1, Properties: Molecular formula:NH₂S0₃H , Molecular weight:97.09, white crystal, odorless, Melting point: 205.

2, Technical index(standard:HG/T2527-93)

Index	A	B
Purity(NH2S03H)	99.8%	99.5%
Sulfate (SO4)	0.01%	0.05%
Iron (Fe)	0.0002%	0.0005%
Heavy metal	0.0003%	0.001%
Insoluble in water	0.01%	0.01%
Moisture	0.03%	0.05%

3, Uses
1), material of sweeting agent
2), diionic cleaning agent with the best performance
3), bleaching agent of pulp
4), vulcanizator, catalyst, disinfectant, fire retardant
5), the production of dye and pigment