ChemicalBook--->CAS DataBase List--->7440-36-0

7440-36-0

7440-36-0 Structure

7440-36-0 Structure
IdentificationMore
[Name]

Antimony
[CAS]

7440-36-0
[Synonyms]

ci77050
Stibium
Antymon
SB000070
SB007906
SB004700
SB000190
SB000140
SB000030
SB000120
SB007902
SB007910
SB000160
SB000300
ANTIMONY
c.i.77050
C.I. 77050
highpurity
Antimony bar
Antimony(Sb)
ANTIMONY, ROD
99.999%, SHOT
antimonyblack
Grey antimony
ANTIMONY SHOT
ANTIMONY METAL
Antimony black
AntiMony power
antimony ingot
Antimony, lump
Pure Tin powder
antymon(polish)
Thermoguard CPA
ANTIMONY POWDER
Antimony Pieces
antimony,regulus
ANTIMONY, 99.99%
ANTIMONY, 99.999%
AntiMony solution
ANTIMONY,METALLIC
ANTIMONY STANDARD
Antimony, regulus
regulusofantimony
ANTIMONYMETAL,LUMP
antimony,elemental
Antimonylumprandom
Antimonypowdermesh
Antimonyrod(99.8%)
AntimonyshotNmmdia
AntimonypowderNmesh
Antimony, Low Oxide
Antimony Shot 1-3 mm
ANTIMONYMETAL,POWDER
antimoineelementaire
ANTIMONY AA STANDARD
Antimony metal 99+ %
ANTIMONY METAL LUMPS
AntiMony shot,1-10MM.
ANTIMONY metal ingots
Antimonyshot(99.999%)
ANTIMONY ICP STANDARD
ANTIMONY LUMPS/POWDER
Antimonybar(99.999+%)
Antimonypowder(99.5%)
AntimonyshotNmmanddown
ANTIMONY 99.0%-99.999%
Antimonyshot(99.9999%)
Antimony, p.a., 0.15 mm
ANTIMONY: 99.999%, SHOT
AntimonyMetalLumps99.5%
Antimony, powder, 98.5%
antimony for high pmjty
ANTIMONY 99.999%, PIECES
Antimony ingots, 99.999%
Antimony(Metal)Powder99%
ANTIMONY, POWDER, 99.999%
ANTIMONY, PIECES, 99.999%
ANTIMONY ICP/DCP STANDARD
Antimony, powder, 0.15 mm
MERCURY 10,000PPM FOR ICP
antimony powder, -100 mesh
antimony powder, -325 mesh
ANTIMONY STANDARD SOLUTION
Antimony solution 1000 ppm
EUGON LT100 BROTH TUBE 9 ML
ANTIMONY (METAL) POWDER 99%
ANTIMONY METAL, HIGH PURITY
AntimonyrodNmmdiaxmmlonggmm
Antimony, shot, 2 mm & down
Antimony solution 10 000 ppm
Antimony Powder < 250 micron
Antimony Shot, 2mm And Down,
Antimony shot, 6 mm, 99.999%
ANTIMONY IMPLANTED IN SILICON
ANTIMONY, SHOT, 1-2MM, 99.999%
ANTIMONY: 99.6%, POWDER, -1 MM
Antimony pieces, ≤10 mm, 99.5%
Antimony, powder, 0.15 mm, 99+%
ANTIMONY, AAS STANDARD SOLUTION
ANTIMONY, 99+%, POWDER, 0.15 MM
Antimony, granulated, extra pure
ANTIMONY AA STANDARD CONCENTRATE
ANTIMONY SINGLE ELEMENT STANDARD
Antimony, lump, random, 99.9999%
ANTIMONY, LUMPS AND POWDER, 99.8%
ANTIMONY METALLO-ORGANIC STANDARD
ANTIMONY PLASMA EMISSION STANDARD
Antimony, shot 2mm & down 99.999%
Silicon phosphide single crystals
ANTIMONY, PLASMA STANDARD SOLUTION
ANTIMONY, POWDER, -100 MESH, 99.5%
ANTIMONY AA SINGLE ELEMENT STANDARD
ANTIMONY ATOMIC ABSORPTION STANDARD
Antimony powder, -200 mesh, 99.999%
Antimony powder, ~325 mesh, 99.99%+
ANTIMONY, SHOT, -4+20 MESH, 99.9998%
ANTIMONY, POWDER, -100 MESH, 99.995%
Antimony Shot, 2mm And Down, 99.999%
ANTIMONY POWDER FOR ANALYSIS PARTICLE
ANTIMONY ATOMIC SPECTROSCOPY STANDARD
