7789-40-4

Name THALLIUM(I) BROMIDE
CAS 7789-40-4
EINECS(EC#) 232-163-0
Molecular Formula BrTl
MDL Number MFCD00011273
Molecular Weight 284.29
MOL File 7789-40-4.mol
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Chemical Properties

Description
Thallium bromide is a yellow-white solid and hygroscopic. It is similar to silver bromide. It gets darker when light shines on it. It is very toxic, like all thallium compounds. It does not dissolve in water. Thallium bromide is used in gamma ray and x-ray detectors and also in semiconductors. Prolonged period of exposure to thallium compounds has been reported to cause adverse health effects such as joint pain, severe pain in legs, loss of appetite, fatigue, and albuminuria.
Appearance YELLOW POWDER
Melting point  >300 °C(lit.)
Boiling point  815 °C
density  7.5 g/mL at 25 °C(lit.)
form  beads
color  yellow
Specific Gravity 7.557
Water Solubility  Practically insoluble in water
Sensitive  Hygroscopic
Merck  14,9258
Solubility Product Constant (Ksp) pKsp: 5.43
Exposure limits ACGIH: TWA 0.02 mg/m3 (Skin)
Uses
Mixed crystals with thallium iodide for infrared radiation transmitters used in military detection devices.
CAS DataBase Reference 7789-40-4(CAS DataBase Reference)
EPA Substance Registry System Thallium bromide (TlBr) (7789-40-4)

Safety Data

Hazard Codes  T+,N
Risk Statements 
R26/28:Very Toxic by inhalation and if swallowed .
R33:Danger of cumulative effects.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S13:Keep away from food, drink and animal feeding stuffs .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 1707 6.1/PG 2
WGK Germany  3
RTECS  XG3850000
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  28275900
Safety Profile
Poison by ingestion and subcutaneous routes. Reacts violently with Na, K. When heated to decomposition it emits very toxic fumes of Brand T1. See also BROMIDES and THALLIUM COMPOUNDS.

Hazard Information

Material Safety Data Sheet(MSDS)

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