SODIUM DITHIONITE Extra Pure

Chemical Information
Article No.	AL4133
Grade	Extra Pure
Purity	85%
CAS Number	7775-14-6
Molecular Formula	Na2S2O4
Molecular Weight	174.11
HS Code	28311010
Shelf Life	2 Years

Physical Properties
Vapour density	3.6
Solubility in water(% weight)	Soluble in water
Colour	White crystalline
Melting point/ Freezing point(°C)	300 °C
pH value	9-Jul
Density (g/cm3)	2.19
Partition coefficient Log Pow octanol / water at 20 °C	-4.7
Odour	Distinct sulfur dioxide odor
Physical state at 20 °C	Solid

Safety Information and Hazard Symbols
Precaution Statement	P235 + P410
Hazardous Statement	H251-H302
Symbol	GHS02, GHS07
Signal Word	Danger
Packing Group	II

Specifications
Chloride (Cl)	Max 0.01%
Appearance	White crystalline powder
Iron (Fe)	Max 0.002%