Antimony rod, 12.7mm (0.500 in.) dia.
Antimony AA Standard,1000 ppm in HNO3
ANTIMONY, OIL BASED STANDARD SOLUTION
ANTIMONY SINGLE ELEMENT PLASMA STANDARD
ANTIMONY STANDARD SOLUTION TRACEABLE TO
ANTIMONY ICP STANDARD TRACEABLE TO SRM F
antimonyatomicabsorptionstandardsolution
ANTIMONY SINGLE ELEMENT STANDARD ICP-AES
Antimony shot, 1 to 3mm (0.04 to 0.1 in.)
Antimony shot, spherical, 1-5 mm, 99.999%
Antimony, AAS standard solution, Specpure?
ANTIMONY, SHOT, 1-5 MM, LOW OXIDE, 99.999%
Antimony rod, 50mm, diameter 4.7mm, 99.999%
Antimony AAS standard solution, Sb 1000μg/mL
Antimony, plasma standard solution, Specpure?
ANTIMONY PLASMA EMISSION SPECTROSCOPY STANDARD
Antimony powder, -325 mesh, 99.5% (metals basis)
Antimony rod, 10 to 12mm (0.39 to 0.47 in.) dia.
AntiMony powder, -200 Mesh, 99.5% (Metals basis)
Antimony powder, -100 mesh, 99.5% (metals basis)
ANTIMONY METAL POWDER extrapure min 99% -200 mesh
Antimony Oil based standard solution, Sb 1000μg/g
Antimony, Oil based standard solution, Sb 5000μg/g
Antimony, plasma standard solution, Sb 10,000μg/mL
Antimony, Reference Standard Solution, 1000ppm ±1%
ANTIMONY ATOMIC ABSORPTION SINGLE ELEMENT STANDARD
Standard solution for the determination of antimony
AntiMony powder, -100 Mesh, 99.5% trace Metals basis
ANTIMONY, SHOT, 1-5 MM, LOW OXIDE, 99.999% METALS BASIS
Antimony shot, 6mm (0.2in) & down, 99.999% (metals basis)
Antimony shot, 6.35mm (0.25in) & down, 99% (metals basis)
Antimony ingot, dia × length 18-20 mm × 110 mm, 99.99999%
Standard solution for determination of antimony impurities
Antimony rod, 12.7mm (0.50 in.) dia. x 10cm (3.9 in.) long
Antimony, AAS standard solution, Specpure(R), Sb 1000μg/ml
Antimony lump, 1.25cm (0.49in) & down, 99.5% (metals basis)
Antimony pieces, 5mm (0.2in) & down, 99.9999% (metals basis)
Antimony, plasma standard solution, Specpure(R), Sb 1000μg/ml
Antimony, plasma standard solution, Specpure(R), Sb 10,000μg/ml
Antimony, Oil based standard solution, Specpure(R), Sb 1000μg/g
Antimony, Oil based standard solution, Specpure(R), Sb 5000μg/g
ANTIMONY, LUMPS/POWDERANTIMONY, LUMPS/POWDERANTIMONY, LUMPS/POWDER
Antimony lump, polycrystalline, Puratronic, 99.9999% (metals basis)
Antimony lump, polycrystalline, Puratronic(R), 99.9999% (metals basis)
Antimony shot, 1-3mm (0.04-0.1in), Puratronic, 99.9999% (metals basis)
Antimony shot, 1.5-5mm (0.06-0.2in), Puratronic, 99.9999% (metals basis)
Antimony shot, 1-3mm (0.04-0.1in), Puratronic(R), 99.9999% (metals basis)
Antimony shot, 1.5-5mm (0.06-0.2in), Puratronic(R), 99.9999% (metals basis)
Antimony broken rod, 12.7mm (0.50in) dia x various lengths, 99.8% (metals basis)
Antimony shot, spherical, 1-5mm (0.04-0.20in), low oxide, 99.999% (metals basis)
ANTIMONY, 99.999%, PIECESANTIMONY, 99.999%, PIECESANTIMONY, 99.999%, PIECESANTIMONY, 99.999%, PIECES
[EINECS(EC#)]

