Specifications
Sodium dithionite1.assay 85%,88%,90%2.White crystalline powder3. used in textile industry
items	Industrial Grade	Food Grade
	85%	88%	90%	85%	88%	90%
Appearance	White crystalline powder
odor	Odorless or with a slight odor of sulfur dioxide
Na2S2O4  %	≥85	≥88	≥90	≥85	≥88	≥90
Water Insolubles%	≤0.2	≤0.2	≤0.2	≤0.1	≤0.1	≤0.1
Heavy Metal Contentppm	≤1	≤1	≤1	≤1	≤1	≤1
Na2CO3 (%)	0.9-5.0	0.9-5.0	0.9-5.0	0.9-5.0	0.9-5.0	0.9-5.0
Fe(ppm)	≤20	≤20	≤20	≤20	≤20	≤20
Shelf life (Months)	12	12	12	12	12	12