ChemicalBook
Chinese Japanese Germany

Phosphoric acid

Phosphoric acid
Phosphoric acid
CAS No.
7664-38-2
Chemical Name:
Phosphoric acid
Synonyms
NFB;H3PO4;EVITs;Sonac;Marphos;U.N. 1805;FEMA 2900;PHOS ACID;Phosphoric;wc-reiniger
CBNumber:
CB3854273
Molecular Formula:
H3O4P
Formula Weight:
98
MOL File:
7664-38-2.mol

Phosphoric acid Properties

Melting point:
~40 °C(lit.)
Boiling point:
158 °C(lit.)
Density 
1.685 g/mL at 25 °C(lit.)
vapor density 
3.4 (vs air)
vapor pressure 
2.2 mm Hg ( 20 °C)
refractive index 
n20/D 1.433
FEMA 
2900 | PHOSPHORIC ACID
storage temp. 
Store below +30°C.
solubility 
H2O: soluble
pka
2.1-7.2-12.3(at 25℃)
form 
Solid or Viscous Liquid
color 
≤10(APHA)
Specific Gravity
1.7
PH
<0.5 (100g/l, H2O, 20℃)
Water Solubility 
MISCIBLE
λmax
λ: 260 nm Amax: ≤0.05
λ: 280 nm Amax: ≤0.04
Merck 
14,7344
BRN 
1921286
CAS DataBase Reference
7664-38-2(CAS DataBase Reference)
NIST Chemistry Reference
Phosphoric acid(7664-38-2)
EPA Substance Registry System
Phosphoric acid(7664-38-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  C,Xn,T,F
Risk Statements  34-35-22-39/23/24/25-36/38-23/24/25-11
Safety Statements  7-16-26-36/37-45-36/37/39-1/2-24/25
RIDADR  UN 3453 8/PG 3
WGK Germany  3
RTECS  TB6300000
3-10
TSCA  Yes
HS Code  2809 20 00
HazardClass  8
PackingGroup  III
Hazardous Substances Data 7664-38-2(Hazardous Substances Data)
Toxicity ADI 0 to 70 mg / kg (total phosphate content in terms of phosphorus, FAO / WHO, 2001).
GRAS (FDA, § 182.1073, 2000).
LD501530mg / kg (rat, oral).
In case of daily intake of 2 ~ 4 g, it can cause mild diarrhea. The amount of sour agent used as a cola drink is 0.02% to 0.06%.
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Phosphoric acid price More Price(50)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 03366 Phosphate atomic spectroscopy standard concentrate 1.00 g PO43- 1.00 g/L, for 1L standard solution, analytical standard 7664-38-2 1ea $31.9 2018-11-13 Buy
Sigma-Aldrich 04107 Phosphoric acid puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, 85.0-88.0% 7664-38-2 6x1l $410 2018-11-13 Buy
Alfa Aesar 033266 Phosphoric acid, 85% w/w aq. soln., ACS 7664-38-2 1kg $41.1 2018-11-16 Buy
Alfa Aesar 033266 Phosphoric acid, 85% w/w aq. soln., ACS 7664-38-2 *4x1kg $111 2018-11-16 Buy
Strem Chemicals 93-1541 Phosphoric acid (ACS), 85% 7664-38-2 1kg $52 2018-11-13 Buy

Phosphoric acid Chemical Properties,Uses,Production

Description

Phosphoric acid was prepared first by Robert Boyle in 1694 by dissolving phosphorus pentoxide in water. Phosphoric acid is probably the most important compound of phosphorus. It is the second largest inorganic chemical by volume, after sulfuric acid, marketed in the United States.
The single most important application of Phosphoric acid is manufacturing phosphate salts for fertilizers. Such fertilizer phosphates include sodium, calcium, ammonium, and potassium phosphates. Other applications are in metal pickling and surface treatment for removal of metal oxides from metal surfaces; electropolishing of aluminum; as a bonding agent in various refractory products such as alumina and magnesia; as a catalyst in making nylon and gasoline; as a dehydrating agent; in fireproofing wood and fabrics; in lithographic engraving; in textile dyeing; in dental cement; in coagulating rubber latex; in purifying hydrogen peroxide; and as a laboratory reagent. Dilute solutions of phosphoric acid are used as additives to carbonated beverages for a pleasing sour taste. Also, dilute acid is used in refining sugar; as a nutrient; and as a buffering agent in preparing jam, jelly, and antibiotics. The commercial phosphoric acid is 85% (w/w) in strength.

