ITEM	STANDARD
Property	White crystal or crystalline powder
Identification ?	Positive
PH value ?	5.5-5.6
Chloride, %=< ?	0.01
Sulfate, %=< ?	0.02
P-aminophenol, %=< ?	0.005
Loss on drying, %=< ?	0.5
Residue on ignition, %=<	0.1
Heavy Metal, ppm=<	10
Substances concerned	Up to regulation
Content (dry goods),%	98-102.0

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