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POTASSIUM CHROMATE Extra Pure

Chromic acid dipotassium salt

COAs

Packings

500 g (00500)

1PB1200500
Print friendly version
Article No. 05343 Grade Extra Pure
Purity 99% CAS No. 7789-00-6
Molecular Formula K2CrO4 Molecular Weight 194.19
H.S. Code 2841.5090 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Yellow
Odour Odorless pH value 8.5 - 10 at 50 g/l at 20 °C
Melting point/ Freezing point [°C] 971 °C Boiling point [°C] 1000°C
Vapour density 6.7 Density [g/cm3] 2.73
Solubility in water [% weight] 69.9g/100 g water @ 200C

Specifications

Appearance Lemon yellow crystalline powder Assay (oxidimetric) Min 99%
Chloride (Cl) Max 0.005% Sulphate (SO4) Max 0.05%
Sodium (Na) Max 0.5% Calcium (Ca) Max 0.05%
Loss on drying (at 105°C) Max 0.5% pH (5% solution in water) 8.6 - 9.8

Safety Information and Hazard Symbols

Exclamation Mark Environment Health Hazard
Symbol: GHS07, GHS08, GHS09
 Signal Word: Danger
 UN No.: 3288
 IMCO Class No.: 6.1
 Packing Group: III
 Hazardous Statement: H315-H317-H319-H335-H340-H350i-H410
 Precaution Statement: P201-P261-P273-P280-P305 + P351 + P338-P308 + P313
Revision Date: 20-Mar-2017

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