Chemical Properties

Phosphoric acid is a colourless, odourless chemical substance.
Phosphoric acid on combustion forms toxic fumes (phosphorous oxides) and decomposes on contact with alcohols, aldehydes, cyanides, ketones, phenols, esters, sulphides, and halogenated organics producing toxic fumes. It violently polymerises under the influence of azo compounds and epoxides attacks many metals forming flammable/explosive gas. Phosphoric acid violently polymerises under the influence of azo compounds and epoxides, reacting violently with bases. It has wide-scale application in industries, in the manufacture of superphosphates for fertilisers, phosphate salts, polyphosphates, and detergents, as a catalyst in ethylene manufacture and hydrogen peroxide purification as a flavour, acidulant, synergistic anti-oxidant, and sequestrant in food. In dental cements, in process engraving, metal rustproofing, latex coagulation, analytical reagent, and as a veterinary product in the treatment of lead poisoning. Food-grade phosphoric acid is used to acidify foods and beverages. It provides a tangy or sour taste and, being a mass-produced chemical, is available cheaply and in large quantities. Phosphoric acid, used in many soft drinks, has been linked to lower bone density in epidemiological studies. In brief, phosphoric acid is a strong acid and common industrial chemical used in the manufacture of a wide number of products, notably porcelain and metal cleaners, detergents, and fertilisers. It is also used as a food additive and is a major constituent of many soft drinks. Low phosphate concentrations are found in drinking water to which it is added in some areas in order to reduce lead solubility.

Chemical Properties

Phosphoric acid is a colorless, odorless, crystalline solid or a thick syrupy liquid. Physical state is strength and temperature dependent.

Chemical Properties

Concentrated phosphoric acid occurs as a colorless, odorless, syrupy liquid.

Uses

Phosphoric Acid is an acidulant that is an inorganic acid produced by burning phosphorus in an excess of air, producing phosphorus pentoxide which is dissolved in water to form orthophosphoric acid of varying concentrations. it is a strong acid which is soluble in water. the acid salts are termed phosphates. it is used as a flavoring acid in cola and root beer beverages to provide desirable acidity and sourness. it is used as a synergistic antioxidant in vegetable shorten- ings. in yeast manufacture, it is used to maintain the acidic ph and provide a source for phosphorus. it also functions as an acidulant in cheese. it is also termed orthophosphoric acid.

Uses

phosphoric acid is a preservative and an anti-oxidant. It is irritating to the skin in concentrated solutions.

Uses

Phosphorous acid is used for reaction with inorganic and organic products, for water treatment, industrial and agricultural uses. It is also used to bleach industrial and cleaning supplies. Contact

Definition

ChEBI: A phosphorus oxoacid that consits of one oxo and three hydroxy groups joined covalently to a central phosphorus atom.

Preparation

Low-purity technical grade phosphoric acid for use in fertilizers is produced from phosphate rocks by digestion with concentrated sulfuric acid. The apatite types, primarily consisting of calcium phosphate phosphate rocks, are used: Ca3(PO4)2 + 3H2SO4 + 6H2O → 2H3PO4 + 3(CaSO4•2H2O)
The insoluble calcium sulfate slurry is filtered out. Acid from this wet process is impure but can be purified by various methods. Purification steps involve precipitation, solvent extraction, crystallization, and ion exchange techniques.
Phosphoric acid also can be made by many different methods. Dissolution of phosphorus pentoxide in water and boiling yields phosphoric acid. Pure phosphoric acid can be obtained by burning phosphorus in a mixture of air and steam:
P4 (l) + 5O2 (g) →P4O10 (s)
P4O10 (s) + H2O (g) → 4H3PO4 (l)
The acid also may be prepared by heating violet phosphorus with 33% nitric acid:
4P + 10HNO3 + H2O → 4H3PO4 + 5NO ↑ + 5NO2 ↑
or by heating red phosphorus with nitric acid (1:1). The overall equation is:
P + 3HNO3 → H3PO4 + NO + 2NO2

Uses

In the manufacture of superphosphates for fertilizers, other phosphate salts, polyphosphates, detergents. Acid catalyst in making ethylene, purifying hydrogen peroxide. As acidulant and flavor, synergistic antioxidant and sequestrant in food. Pharmaceutic aid (solvent). In dental cements; process engraving; rustproofing of metals before painting; coagulating rubber latex; as analytical reagent.

