THALLIUM (III) CHLORIDE Property

Melting point:

37°C

form 

Crystalline Aggregates

Water Solubility 

It is soluble in water 862g/L

Exposure limits

ACGIH: TWA 0.02 mg/m3 (Skin)

Dielectric constant

2.2（20℃）

CAS DataBase Reference

13453-33-3

Safety

Hazard Codes 

T+,N

Risk Statements 

26/28-33-51/53

Safety Statements 

13-28-45-61

RIDADR 

UN 1707 6.1/PG 2

WGK Germany 

3

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Hazard statements

H300Fatal if swallowed

H330Fatal if inhaled

H373May cause damage to organs through prolonged or repeated exposure

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P320Specific treatment is urgent (see … on this label).

P330Rinse mouth.

P405Store locked up.

THALLIUM (III) CHLORIDE Chemical Properties,Usage,Production

Chemical Properties

white crystal(s) [STR93]

Chemical Properties

Colorless crystals, deliquescing in moist air. M.p. about 43°C. A saturated aqueous solution (about 86% TlCl3 ? 4 H2O at 17°C) is strongly acidic due to hydrolysis, and precipitates brown Tl2O3 . xH2O when highly diluted. Readily soluble in alcohol and ether; 90-95% of the TlCl3 is extracted from a 6N HCl solution of TlCl3 by shaking with an equal volume of ether.

Synthesis

According to Meyer, TlCl ? 4H2O is prepared by passing Cl2 through a nearly boiling suspension of TlCl in a limited amount of water. After intermediate Tl(I)-T1(III) chloro compounds have dissolved, the solution is evaporated to a thin syrup with continuous addition of Cl2 . The water bath temperature should be 60-70°C. The syrup immediately solidifies to a slurry of fine, white needles of TlCl ? 4 H2O on cooling in an ice bath, larger crystals form on slower cooling. The crystals are rapidly filtered and dried 24 hours over H2SO4 andKOH(virtually no efflorescence). Cushman claims that TlC13 . 4 H2O crystals can only be dried between filter papers if loss of water is to be avoided. Hecht states that he found no definite tetrahydrates.
TlCl + Cl2 + 4H2O = TlCl3 ? 4H2O