231-146-5
[Molecular Formula]

Sb
[MDL Number]

MFCD00134030
[Molecular Weight]

121.76
[MOL File]

7440-36-0.mol
Chemical PropertiesBack Directory
[Appearance]

Antimony is a silvery-white, lustrous, hard, brittle metal; scale-like crystals, or dark gray lustrous powder
[Melting point ]

630 °C (lit.)
[Boiling point ]

1635 °C (lit.)
[density ]

6.69 g/mL at 25 °C(lit.)
[Fp ]

1380°C
[storage temp. ]

Store at +15°C to +25°C.
[solubility ]

H2O: soluble
[form ]

powder
[color ]

Silver-gray
[Specific Gravity]

6.684
[Water Solubility ]

INSOLUBLE
[Merck ]

13,698
[Exposure limits]

ACGIH: TWA 2 ppm; STEL 4 ppm
OSHA: TWA 2 ppm(5 mg/m3)
NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)
[History]

Antimony was recognized in compounds by the ancients and was known as a metal at the beginning of the 17th century and possibly much earlier. It is not abundant, but is found in over 100 mineral species. It is sometimes found native, but more frequently as the sulfide, stibnite (Sb2S3); it is also found as antimonides of the heavy metals, and as oxides. It is extracted from the sulfide by roasting to the oxide, which is reduced by salt and scrap iron; from its oxides it is also prepared by reduction with carbon. Two allotropic forms of antimony exist: the normal stable, metallic form, and the amorphous gray form. The so-called explosive antimony is an ill-defined material always containing an appreciable amount of halogen; therefore, it no longer warrants consideration as a separate allotrope. The yellow form, obtained by oxidation of stibine, SbH3, is probably impure, and is not a distinct form. Natural antimony is made of two stable isotopes, 121Sb and 123Sb. Forty-five other radioactive isotopes and isomers are now recognized. Metallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic luster. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes of Sb203. It is a poor conductor of heat and electricity, and has a hardness of 3 to 3.5. Antimony, available commercially with a purity of 99.999 + %, is finding use in semiconductor technology for making infrared detectors, diodes, and Hall-effect devices. Commercial-grade antimony is widely used in alloys with percentages ranging from 1 to 20. It greatly increases the hardness and mechanical strength of lead. Batteries, antifriction alloys, type metal, small arms and tracer bullets, cable sheathing, and minor products use about half the metal produced. Compounds taking up the other half are oxides, sulfides, sodium antimonate, and antimony trichloride. These are used in manufacturing flame-proofing compounds, paints, ceramic enamels, glass, and pottery. Tartar emetic (hydrated potassium antimonyl tartrate) has been used in medicine. Antimony and many of its compounds are toxic. Antimony costs about $1.30/kg for the commercial metal or about $12/g (99.999%).
[CAS DataBase Reference]

7440-36-0(CAS DataBase Reference)
[NIST Chemistry Reference]

Antimony(7440-36-0)
[EPA Substance Registry System]

7440-36-0(EPA Substance)
Hazard InformationBack Directory
[Chemical Properties]

Antimony is a silvery-white metal found in the earth’s crust. It is insoluble in hot or cold water, but soluble in hot concentrated sulfuric acid and hot nitric acid, and reacts with oxidizing acids and halogens (fl uorine, chlorine, or bromine). It does not react with water at room temperature, but will ignite and burn in air at higher temperatures. Ores of antimony are mined and later mixed with other metals to form antimony alloys, which are used in lead storage batteries, solder, sheet and pipe metal, bearings, castings, and pewter. Antimony oxide is added to textiles and plastics to prevent them from catching fi re. It is also used in paints, ceramics, and fi reworks, and as enamels for plastics, metal, and glass. Antimony is alloyed with other metals, such as lead, to increase its hardness and strength; its primary use is in antimonial lead, which is used in grid metal for lead acid storage batteries. Antimony salts are used in the treatment of leishmaniasis and schistosomiasis.
[General Description]

A silvery or gray solid in the form of dust. Denser than water and insoluble in water. Toxic by inhalation and by ingestion. May burn and emit toxic fumes if heated or exposed to flames. Used to make electric storage batteries and semiconductors.
[Reactivity Profile]