Production Methods

The majority of phosphoric acid is made by digesting phosphate rock (essentially tricalcium phosphate) with sulfuric acid; the phosphoric acid is then separated by slurry filtration. Purification is achieved via chemical precipitation, solvent extraction, crystallization, or ion exchange.

brand name

Pharmaceutic aid (solvent).

General Description

A clear colorless liquid or transparent crystalline solid. The pure solid melts at 42.35°C and has a density of 1.834 g / cm3. Liquid is usually an 85% aqueous solution. Shipped as both a solid and liquid. Corrosive to metals and tissue. Used in making fertilizers and detergents and in food processing.

Air & Water Reactions

Soluble in water with small release of heat.

Reactivity Profile

Phosphorous acid reacts exothermically with bases. May react with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain classes of organic compounds. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Forms explosive mixture with nitromethane. Reacts violently with sodium tetrahydroborate. In the presence of chlorides can corrode stainless steel to form explosive hydrogen gas. Emits toxic and irritating fumes of oxides of phosphorus when heated to decomposition [Lewis, 3rd ed., 1993, p. 1029].

Health Hazard

Burns on mouth and lips, sour acrid taste, severe gastrointestinal irritation, nausea, vomiting, bloody diarrhea, difficult swallowing, severe abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, shock, death.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Agricultural Uses

Orthophosphoric acid is obtained by reacting phosphorus pentoxide with water or by reacting rock phosphate with concentrated sulphuric acid. Salts of ammonium,calcium or potassium with this acid are called orthophosphates, and these are used as fertilizers. Nearly 80% of the phosphorus pentoxide in fertilizers is derived from orthophosphoric acid. Commercial phosphates based on orthophosphoric acid, also known as phosphoric acid, are triple superphosphate, ammonium phosphate, ammonium polyphosphate, nitrophosphate, orthophosphate fertilizer and liquid fertilizers.

Agricultural Uses

Phosphoric acid (H3PO4), also known as orthophosphoric acid, is the most significant source of phosphate fertilizers. Phosphoric acid based fertilizers mainly include ammonium phosphate, diammonium phosphate and monoammonium phosphate.
Phosphoric acid is deliquescent and commercially the most important derivative of phosphorus, accounting for over 90% of the phosphate rock mined. The white rhombic solid is highly soluble in water and ethanol, and the concentrated aqueous solution is generally available for use.
Phosphoric acid is used in several industries other than the fertilizer industry. Most elemental phosphorus is converted into phosphoric acid for non-fertilizer use. There are two basic processes for the production of phosphoric acid.
Metaphosphoric acid is obtained by heating phosphoric acid until dense white fumes begin to appear. The product is highly deliquescent and glassy in appearance. Its salts are known as metaphosphates. Orthophosphoric acid is the most common and is used as an important phosphate ingredient in commercial fertilizers.

Pharmaceutical Applications

Phosphoric acid is widely used as an acidifying agent in a variety of pharmaceutical formulations. It is used in pharmaceutical products as part of a buffer system when combined with a phosphate salt such as sodium phosphate, monobasic or dibasic. It is also widely used in food preparations as an acidulant, flavor, and synergistic antioxidant (0.001–0.005%) and sequestrant.
Therapeutically, dilute phosphoric acid has been used welldiluted in preparations used in the treatment of nausea and vomiting. Phosphoric acid 35% gel has also been used to etch tooth enamel and to enhance delivery of drugs through the nail.
) Nanosized hydroxyapatite powder was made by combining phosphoric acid with egg shells.

