Thallium(I) iodide

  • Thallous iodide
  • Thallium monoiodide
Formula
TlI
Structure
Description
Yellow crystalline powder

Registry Numbers and Inventories.
CAS
7790-30-9
EC (EINECS/ELINCS)
232-199-7
26/28 33 51/53
13 28 45 61
RTECS
XG5425000
RTECS class
Human Data
UN (DOT)
1707
Merck
13,9335
Beilstein/Gmelin
13711 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
ITl
Formula mass
331.29
Melting point, °C
440
Boiling point, °C
823
Sublimation point, °C
355
Density
7.29 g/cm3
Solubility in water
82 mg/L (25 C)
Dielectric constant
14
Thermal expansion
1.342E-4/K
Heat of fusion
13.1 kJ/mol
Heat of vaporization
128.1 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved respirator.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Hydrogen iodide, Thallium.

Fire.
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Non-Combustible
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
1
 

Health.
Exposure effects
Dangerous for the environment. Danger of cumulative effects. Very toxic by inhalation and if swallowed. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Read
   Ingestion
May be fatal if swallowed.
   Inhalation
May be fatal if inhaled. Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation. Can cause blindness.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of skin contact, flush with copious amounts of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
1707
Response guide
Hazard class
6.1
Packing Group
II