ANTIMONY is spontaneously flammable in fluorine, chlorine, and bromine. With iodine, the reaction produces heat, which can cause flame or even an explosion if the quantities are great enough [Mellor 9:379 1946-47]. Even at 10° C. bromine trifluoride reacts with antimony incandescently. Bromine trifluoride reacts similarly with arsenic, boron, bromine, iodine, phosphorus, and sulfur [Mellor 2:113 1946-47]. Bromoazide explodes on contact with antimony, arsenic, phosphorus, silver foil, or sodium. ANTIMONY POWDER(7440-36-0) is very shock sensitive. Explosions of chloric acid have been due to the formation of unstable compounds with antimony, bismuth, ammonia, and organic matter [Chem. Abst. 46:2805e 1952]. The reaction of finely divided antimony and nitric acid can be violent [Pascal 10:504 1931-34]. Powdered antimony mixed with potassium nitrate explodes when heated [Mellor 9:282 1946-47]. When antimony or arsenic and solid potassium permanganate are ground together, the metals ignite [Mellor 12:322 1946-47]. Sodium peroxide oxidizes antimony, arsenic, copper, potassium, tin, and zinc with incandescence [Mellor 2:490-93 1946-47].
[Air & Water Reactions]

Insoluble in water.
[Hazard]

Use with adequate ventilation. Soluble salts are toxic.
[Health Hazard]

Oxides from metallic fires are a severe health hazard. Inhalation or contact with substance or decomposition products may cause severe injury or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.
[Health Hazard]

The toxicity of antimony compounds is comparable to that of arsenic, but as antimony compounds are hardly absorbed in the gastrointestinal tract, there is less hazard of acute poisoning. In addition, antimony compounds often cause vomiting, thus being removed from the organism. Chronic poisoning may result in damage to the liver, kidneys, and even the heart and the circulatory system. The symptoms differ among the compounds. Stibine accumulates in fatty tissue. Exposures to antimony and its compounds cause poisoning and toxicity to the worker with symptoms that include, but are not limited to, irritation to eyes, skin, nose, and throat, ulceration of nasal septum and larynx, dermatitis as characterized by antimony spots, cough, dizziness, seizures, headache, anorexia, nausea, vomiting, diarrhea, stomach cramps, bloody stools, insomnia, inability to smell properly, metallic taste, cardiovascular disturbances, pulmonary edema, pharyngitis, tracheitis, heart and lung damage, pneumoconiosis, slow and shallow respiration, coma, and death. Antimony fumes and dusts inhaled by occupational workers are associated with the development of benign tumors of the lungs, dermatitis and, less commonly, effects on the heart and kidneys. Laboratory animals exposed to antimony by inhalation or ingestion exhibit effects similar to those noted in humans. Antimony can be measured in the urine, feces, and blood. To date, little is known about the environmental risks involved. Water pollution seldom occurs because of the low solubility of most compounds. Extreme caution should be taken when coming into direct contact with antimony compounds.
[Potential Exposure]

Exposure to antimony may occur during mining, smelting or refining; alloy and abrasive manufacture; and typesetting in printing. Antimony is widely used in the production of alloys, imparting increased hardness, mechanical strength, corrosion resistance, and a low coefficient of friction. Some of the important alloys are Babbitt, pewter, white metal, Britannia metal and bearing metal (which are used in bearing shells), printing-type, metal, storage battery plates, cable sheathing, solder, ornamental castings, and ammunition. Pure antimony compounds are used as abrasives, pigments, flame-proofing compounds, plasticizers, and catalysts in organic synthesis; they are also used in the manufacture of tartar emetic, paints, lacquers, glass, pottery, enamels, glazes, pharmaceuticals, pyrotechnics, matches, and explosives. In addition, they are used in dyeing, for blueing steel; and in coloring aluminum pewter; and zinc. A highly toxic gas, stibine, may be released from the metal under certain conditions.
[Fire Hazard]

May react violently or explosively on contact with water. Some are transported in flammable liquids. May be ignited by friction, heat, sparks or flames. Some of these materials will burn with intense heat. Dusts or fumes may form explosive mixtures in air. Containers may explode when heated. May re-ignite after fire is extinguished.
[First aid]

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.
[Shipping]

UN2871 Antimony powder, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
[Incompatibilities]