Safety Profile

Human poison by ingestion. Moderately toxic by skin contact. A corrosive irritant to eyes, skin, and mucous membranes, and a systemic irritant by inhalation. A common air contaminant. A strong acid. Mixtures with nitromethane are explosive. Reacts with chlorides + stainless steel to form explosive hydrogen gas. Potentially violent reaction with solum tetrahydroborate. Dangerous; when heated to decomposition it emits toxic fumes of POx

Safety

In the concentrated form, phosphoric acid is an extremely corrosive and harmful acid. However, when used in pharmaceutical formulations it is usually very diluted and is generally regarded as an essentially nontoxic and nonirritant material.
The lowest lethal oral dose of concentrated phosphoric acid in humans is reported to be 1286 mL/kg.
(rabbit, skin): 2.74 g/kg
(rat, oral): 1.53 g/kg

Potential Exposure

Phosphoric acid is used in the manufacture of fertilizers, phosphate salts; polyphosphates, detergents, activated carbon; animal feed; ceramics, dental cement; pharmaceuticals, soft drinks; gelatin, rust inhibitors; wax, and rubber latex. Exposure may also occur during electropolishing, engraving, photoengraving, lithographing, metal cleaning; sugar refining; and water-treating.

First aid

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 2448 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.

storage

When stored at a low temperature, phosphoric acid may solidify, forming a mass of colorless crystals, comprising the hemihydrate, which melts at 28°C. Phosphoric acid should be stored in an airtight container in a cool, dry place. Stainless steel containers may be used.

Shipping

UN1805 Phosphoric acid solution, Hazard class: 8; Labels: 8-Corrosive material. UN3543 Phosphoric acid solid, Hazard class: 8; Labels: 8-Corrosive material.

Incompatibilities

The substance is a medium strong acid. Incompatible with strong caustics; most metals. Readily attacks and reacts with metals forming flammable hydrogen gas. Do not mix with solutions containing bleach or ammonia. Violently polymerizes on contact with azo compounds; epoxides, and other polymerizable compounds. Decomposes on contact with metals, alcohols, aldehydes, cyanides, ketones, phenols, esters, sulfides, halogenated organics; producing toxic fumes. Corrosive to common metals and possibly to some rubbers and plastics.

Incompatibilities

Phosphoric acid is a strong acid and reacts with alkaline substances. Mixtures with nitromethane are explosive.

Waste Disposal

Add slowly to solution of soda ash and slaked lime with stirring, then flush to sewer with large volumes of water.

Regulatory Status

GRAS listed. Accepted as a food additive in Europe. Included in the FDA Inactive Ingredients Database (infusions, injections, oral solutions, topical creams, lotions, ointments and solutions, and vaginal preparations). Included in nonparenteral and parenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Phosphoric acid Preparation Products And Raw materials

Raw materials

Preparation Products


Phosphoric acid Suppliers

Global( 400)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hebei Guanlang Biotechnology Co., Ltd.
+86-0311-66562153 whatsapp +8615203118427
+86-0311-66562153 sales@crovellbio.com CHINA 416 50
Hangzhou Bayee Chemical Co., Ltd.
0086-571-86990109; 0086-18605816692
0086-571-85775919 rachelhoo@bayeechem.com China 98 55
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32651 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1659 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 19990 58
Shanghai Macklin Biochemical Co.,Ltd. 15221275939
021-51821727 shenlinxing@macklin.cn China 15820 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 sale@aladdin-e.com China 25106 65
Shanghai neon biological technology co., LTD 021-54252912-8903
leona.xin@forneeds.cn China 4819 58
Jiangsu Bohan Industry and Trade Co., Ltd. 13605157325
lzw_199901@hotmail.com CHINA 11 58

View Lastest Price from Phosphoric acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-19 Phosphoric acid
7664-38-2
US $1.00 / kg 1kg AR,85 wt. % in H2O 1000kg career henan chemical co
2018-08-09 Phosphoric acid
7664-38-2
US $10.00 / KG 10G 99% 10MT per month Hebei Guanlang Biotechnology Co., Ltd.

7664-38-2(Phosphoric acid)Related Search:


Copyright 2017 © ChemicalBook. All rights reserved