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Boron tribromide

General Description Physical and Chemical Properties Boron trichloride Toxicity Uses Production method
Boron tribromide
Boron tribromide structure
CAS No.
10294-33-4
Chemical Name:
Boron tribromide
Synonyms
BBr3;Tronite;Bortribromid;tribromoboron;BORON BROMIDE;tribromo-Boron;tribromoborane;tribromo-boran;Boron,tribromo-;BORON TRIBROMIDE
CBNumber:
CB5852622
Molecular Formula:
BBr3
Formula Weight:
250.52
MOL File:
10294-33-4.mol

Boron tribromide Properties

Melting point:
−46 °C(lit.)
Boiling point:
~90 °C
Density 
2.60 g/mL at 20 °C(lit.)
vapor density 
8.6 (vs air)
vapor pressure 
40 mm Hg ( 14 °C)
Flash point:
30 °F
refractive index 
1.4340
storage temp. 
Poison room
solubility 
Miscible with ethanol and carbon tetrachloride.
form 
Solution
color 
colorless
Specific Gravity
2.65
Water Solubility 
Reacts with water.
Sensitive 
Moisture Sensitive
Merck 
14,1347
Stability:
Stable, but reacts violently with water.
CAS DataBase Reference
10294-33-4(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  T+,C,F,N
Risk Statements  14-26/28-35-40-62-11-67-65-50/53-37-51/53-48/20
Safety Statements  9-26-28-36/37/39-45-23-33-16-62-61-60
RIDADR  UN 3390 6.1/PG 1
WGK Germany  3
RTECS  ED7400000
10-21
TSCA  Yes
HazardClass  8
PackingGroup  I
HS Code  28129090
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger
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
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
P320 Specific treatment is urgent (see … on this label).
P331 Do NOT induce vomiting.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
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.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.

NFPA 704

Diamond Hazard Value Description
0
3 2
W
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
Flammability   0 Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride)
Instability   2 Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water (e.g. white phosphorus, potassium, sodium)
Special   W

(NFPA, 2010)

Boron tribromide price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 202207 Boron tribromide 99.9% 10294-33-4 25g $53.4 2018-11-20 Buy
Sigma-Aldrich 202207 Boron tribromide 99.9% 10294-33-4 2kg $1560 2018-11-20 Buy
Alfa Aesar L14880 Boron tribromide, 1M soln. in dichloromethane 10294-33-4 25ml $46.5 2018-11-13 Buy
Alfa Aesar L14880 Boron tribromide, 1M soln. in dichloromethane 10294-33-4 100ml $121 2018-11-13 Buy
Strem Chemicals 93-0514 Boron bromide, 99+% 10294-33-4 100g $95 2018-11-13 Buy

Boron tribromide Chemical Properties,Uses,Production

General Description

Boron tribromide is commercially available and is a strong Lewis acid. It is an excellent demethylating or dealkylating agent for ethers, often in the production of pharmaceuticals.
Additionally, it also finds applications in olefin polymerisation and in Friedel–Crafts chemistry as a Lewis acid catalyst. The electronics industry uses boron tribromide as a boron source in pre-deposition processes for doping in the manufacture of semiconductors. Boron tribromide is a colourless, fuming liquid compound containing boron and bromine. It is usually made by heating boron trioxide with carbon in the presence of bromine: this generates free boron that reacts vigorously with the bromine. Boron tribromide is used extensively in industries associated with pharmaceutical manufacturing, image processing, semiconductor doping, plasma etching, and photovoltaic manufacturing and as a reagent for different chemical processes.

Physical and Chemical Properties

Fuming colorless viscous liquid with a strong irritant, toxic. Melting point is-46 ℃, the boiling point is 91.3 ℃. It was dissolved in carbon tetrachloride. Easily decomposed by water, alcohol. light or thermal decomposition, heated to explode. It can react with the phosphorus, nitrogen, oxygen, sulfur, halogens, ammonia, alkali, phosphorus halides, phosphines, and many substituents of ammonia. A strong corrosive. Strong irritative to Skin, eye or mucous membrane. Approximate toxicity of hydrogen bromide. United States provides operating maximum allowable concentration of boron tribromide in environment Air is 1ppm (10mg/m3). It is obtained in laboratory by Aluminum tribromide reacting with boron trifluoride, then distillation. can be used as a source of doped semiconductor silicon, but also for the preparation of high purity boron and organic boride.
Other related chemical reactions involved by boron tribromide:
In hydroiodic, at 300~400 ℃ continuously fed in boron tribromide, obtained mixture of BIBr2 and BI2Br, BI3, and then separated by distillation, derived dibromo iodide boron.
Boron tribromide reacts with adamantine, generates 1-bromo-adamantane.
The above information is edited by the chemicalbook of Yan Yanyong.