Pyrophoric. Finely dispersed powder may form explosive mixture in air. Strong oxidizers; strong acids , produce a violent reaction, and deadly stibine gas (antimony hydride). Heat forms stibine gas. Mixtures with nitrates or halogenated compounds may cause combustion. Forms an explosive mixture with chloric and perchloric acid. Note: Stibine is formed when antimony is exposed to nascent (freshly formed) hydrogen.
[Waste Disposal]

Recovery and recycling is an option to disposal which should be considered for scrap antimony and spent catalysts containing antimony. Dissolve spilled material in minimum amount of concentrated HCl. Add water, until white precipitate appears. Then acidify to dissolve again. Saturate with H2S. Filter, wash and dry the precipitate and return to supplier. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.
[Physical properties]

Physically, antimony’s properties are related to sulfur and some of the nonmetals, butchemically, its properties are related to metals. It behaves like a metal and is often found innature along with other metals. In its pure form it is rather hard and brittle with a grayishcrystal structure.
[Isotopes]

There are 53 isotopes of antimony. They range from Sb-103 to Sb-139 (a fewhave two forms). Their half-lives range from 150 nanoseconds to 2.7 years. The twostable isotopes of antimony and their contribution to the natural abundance of antimonyon Earth are as follows: Sb-121 = 57.21% and Sb-123 = 42.79%.
[Origin of Name]

The element’s name comes from the Greek words anti and minos, which mean “not alone,” and antimony’s symbol (Sb) is derived from the name for its ancient source mineral, stibnium.
[Occurrence]

Although antimony is not a rare metal, it is not well known, despite having been knownand used for many centuries. It is the 63rd most abundant element on Earth, and it occursmainly as sulfide ores or in combination with the ores of other metals. The ore that is theprimary source of antimony is the mineral stibnite (antimony sulfide, Sb2S3). Antimony is alsofound in copper, silver, and lead ores. Breithauptite (NiSb) and ullmanite (NiSbS) are twoores containing nickel. Dicrasite (Ag2Sb) and pyrargyrite (Ag3SbS3) are silver ores containingsome antimony.
[Characteristics]

There are two allotropes of antimony. The native metallic form is one allotrope, and theother allotrope is an amorphous grayish form. Antimony is a true metalloid that is brittle witha low melting point. And similar to nonmetals, it is a poor conductor of heat and electricity.
Antimony is unique in that when it solidifies from a molten liquid state to a solid state, itexpands, which is just the opposite of most metals. This is useful in making some typesettingcastings in which the expansion assures an accurate reproduction of the letter mold.
[Application]

It is important as wire materials of the thermocouples for spectroscopic measurements. The alloy with other metal is used because the material is fragile.
[Definition]

antimony: Symbol Sb. An elementbelonging to group 15 (formerly VB)of the periodic table; a.n. 51; r.a.m.121.75; r.d. 6.68; m.p. 630.5°C; b.p.1750°C. Antimony has several allotropes.The stable form is a bluishwhitemetal. Yellow antimony andblack antimony are unstable nonmetallicallotropes made at low temperatures.The main source isstibnite (Sb2S3), from which antimonyis extracted by reduction withiron metal or by roasting (to give theoxide) followed by reduction withcarbon and sodium carbonate. Themain use of the metal is as an alloyingagent in lead-accumulator plates,type metals, bearing alloys, solders,Britannia metal, and pewter. It is alsoan agent for producing pearlitic castiron. Its compounds are used inflame-proofing, paints, ceramics,enamels, glass dyestuffs, and rubbertechnology. The element will burn inair but is unaffected by water or diluteacids. It is attacked by oxidizingacids and by halogens. It was first reportedby Tholden in 1450.
[Pharmaceutical Applications]

Antimony presents itself in a metallic grey form. Antimony is obtained from stibnite (Sb2S3) after reduction with iron.
[Industrial uses]

