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South Africa
Contact Person Paul
28 toby str westdene, Johannesburg, Gauteng
China factory wholesale quality sodium pyrosulfite nice price for sale
| Item | Chinese standard | Company standard | |
| HG/T********8 | |||
| Top-grade | First grade | ||
| Main content(Na2S2O5) | *6.0 min | *5 | *6.5 |
| Fe %( Fe) | 0.**5max | 0.*1 | 0.**2 |
| Water-Insoluble | 0.*5max | 0.*5 | 0.*2 |
| Arsenic(As) content | 0.***1max | —— | 0.***1 |
Usage:
1. Chemical industry
Used in the production of insurance powder, sulfamethazine, a caprolactam, etc., as well as the purification of chloroform, phenylpropane sulfone and benzaldehyde. The photographic industry is used as an ingredient in fixers. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
