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CHARACTERS White or almost white powder or colourless crystals.
CAS No.: 7558-79-4
Soluble in water, practically insoluble in ethanol (96%).
Content 98.0% to 101.0% (dried substance)
Identification Complies with EP/BP tests
Appearance of solution Solution S is clear and colourless
Reducing substances The solution retains a slight red colour
Monosodium phosphate Maximum 2.5%
Chlorides Maximum 400 ppm
Sulphates Maximum 0.1%
Arsenic Maximum 4 ppm
Iron Maximum 40 ppm
Heavy metals Maximum 20 ppm
Loss on drying 19.5% to 21.0%