Antimony is a bluish-white metal, symbol Sb,with a crystalline scalelike structure that exhibitspoor electrical and heat conductivity. It isbrittle and easily reduced to powder. It is neithermalleable nor ductile and is used only in alloysor in its chemical compounds. Like arsenic andbismuth, it is sometimes referred to as a metalloid,but in mineralogy it is called a semimetal.The element is available commercially in99.999+% purity and is finding increasing usein semiconductor technology.
Antimony is produced either by roasting thesulfide with iron, or by roasting the sulfide andreducing the sublimate of Sb4O6 thus producedwith carbon; high-purity antimony is producedby electrolytic refining. Antimony is one of thefew elements that exhibits the unique propertyof expanding on solidification. Antimony isordinarily stable and not readily attacked by airor moisture. Under controlled conditions it willreact with O2 to form oxides. The chief uses ofantimony are in alloys, particularly for hardeninglead-base alloys.
Antimony imparts hardness and a smoothsurface to soft-metal alloys, and alloys containingantimony expand on cooling, thus reproducingthe fine details of the mold. This propertymakes it valuable for type metals. When alloyedwith lead, tin, and copper, it forms the babbittmetals used for machinery bearings. It is alsomuch used in white alloys for pewter utensils.Its compounds are used widely for pigments.
[Carcinogenicity]

Existing experimental data suggest that antimony may be an animal carcinogen, but there is lack of data on the possible carcinogenic properties of antimony and antimony compounds for human exposures. The ACGIH refers to unpublished data on a large antimony smelter in the United Kingdom in the 1960s where workers were exposed to antimony trioxide ranging from 0.5 to 40mg/m3. The data may indicate increased mortality in lung cancer among the heavily exposed workers, but the workers were also exposed to zirconium making the data cited dif?cult to interpret.
[Environmental Fate]

The toxicity of Sb is a function of the water solubility and the oxidation state of the Sb species under consideration. Antimony( III) is generallymore toxic than antimony(V) and inorganic forms are thought to be more toxic than organic forms. Stibane gas (SbH3) when inhaled is the most toxic. Antimony toxicity often parallels that of arsenic, although antimony salts are less readily absorbed than arsenic. It is presumed that antimony, like arsenic, complexes with sulfhydryl groups of essential enzymes and other proteins. By analogy, antimony can uncouple oxidative phosphorylation, which would inhibit the production of energy necessary for cellular functions. Antimony’s trivalent compounds are more toxic than its pentavalent compounds.
[storage]

Color Code—Blue: Health Hazard/Poison: Store ina secure poison location. Prior to working with this chemicalyou should be trained on its proper handling and storage.Store in tightly closed containers in a cool, well-ventilatedarea away from oxidizers, halogens, strong acids, and heat.Sources of ignition, such as smoking and open flames, areprohibited where this chemical is used, handled, or stored ina manner that could create a potential fire or explosion hazard. Contact with acids forms deadly stibine gas. Beforeentering confined space where this chemical may be present,check to make sure that an explosive concentration does notexist.
[Structure and conformation]

The space lattice of most stable metallic antimony (often called gray antimony) belongs to the hexagonal system, and its arsenic type structure (two atoms within a unit cell) has a lattice constant of a=0.449762 nm, a=57°6.6', u=0.233. Black antimony and yellow antimony are known, but these are unstable and transform to metallic antimony
[Toxicity evaluation]

Antimony is found naturally in the Earth’s crust and can be released into the environment as windblown dust or sea spray or from volcanic eruptions or forest fires. However, the emission of antimony into the environment is overwhelmingly the result of human activity, with the emission of antimony trioxide, tetroxide, and pentoxide forms being the most significant. Antimony trioxide is emitted as a result of coal burning, or with fly ash when antimony-containing ores are smelted. Humans are exposed to low amounts of antimony from the air, drinking water, and food contaminated with soil. Antimony concentration in the atmosphere is thought to be 1.4–55 ng m-3. The more water soluble forms of antimony are very mobile in aqueous media while the less soluble forms of antimony are found attached to particles of soil, clay, and sediment in rivers and lakes. The concentration of antimony in the Pacific Ocean was found to be 0.2 mg l-1 and in the Rhine river at 0.1 μg l-1. The trivalent state of antimony is the form most often released by anthropogenic activities. In terms of soil concentrations, it was reported by a US Geological Survey to be less than 1–8 ppm in soil, with an average of 0.48 ppm. Studies have estimated an exposure of less than 5 mg day1 on average from food and water and appears to be significantly higher than exposure by inhalation.
Safety DataBack Directory
[Hazard Codes ]

N,Xn,Xi
[Risk Statements ]

R34:Causes burns.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R20/22:Harmful by inhalation and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .
R36/38:Irritating to eyes and skin .
[Safety Statements ]

S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
[RIDADR ]

UN 3264 8/PG 2
[WGK Germany ]

2
[RTECS ]

