Specifications:

Sodium hydrosulphite,Sodium hydrosulfite
1. Free Sample
2. Good Quality and Stock Price
3. ISO9001:2000
4. Quick Shipment

Items	Index
	Tech Grade			Food Grade
Na2S2O4, %  ≥	85	88	90	85
Fe, ppm  ≤	20	20	20	---
Zn, ppm  ≤	1	1	1	1
As, ppm ≤	---	---	---	1
Heavy Metal(as Pb), ppm  ≤	---	---	---	1
Water Insolubles, % ≤	0.4	0.4	0.05	0.05