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Chromium potassium sulfate dodecahydrate

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Chromium potassium sulfate dodecahydrate Basic information

Product Name:
Chromium potassium sulfate dodecahydrate
Synonyms:
  • Chromium (III) Potassium Dodecahydrate
  • CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)
  • chromicpotassiumsulfatedodecahydrate
  • chromicpotassiumsulfatedodecahydrate(chromealum)
  • Chromium(III)potassiumsulfate(1:1:2),dodecahydrate
  • potassiumchromiumalumdodecahydrate
  • Potassiumchromiumsulfate,doe
  • Chromium(Ⅲ) potassium sulfate dodecahydrate
CAS:
7788-99-0
MF:
CrH5KO5S
MW:
208.19
EINECS:
616-539-5
Mol File:
7788-99-0.mol
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Chromium potassium sulfate dodecahydrate Chemical Properties

Melting point:
89 °C(lit.)
Density 
1.83
storage temp. 
Store at +15°C to +25°C.
solubility 
water: soluble(lit.)
form 
Solid
color 
Violet
PH
3 (50g/l, H2O, 20℃)
Odor
Odorless
Water Solubility 
24 g/100 mL (15 ºC)
Merck 
14,2229
Exposure limits
NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3
Stability:
Stable. Incompatible with magnesium, aluminium.
CAS DataBase Reference
7788-99-0(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/38
Safety Statements 
22-24/25-37/39-26
WGK Germany 
2
RTECS 
GB6850000
TSCA 
Yes
HS Code 
28332990

MSDS

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Chromium potassium sulfate dodecahydrate Usage And Synthesis

Chemical Properties

deep violet-red crystals

Uses

Chromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr).

Uses

Chromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.
It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers.

Uses

Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.

General Description

Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.

Purification Methods

Crystallise it from hot water (2mL/g) by cooling.

Chromium potassium sulfate dodecahydrate Preparation Products And Raw materials

Raw materials

Sulfuric acid Potassium dichromate

Preparation Products

CHROMIUM POTASSIUM SULFATENeutral Black 2S-RLNeutral Grey 2BLSolvent Red KLSolvent Red BLNeutral Bordeaux D-BN

Chromium potassium sulfate dodecahydrate Supplier

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