CC4025000
[TSCA ]

Yes
[HazardClass ]

6.1
[PackingGroup ]

III
[HS Code ]

81101000
[Precautions]

Antimony trioxide is incompatible with bromine trifl uoride, strong acids, strong bases, reducing agents, perchloric acid, and chlorinated rubber. The release of the deadly gas, stibine, and its inhalation cause adverse effects on the respiratory, gastrointestinal, and cardiovascular systems. Workers must wear impervious protective clothing, including boots, gloves, laboratory coat, apron or coveralls, as appropriate, to prevent skin contact.
[Safety Profile]

An experimental poison by intraperitoneal route. Questionable carcinogen with experimental carcinogenic data. Moderate fire and explosion hazard in the forms of dust and vapor when exposed to heat or flame. See also POWDERED METALS. When heated or on contact with acid it emits toxic fumes of SbH3. Electrolysis of acid sulfides and stirred Sb halide yields explosive Sb. It can react violently with NH4NO3, halogens, BrN3, BrF3, HClO3, Cl0, ClF3, HNO3, m03, KMn04, K2O2, NaNO3, oxidants.
[Hazardous Substances Data]

7440-36-0(Hazardous Substances Data)
[Toxicity]

LD50 in rats, guinea pigs (mg Sb/100 g): 10.0, 15.0 i.p. (Bradley, Fredrick)
[IDLA]

50 mg Sb/m3
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Diantimony trioxide-->ANTIMONY(V) CHLORIDE-->Antimony trichloride
[Preparation Products]

Diantimony trioxide-->Tetrachlorosilane-->ANTIMONY(V) CHLORIDE-->1,4-Dichlorobenzene-->Sodium antimonate-->ANTIMONY(III) SULFIDE-->N-BUTYLMAGNESIUM BROMIDE
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

antimony powder(7440-36-0).msds
Questions And AnswerBack Directory
[Description]

Antimony occurs in nature primarily in the mineral stibnite, and also in several other ores, such as valentinite, senarmontite, cervantite, kermasite, livingstonite, and jamisonite. It is also found in lead scraps from batteries.
Antimony alloys have many commercial applications. The metal makes its alloys hard and stiff and imparts resistance to corrosion. Such alloys are used in battery grids and parts, tank linings, pipes and pumps. The lead plates in the lead storage batteries constitute 94% lead and 6% antimony. Babbit metal, an alloy of antimony, tin, and copper is used to make antifriction machine bearings. Alloys made from very high purity grade antimony with indium, gallium and bismuth are used as infrared detectors, diodes, hall effect devices and thermoelectric coolers.
[Chemical Properties]

A natural element, antimony (symbol Sb; CASRN 7440-36-0) occurs in valence states of 3, 5, and -3 and has both metallic and nonmetallic properties. It is commercially available as a silver white lustrous solid metal or a dark gray powder (HSDB, 2005; Budavari, 1989). The amount in the earth’s crust is <1 parts per million (ppm); its most common ore is stibnite (CASRN 1345-04-6). Antimony trisulfide (symbol Sb2S3; CASRN 1317-86-8), is a chemical form of antimony (Beliles, 1979). In the soils of the conterminous United States, it occurs at a geometrical mean of 0.48 ppm (Shacklett and Boerngen, 1984).
antimony
Because antimony is a group VA element, it has many of the same chemical and toxicological properties as arsenic and lead. For example, the toxicity of pentavalent antimony compounds is less than that of trivalent compounds (DeWolff and Edelbroek, 1994). The suggested descending order of toxicity is metalloid antimony (particularly stibine gas), the trisulfide, the pentasulfide, the trioxide, and the pentoxide.
[History]

Antimony has been an important mineral through much of human history. For example, the ancient Egyptians and early Hindus used stibnite (Sb2S3), which is the major ore mineral for antimony, to produce black eye makeup as early as about 3100 B.C. Medieval alchemists thought that antimony could be used to convert lead into gold. Today, antimony is used in lead-acid storage batteries for backup power and transportation; in chemicals, ceramics, and glass; in flameretardant materials; and in heat stabilizers and plastics.
[Uses]

