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Product Information

Basic information about this product

Article No. 001702
Grade Extra Pure
Purity 99%
CAS No. 7789-09-5
Molecular Formula (NH4)2Cr2O7
Molecular Weight 252.06
H.S. Code 28415090
Shelf Life 60 Months

Hazard Information

Safety and hazard classification

GHS03 GHS03
GHS05 GHS05
GHS06 GHS06
GHS08 GHS08
GHS09 GHS09
Hazard Symbols
GHS03, GHS05, GHS06, GHS08, GHS09

Product Description

Detailed information about the product

Physical Properties

Physical state at 20 °C Solid Colour Orange to red
Odour Odorless pH value 3 - 4
Melting point/ Freezing point [°C] 170 °C Decomposition point [°C] 170 °C
Auto-ignition temperature [°C] 218°C Density [g/cm3] 2.15
Solubility in water [% weight] 360 g/l (20°C) Oxidising properties The substance or mixture is classified as oxidizing with the subcategory 2

Specifications

Appearance Orange colored crystalline powder Assay (iodometric) Min 99%
Chloride (Cl) Max 0.01% Sulphate (SO4) Max 0.05%

Safety Information and Hazard Symbols

Flame Over Circle Skull and Crossbones Corrosion Environment Health Hazard      

Symbol: GHS03, GHS05, GHS06, GHS08, GHS09
Signal Word: Danger
UN No.: 1439
IMCO Class No.: 5.1
Packing Group: II
Hazardous Statement: H272-H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410
Precaution Statement: P210-P260-P264-P273-P280-P301+P310-P303+P361+P353-P304+P340+P310-P305+P351+P338