Thallium oxide

  • Thallic oxide
  • Dithallium trioxide
Formula
Tl2O3
Structure
Description
Brown powder.

Registry Numbers and Inventories.
CAS
1314-32-5
EC (EINECS/ELINCS)
215-229-3
RTECS
XG2975000
RTECS class
Other
UN (DOT)
1707
Merck
12,9404
Beilstein/Gmelin
9556 (G)
RCRA
P113
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
O3Tl2
Formula mass
456.76
Melting point, °C
717
Density
5.56 g/cm3 (0 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Store in a tightly closed container. Keep away from food and drinking water. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Do not ingest or inhale.
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
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Isolate area and deny entry.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Forms explosive mixtures with sulfur and sulfur compounds.
Decomposition
Thallium fumes.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. Decomposes at high temperatures releasing oxygen which may cause an existing fire to burn more vigorously. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire.
Fire potential
Substance is noncombustible. Decomposes at high temperatures releasing oxygen which may cause an existing fire to burn more vigorously.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
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
Chronic inhalation can cause hair loss, fatigue, weight loss, and pain in the extremities. Chronic skin exposure may cause effects similar to those of chronic inhalation.
   Ingestion
May be fatal if swallowed. Symptoms of acute intoxication include pain in the extremeties, abdominal pain, nausea, vomiting, wobbly gait, jumbled speech, convulsions, and
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
May cause skin irritation. May be absorbed through the skin. Chronic inhalation can cause hair loss, fatigue, weight loss, and pain in the extremities. Chronic skin exposure may cause effects similar to those of chronic inhalation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Treat symptomatically and supportively. Get medical aid immediately. SPEED IS ESSENTIAL. A DOCTOR MUST BE NOTIFIED AT ONCE.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
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
TOX