Property: White free-flow crystal powders, has strong reducibility.
Useage: Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching, also be used in bleaching paper pulps, bleaching kaolin clay, mineral, reducing agent in chemical industry.
Packing: 50kg/drum; 21mt/20'FCL
|
INDEX
|
90%
|
88%
|
85%
|
FOOD ADDITIVE
|
|
Na2S2O4
|
≥90%
|
≥88%
|
≥85%
|
≥85%
|
|
Fe
|
≤20ppm
|
≤20ppm
|
≤20ppm
|
≤20ppm
|
|
ZincZn
|
≤1ppm
|
≤1ppm
|
≤1ppm
|
≤1ppm
|
Other heavy metal
calculated as Pb
|
≤1ppm
|
≤1ppm
|
≤1ppm
|
≤1ppm
|
|
Water Insolubles
|
≤0.05%
|
≤0.05%
|
≤0.05%
|
≤0.05%
|
|
Shelf Life(month)
|
12
|
12
|
12
|
12
|