THALLIUM(I) IODIDE

CAS NO.：7790-30-9
Empirical Formula: ITl
Molecular Weight: 331.29
MDL number: MFCD00011279
EINECS: 232-199-7
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:17:11

What is THALLIUM(I) IODIDE?

Chemical properties

Yellow powder. Insoluble in alcohol; slightly soluble in water; soluble in aqua regia.

The Uses of THALLIUM(I) IODIDE

Thallium(I) iodide is used in mercury lamp to enhance its performance. It is mainly used for underwater lighting, since the blue green light produced has least absorption in water. Scintillator made by using iodide salt of thallium, sodium and cesium is utilized for radiation scintillation detectors.

The Uses of THALLIUM(I) IODIDE

Mixed crystals with thallium bromide for infrared radiation transmitters.

What are the applications of Application

Thallium(I) Iodide is a water-insoluble metal iodide

Safety Profile

Poison by ingestion and subcutaneous routes. Human systemic effects: blood pressure lowering, change in motor activity, muscle weakness. When heated to decomposition it emits very toxic fumes of T1 and I-. See also IODIDES and THALLIUM COMPOUNDS.

Purification Methods

Reflux it for 2-3hours with water containing HI, then wash it until acid-free, and dry it at 120o. Store it in brown bottles. [D.nges in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 870 1963]. POISONOUS.

Properties of THALLIUM(I) IODIDE

Melting point:	440 °C(lit.)
Boiling point:	823°C
Density	7.29 g/mL at 25 °C(lit.)
Flash point:	824°C
solubility	insoluble in ethanol
form	Powder
Specific Gravity	7.09
color	Yellow
Water Solubility	Practically insoluble in water
Sensitive	Light Sensitive
Merck	14,9264
Solubility Product Constant (Ksp)	pKsp: 7.26
Exposure limits	ACGIH: TWA 0.02 mg/m3 (Skin)
CAS DataBase Reference	7790-30-9(CAS DataBase Reference)
EPA Substance Registry System	Thallium iodide (TlI) (7790-30-9)

Safety information for THALLIUM(I) IODIDE

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H373:Specific target organ toxicity, repeated exposure H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P314:Get medical advice/attention if you feel unwell.