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Cas Database |
| Name |
Arsenic(II) bromide |
EINECS | 232-057-4 |
| CAS No. | 7784-33-0 | Density | 3.54 g/cm3 |
| PSA | 0.00000 | LogP | 2.15600 |
| Solubility | decomposed in H2O, forming HBr, As2O3; miscible with ether, benzene [MER06] | Melting Point |
31 °C
|
| Formula | AsBr3 | Boiling Point | 221 °C |
| Molecular Weight | 314.634 | Flash Point | N/A |
| Transport Information | N/A | Appearance | N/A |
| Safety | Confirmed human carcinogen. A poison. See also ARSENIC COMPOUNDS and BROMIDES. When heated to decomposition it emits very toxic fumes of As and Br−. | Risk Codes | 50/53-45-34-23/25 |
| Molecular Structure |
|
Hazard Symbols | N-T,N,T |
| Synonyms |
Arsenicbromide (AsBr3) (6CI,8CI); Arsenic tribromide; Arsenous bromide; Tribromoarsine |
Article Data | 59 |
Arsenic(II) bromide Synthetic route
| Conditions | Yield |
|---|---|
| at 100℃; for 0.5h; Temperature; | 92% |
| In hydrogen bromide aq. HBr; As2O3 dissoln. with heating; |
| Conditions | Yield |
|---|---|
| In neat (no solvent) dropwise addn. of BBr3 with continuous stirring to tributyl arsenite at -5 to -7°C under dry Ar or N2, additional stirring (20 min), decanting the liquid phase; distg. the solid at reduced pressure in a CO2 stream; elem. anal.; | 68.9% |
| Conditions | Yield |
|---|---|
| In further solvent(s) byproducts: Se2Br2; from SeOBr2 and As;; |
| Conditions | Yield |
|---|---|
| In neat (no solvent) from As and bromine vapor;; | |
| In carbon disulfide from As and bromine dild. with CS2;; | |
| In neat (no solvent) addition of small amounts of powdered As to Br2, until no more inflammation takes place;; distillation;; |
| Conditions | Yield |
|---|---|
| In not given byproducts: O2; | |
| In neat (no solvent) byproducts: O2; room temperature;; | |
| In neat (no solvent) byproducts: O2; room temperature;; |
| Conditions | Yield |
|---|---|
| With sulfur In neat (no solvent) byproducts: SO2; | |
| With sulfur In neat (no solvent) byproducts: SO2; heating of a mixture of As, Br2 and S for 7 hours;; pptn.; melting and filtation through glass wool;; | >99 |
| With S In neat (no solvent) byproducts: SO2; heating of a mixture of As, Br2 and S for 7 hours;; pptn.; melting and filtation through glass wool;; | >99 |
| With sulfur In not given as in: G. Oddo and U.Giachery, Gazz. Chim. Ital., 1924, 53, 56; |
| Conditions | Yield |
|---|---|
| byproducts: KCl; heated for some hours at 200 °C in closed tube; | |
| In neat (no solvent) heating, exclusion of H2O and O2;; |
| Conditions | Yield |
|---|---|
| In not given byproducts: C2H4; |
| Conditions | Yield |
|---|---|
| In further solvent(s) byproducts: As sulfide; from S2Br2 and excess of As;; | |
| In further solvent(s) byproducts: As sulfide; from S2Br2 and excess of As;; | |
| In neat (no solvent) byproducts: arsenic sulfide; exothermic reaction;; |
- 10294-33-4
boron tribromide
- 7784-34-1
arsenic trichloride
A
- 10294-34-5
boron trichloride
B
- 7784-33-0
arsenic(III) bromide
Arsenic(II) bromide Chemical Properties
Molecule structure of Arsenic(II) bromide (CAS NO.7784-33-0):
IUPAC Name: Tribromoarsane
Molecular Weight: 314.6336 g/mol
Molecular Formula: AsBr3
Density: 3.54 g/cm3
Melting Point: 31 °C
Boiling Point: 221 °C
Exact Mass: 313.674563
MonoIsotopic Mass: 311.676609
Heavy Atom Count: 4
Complexity: 8
Canonical SMILES: [As](Br)(Br)Br
InChI: InChI=1S/AsBr3/c2-1(3)4
InChIKey: JMBNQWNFNACVCB-UHFFFAOYSA-N
EINECS: 232-057-4
Arsenic(II) bromide Consensus Reports
Reported in EPA TSCA Inventory. Arsenic and its compounds are on the Community Right-To-Know List.
Arsenic(II) bromide Safety Profile
Hazard Codes: 
N, 
T
Risk Statements: 50/53-45-34-23/25
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R45:May cause cancer.
R34:Causes burns.
R23/25:Toxic by inhalation and if swallowed.
Safety Statements: 61-60-53-36/37/39-28A-20/21
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
S60:This material and its container must be disposed of as hazardous waste.
S53:Avoid exposure - obtain special instructions before use.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
S28:After contact with skin, wash immediately with plenty of soap-suds.
S20:When using, do not eat or drink.
S21:When using do not smoke.
RIDADR: 1555
HazardClass: 6.1(a)
PackingGroup: II
Confirmed human carcinogen. A poison. See also ARSENIC COMPOUNDS and BROMIDES. When heated to decomposition it emits very toxic fumes of As and Br−.
Arsenic(II) bromide Standards and Recommendations
OSHA PEL: TWA 0.01 mg(As)/m3; Cancer Hazard
ACGIH TLV: TWA 0.01 mg/m3; Confirmed Human Carcinogen; BEI: 35 μ (As)/L inorganic arsenic and methylated metabolites in urine
NIOSH REL: (Arsenic, Inorganic) CL 2 µg(As)/m3/15 M
DOT Classification: 6.1; Label: Poison
Arsenic(II) bromide Specification
Arsenic(II) bromide (CAS NO.7784-33-0) is also named as Arsenic bromide (AsBr3) ; Arsenic tribromide ; Arsenious bromide ; Arsenous bromide ; Arsenous tribromide ; HSDB 425 ; Tribromoarsine ; UNII-41CN475O7F . It is faintly yellow solid. Arsenic(II) bromide (CAS NO.7784-33-0) is toxic. It is not flammable. It can emit toxic gases such as hydrogen bromide when contact with water. It will produce toxic arsenic and bromide fumes by hest. So the storage environment should be ventilate, low-temperature and dry. Keep Arsenic(II) bromide (CAS NO.7784-33-0) separate from raw materials of food.
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