High quality Sodium hydrosulphite 1.white crystalline powder 2.tech grade 3.packing:50kgs/iron drum 4.ISO cert

High quality Sodium hydrosulphite

1.white crystalline powder

2.tech grade

3.packing:50kgs/iron drum 4.ISO cert

Detailed specification

Appearance	white crystalline powder
Purity	90%min
Na2CO3	0.6-2.0%
Na2S2O3	0.5-1%
Na2S2O5	5-7%
NaHSO3	0.5%max
Iron	50ppm max

High quality Sodium hydrosulphite