POTASSIUM HEXAHYDROXOANTIMONATE(V) Property

Melting point:

240 °C (dec.)(lit.)

Density 

3.27[at 20℃]

storage temp. 

Store at +5°C to +30°C.

solubility 

20g/l

form 

Powder

color 

White

PH

7.5-9.0 (20g/l, H2O, 20℃)

Water Solubility 

Soluble in water and glycerine. Insoluble in ethanol.

Exposure limits

ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3

CAS DataBase Reference

12208-13-8(CAS DataBase Reference)

EPA Substance Registry System

Antimonate (Sb(OH)61-), potassium, (OC-6-11)- (12208-13-8)

Safety

Hazard Codes 

Xn,N

Risk Statements 

20/22-51/53

Safety Statements 

61

RIDADR 

UN 1549 6.1/PG 3

WGK Germany 

2

HazardClass 

6.1

PackingGroup 

III

HS Code 

28419000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

POTASSIUM HEXAHYDROXOANTIMONATE(V) Chemical Properties,Usage,Production

Uses

Potassium antimonyl trihydrate is used as a detecting agent for sodium. It is used as a mordant/ fixing agent in leather and textile dying industries. It is also used as a analytical reagent and flux additive for electroplating.

Preparation

Heating antimony pentoxide with excess potassium hydroxide produces rubbery, granular, or crystalline products. If the substance is recrystallized from a little water, deliquescent mammilated crystals form. Treated with copious cold water or boiled together with a small quantity of water, they are converted into potassium hexahydroxyantimonate, K[Sb(OH)6], which is sparingly soluble in cold water but somewhat more soluble in warm water. Solutions precipitate sodium as the sparingly soluble sodium hexahydroxyantimonate, Na[Sb(OH)6]. This reaction is used for the detection of sodium.