Boron trichloride

Boron trifluoride, boron trichloride, boron tribromide and boron triiodide are four kinds of common boron halides, the last three kinds of halogenated boron can be made in the presence of carbonaceous reducing agent by the high-temperature oxidation reduction of halogens and diboron trioxide, the reaction equation is as follows: B2O3 + 3C + 3Cl2 = 2BCl3 + 3CO, boron trifluoride is obtained by interaction of hydrogen fluoride (fluorspar with concentrated sulfuric acid) and diboron trioxide. Boron halide are all covalent molecules, in the vapor state existing in a planar triangles single molecule. Boron atoms using sp2 hybrid orbitals, p orbital of boron atoms filled of electron in the vertical plane perpendicular to the empty p orbital plane of a halogen atom can form large π bond π64. Experimental results show that the measured bond length (such as B-Cl bond length is 173pm) is shorter than a single bond (single bond B-Cl bond length is 187pm), indicating the presence of large π bond. The melting points of all these four kinds of halides are low, boron trifluoride is the lowest, and the boiling point increases with the increase of atomic number of halogen, indicating four kinds of halide are covalent halide molecules, intermolecular attraction is van der Waals forces. In 4 kinds of halides, stability is declined from boron trifluoride in turn to boron triiodide. Boron halides are easily hydrolyzed to produce boric acid.

Toxicity

Boron tribromide has a strong stimulating effect on human tissue, and its vapor is highly toxic, strong corrosive. Wear masks, gloves and protective clothing during operation. Steam inhalation is strictly prohibited. Immediately sent to hospital for treatment after poisoning.

Uses

as the major chemical raw material of the production of caustic soda, soda ash, widely used in alkali industry.
As a semiconductor silicon doping source, it can be used for preparation of high purity boron and organic boron compound.
Trona is mainly used for making soda ash, caustic soda, soda, and other products. Soda ash is an important industrial raw material, widely used in glass, chemicals, light industry, textile, dyeing, metallurgy, petroleum processing, pharmaceuticals, food and so on. Caustic soda is mainly used for rayon, paper, dyes, soap, plastics, pharmaceuticals, agricultural chemicals and so on. Baking soda is mainly used in food, plastics, rubber, pharmaceutical, printing and dyeing, tanning, soaking seeds and other areas.
As a dopant materials of semiconductor, catalyst, intermediate and brominated agent of organic synthesis, It is a raw material for producing high purity boron and other organic boron compound.
Used in organic synthesis and preparation for high purity boron.
As catalyst, intermediates and Brominating agents for organic synthesis, raw materials for manufacturing high purity boron and other organic boron compound.

Production method

Direct synthesis is putting the dried powder of boron into the reaction tube of a tubular reactor, to make the reaction can be carried out sufficiently, a certain amount of filler should be placed in the reaction tube, the filler material is the same as the inner wall of the reaction tube. The reaction tube was heated to 850 ℃, also bromine in the bromine vessel was heated to a boil, then poured into reaction tube. The boron tribromide liquid produced with activated carbon, zinc and aluminum scrap together in debromination vessel heated to reflux until boron bromide produced is a colorless, and then by crude distillation, distillation, obtained completely colorless bromide boron products. 2B + 3Br2 → 2BBr3
Salt Lake alkaline mineral general uses open-pit mining, ancient alkaline mineral general uses underground dissolution mining law. Mining process
1. open-pit mining 2. underground dissolution method

Chemical Properties

clear to amber liquid with a pungent odour

Chemical Properties

Boron tribromide is a colorless, fuming liquid.

Uses

Boron Tribromide is used as a reagent in the synthesis of 8-hydroxyquinolato compounds used as electron transport materials in EL devices. It is also used in the demethylation of aryl methyl ethers by boron tribromide.

Uses

manufacture of diborane; ultra high purity boron. Reagent for cleavage of ethers, amines, thiols; addition of allenes and alkynes.

General Description

A colorless, fuming liquid with a pungent odor. Boiling point 194°F. Freezing point -51°F. Very toxic by inhalation. Corrosive to metals and tissue.

Reactivity Profile

Boron tribromide strongly attacks wood and rubber with generation of flammable hydrogen gas. Reacts exothermically and violently with water. Mixing tungsten trioxide and Boron tribromide caused an explosion when the reaction was not cooled in an ice bath.

Hazard

Corrosive to tissue. May explode when heated. Upper respiratory tract irritant.

Health Hazard

Inhalation causes severe irritation of mucous membranes. Ingestion causes burns of mouth and stomach. Contact with eyes or skin causes severe burns.

Fire Hazard

Special Hazards of Combustion Products: Toxic fumes of the chemical or hydrogen bromide may form in fires.

Potential Exposure

Boron tribromide is highly toxic and corrosive, it is used as a catalyst in organic synthesis, making diborane, high purity boron, and semiconductors.

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. If victim is conscious, administer water or milk. Do not induce vomiting. Medical observation is recommended for 24 to 48 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.

Shipping

UN2692 Boron tribromide, Hazard class: 8; Labels: 8—Corrosive materials, 6.1—Poison Inhalation Hazard, Inhalation Hazard Zone B.

Incompatibilities

Reacts violently and explosively with water, steam, or alcohols, forming toxic, corrosive, and potentially explosive hydrogen bromide gas. Mixtures with potassium or sodium can explode on impact. Incompatible with oxidizers, strong bases. Attacks some metals, rubbers, and plastics.

Boron tribromide Preparation Products And Raw materials

Raw materials

Preparation Products


Boron tribromide Suppliers

Global( 170)Suppliers
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