Thallium chloride

  • Thallous chloride
  • Thallium(I) chloride
Formula
TlCl
Structure
Description
White, crystalline powder.
Uses
As catalyst in chlorinations.

Registry Numbers and Inventories.
CAS
7791-12-0
EC (EINECS/ELINCS)
232-241-4
RTECS
XG4200000
RTECS class
Mutagen; Reproductive Effector
UN (DOT)
1707
Merck
12,9395
Beilstein/Gmelin
13669 (G)
RCRA
U216
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Korea ECL
Listed

Properties.
Formula
ClTl
Formula mass
239.83
Melting point, °C
430
Boiling point, °C
720
Vapor pressure, mmHg
0.913 (422 C)
Density
5.246 g/cm3 (642 C)
Solubility in water
Slightly soluble
Thermal expansion
0.00032/K
Heat of fusion
16.49 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Store protected from light.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong reducing agents, strong acids.
Decomposition
Chlorine, thallium fumes.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 0.1 mg/m3 [skin] OSHA PEL: TWA 0.1 mg/m3 [skin] IDLH 15 mg/m3 (as Tl)
Exposure effects
Prolonged absorption may cause anorexia, weight loss, vomiting, mild diarrhea, skin rash, alopecia and anemia.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause alopecia (loss of hair). Large doses of thallium may produce hypotension and bradycardia.
   Inhalation
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
   Skin
May cause skin irritation. Excessive drying of the skin may result form repeated or prolonged contact.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1707
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
TLC