THALLIUM(I) FLUORIDE Chemical Properties

Melting point:

322 °C(lit.)

Boiling point:

655 °C

Density 

8.3 g/mL at 25 °C(lit.)

Flash point:

655°C

form 

Powder

Specific Gravity

8.23

color 

White

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

Hazard Codes 

T+,N,T

Risk Statements 

26/28-33-51/53

Safety Statements 

13-28-45-61

RIDADR 

UN 1707 6.1/PG 2

WGK Germany 

3

RTECS 

XG4900000

Hazard Note 

Toxic

TSCA 

T

HazardClass 

6.1

PackingGroup 

II

HS Code 

28261990

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

THALLIUM(I) FLUORIDE Usage And Synthesis

Preparation

Thallium fluoride is prepared by reacting thallium carbonate with hydrofluoric acid. Also, the compound can be made by reacting thallium metal with fluorine.

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.

Uses

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

Uses

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.

THALLIUM(I) FLUORIDE(7789-27-7)Related Product Information

• THALLIUM(III) TRIFLUOROACETATE
• THALLIUM (I) TRIFLUOROMETHANESULFONATE
• THALLIUM(I) 2,4-PENTANEDIONATE
• THALLIUM(I) BROMIDE
• THALLIUM(I) IODIDE
• THALLIUM (III) CHLORIDE
• THALLIUM 2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATE
• THALLIUM(I) HEXAFLUOROACETYLACETONATE
• THALLIUM HEXAFLUOROPHOSPHATE
• CYCLOPENTADIENYLTHALLIUM
• THALLIUM(III) NITRATE TRIHYDRATE
• Thaumatin
• THALLIUM(I) NITRATE
• THALLIUM(I) SULFATE
• THALLIUM HYDROTRIS[3-(2-PYRIDYL)PYRAZOL-1-YL]BORATE
• THALLIUM(III) OXIDE
• THALLIC ACETATE SESQUIHYDRATE
• Thallium chlorate