Antimony's leading use is as a fire retardant in safety equipment and in household goods, such as mattresses.
Antimony has more uses of a direct military character than other members of the strategic group and probably more important uses than any of the others except mercury.Antimony is a hardening agent in metals used in ball bearings, bullets capable of penetrating armor plate, and lead shot. It helps to strengthen cable sheaths, chemical pumps, foils, plumbing fixtures and pipes, roofing sheets, and tank linings. During World War II, the fireproofing compound antimony trichloride (SbCl3) saved the lives of many American troops when it was applied to tents and vehicle covers. In a fire, antimony and chlorine recombine to form unstable compounds that remove oxygen from the air, smothering the flames (Gibson, 1998; Eyi, 2012).
[Production Methods]

Antimony is obtained from its ores, stibnite, Sb2S3 or tetrahedrite, 3Cu2S . Sb2S3. The metal is recovered from high-grade stibnite by reduction with iron:
Sb2S3 + 3 Fe → 2 Sb + 3 FeS
Alternatively, low-grade stibnite ore is converted to its oxide which is then reduced with carbon. Tetrahedrite may be treated with sodium sulfide solution. The solution containing thioantimonate formed is then electrolyzed in a diaphragm cell using a steel cathode and lead anode. The metal is further refined by oxidation or electrorefining process.
Sb may be made in the laboratory by reduction of antimony pentoxide with potassium cyanide.
[Reduction from Oxides]

The oxides from volatilizing roasting, as well as other oxidized antimony materials, are reduced to the metal with carbonaceous materials. Occasionally oxide ores containing more than 50 % antimony are finely ground and also reduced. Sometimes the oxide must be treated beforehand to remove arsenic, but improved roasting techniques frequently make this unnecessary. The amount of carbon required for reduction depends on the composition of the oxide, ranging between 8 and 12 %. Pulverized charcoal, anthracite dust, or lean coke breeze are used.
Smelting of antimony oxide flue dust containing arsenic, such as is obtained by roasting ores, with sodium hydroxide produces metallic antimony.
2 Sb2O3 + 3 As2O3 + 18 NaOH→4 Sb+6 Na3AsO4+9 H2O
The oxides are reduced in shaft, reverberatory, or short rotary furnaces. All types of furnaces require efficient precipitators and off-gas filters to remove volatilized antimony(III) oxide.
[Antimony and Antimony Compounds]

Antimony compounds
[Hydrometallurgical Methods]

Antimony ores can be digested by alkalies. The mechanochemical leaching of antimony from Slovakian tetrahedrite concentrate in an attritor and the chemical leaching of the resulting solid residues were studied. The results indicate that recoveries of 52 – 100 % Sb, 60 – 85 % Hg and 50 – 96 % Ag can be achieved by using alkaline solutions of Na2S for leaching of Sb and Hg. The dissolution of Sb from a Columbian stibnite concentrate in basic solutions of Na2S·9H2O and NaOH gave a maximum Sb extraction of 94 % from a concentrate containing 30 % Sb with a mixture of 12.5% Na2S and 4.0 % NaOH.
[Electrolysis Methods]

The antimony is recovered from the alkaline solution by electrolysis. The steps are as follows:
1) The antimony is batch leached with hot concentrated sodium sulfide solution from milled tetrahedrite concentrate to give a solution containing about 250 g Na2S and 50 g Sb per liter. The leaching time is 8 – 10 h at 100 – 103 ℃.
2) After the residue settles, the supernatant solution is decanted. The residue is recovered by two-stage filtration with a repulping step between the stages. The pregnant solution is fed to the electrolytic section through two anolyte and two catholyte tanks.
3) The solution is batch electrolyzed in banks of diaphragm cells. The antimony is deposited at mild-steel cathodes. The electrolytic section consists of 96 cells in series, arranged in cascades of six.
electrolysis methods
[Toxicokinetics]

Most antimony compounds, mainly those with poor water solubility, are absorbed only slowly from the gastrointestinal tract. Trivalent compounds especially tend to accumulate in the human body, because they are excreted very slowly via urine and feces. Antimony and its compounds react readily with mercapto groups in various cellular constituents, especially in enzymes, blocking their activity. After acute and chronic intoxications, the highest levels of antimony were found in lungs, liver and kidneys.
Tags:7440-36-0 Related Product Information
158861-67-7 1119-46-6 126-00-1 10025-91-9 17754-90-4 10191-41-0 433-97-6 28300-74-5 1309-64-4 7440-36-0 1345-04-6 7783-56-4 1314-60-9 7783-70-2 603-36-1