Potassium chloroplatinate Property

Melting point:

250 °C (dec.)(lit.)

Density 

3.499

vapor pressure 

0Pa at 20℃

refractive index 

^=1.825

storage temp. 

Inert atmosphere,Room Temperature

solubility 

50g/l

form 

Powder/Solid

Specific Gravity

3.5

color 

Yellow-Orange

Water Solubility 

50 g/L (95 ºC)

Sensitive 

Hygroscopic

Merck 

14,7636

Solubility Product Constant (Ksp)

pKsp: 5.13

Exposure limits

ACGIH: TWA 0.002 mg/m3
NIOSH: IDLH 4 mg/m3; TWA 0.002 mg/m3

Stability:

Stable. Incompatible with acids, interhalogen compounds, strong oxidizing agents.

CAS DataBase Reference

16921-30-5(CAS DataBase Reference)

EPA Substance Registry System

Platinate(2-), hexachloro-, dipotassium, (OC-6-11)- (16921-30-5)

Safety

Hazard Codes 

T

Risk Statements 

25-41-42/43

Safety Statements 

22-26-36/37/39-45

RIDADR 

UN 3290 6.1/PG 2

WGK Germany 

1

RTECS 

TP1650000

TSCA 

Yes

HS Code 

2843 90 90

HazardClass 

6.1

Toxicity

LD50 orally in Rabbit: 195 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H290May be corrosive to metals

H301Toxic if swalloed

H317May cause an allergic skin reaction

H318Causes serious eye damage

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H372Causes damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P234Keep only in original container.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Potassium chloroplatinate Chemical Properties,Usage,Production

Chemical Properties

Potassium chloroplatinate, also known as potassium hexachloroplatinate(IV), is an inorganic compound with the formula K2PtCl6. It is an orange to yellow crystalline solid that is insoluble in water. Potassium hexachloroplatinate(IV) is used for the determination of potassium by gravimetric analysis. It is also used to prepare potassium tetrchloroplatinate by reduction using hydrazine dihydrochloride. Further, it is used in photography.

Uses

Potassium chloroplatinate is a red colored crystal that is soluble in water but less soluble in alcohol. Potassium chloroplatinate is produced by a complicated treatment of the reducing of platinum chloride with sulfurous gas and adding potassium chloride. It was used primarily in the platinum printing process, but also for toning silver prints.

Preparation

It is formed by reaction of soluble potassium salt solution and chloroplatinic acid.

General Description

Potassium hexachloroplatinate (K₂PtCl₆) is a source material for the preparation of platinum based compounds. It can be used in the preparation of platinum colloids by its reduction in an aqueous solution.

Hazard

Toxic by ingestion and inhalation.

Flammability and Explosibility

Not classified

Safety Profile

Mutation data reported. Human systemic effects by intradermal route: dermatitis. When heated to decomposition it emits toxic fumes of K2O and Cl-. Used as a catalyst for carbonylation of alkynes. See also PLATINUM COMPOUNDS.

Purification Methods

It crystallises from water (20mL/g) between 100o and 0o. Its solubility in H2O is 0.7% at 0o, 1.12% at 20o, 2.16% at 50o and 5.13% at 100o. [Grube in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1571 1965.]