THALLIUM(I) FLUORIDE

CAS NO.：7789-27-7
Empirical Formula: FTl
Molecular Weight: 223.38
MDL number: MFCD00049607
EINECS: 232-154-1
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-25 17:15:13

What is THALLIUM(I) FLUORIDE?

Chemical properties

white powder(s); ortho-rhomb; hard, shiny crystal(s); can deliquescent, e.g., if breathed upon, however reverts to anhydrous form in dry air; not typically hygroscopic; enthalpy of fusion 14.00kJ/mol [MER06] [STR93] [CRC10]

Physical properties

Hard shiny crystals; orthorhombic structure; density 8.23 g/cm3 at 4°C; melts at 327°C; begins to sublime at 300°C; vaporizes at 655°C; very soluble in water, 78.6 g/100mL at 15°C; decomposes in hot water; slightly soluble in alcohol.

The Uses of THALLIUM(I) FLUORIDE

Thallium(I) fluoride is used as chemical reagents, fine chemicals, pharmaceutical research and development.

The Uses of THALLIUM(I) FLUORIDE

In the preparation of fluoro esters.

Hazard

Highly toxic (See Thallium).

Safety Profile

Poison by ingestion. When heated to decomposition it emits very toxic fumes of Fand T1. See also THALLIUM COMPOUNDS and FLUORIDES.

Properties of THALLIUM(I) FLUORIDE

Melting point:	322 °C(lit.)
Boiling point:	655 °C
Density	8.3 g/mL at 25 °C(lit.)
Flash point:	655°C
form	Powder
color	White
Specific Gravity	8.23
Water Solubility	Very soluble in water
Merck	14,9262
Exposure limits	ACGIH: TWA 0.02 mg/m3; TWA 2.5 mg/m3 (Skin) NIOSH: IDLH 15 mg/m3; IDLH 250 mg/m3; TWA 0.1 mg/m3
CAS DataBase Reference	7789-27-7(CAS DataBase Reference)
EPA Substance Registry System	Thallium fluoride (TlF) (7789-27-7)

Safety information for THALLIUM(I) FLUORIDE

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H300:Acute toxicity,oral H330:Acute toxicity,inhalation H373:Specific target organ toxicity, repeated exposure H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P320:Specific treatment is urgent (see … on this label). P330:Rinse mouth. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P405:Store locked up.