Item |
Standard |
||
Industrial grade |
Food grade |
Refining grade |
|
Identifications |
Meet the specifications |
Meet the specifications |
Meet the specifications |
Assay, % |
≥ 98.0 |
98.0 ~ 102.0 |
99.0 ~ 102.0 |
Drying loss, % |
≤ 0.50 |
≤ 0.30 |
≤ 0.30 |
Heavy metal, μg/g |
≤ 10 |
≤ 10 |
≤ 10 |
Sulphate, % |
≤ 0.05 |
≤ 0.05 |
≤ 0.05 |
Chloride, % |
≤ 0.07 |
≤ 0.07 |
≤ 0.07 |
Reduzate, % |
≤ 0.70 |
≤ 0.50 |
≤ 0.50 |
Lead, μg/g |
≤ 2 |
≤ 1 |
≤ 1 |
Solubility(1.0g , 10ml water) |
|
Colorless, almost clear |
Colorless, almost clear |
PH |
6.2 ~ 7.8 |
6.2 ~ 7.8 |
6.2 ~ 7.8 |
Arsenic salt, μg/g |
≤ 2 |
≤ 2 |
|
Properties: It is white or light yellow crystalline powder; easily soluble in water, insoluble in alcohols; has salty taste.
Use: As acid-base balance agent, water quality stabilizer, surface cleaners, cement admixture and food additive.
Specifications
Packing:25kg bag