China High Quality Sodium Hydrogen Sulfite CAS 7631-90-5 Nahso3 White Powder, Find details about China Sodium Hydrogen Sulfite, Nahso3 from High Quality Sodium Hydrogen Sulfite CAS 7631-90-5 Nahso3 White Powder
Products Name:sodium hydrogen sulfite
Molecular Form:NaHSO3
Molecular Weight:104.06
CAS NO.:7631-90-5
EINECS NO.:231-548-0
H.S Code:2832100000.
sodium hydrogen sulfite is white monoclinic crystalline powder with sulfur dioxide odor; relative density: 1.48; very easily soluble in water; can be decomposed when heated; slightly soluble in ethanol; aqueous solution is acidic; has strong reducing property; can be oxidized in the air or loose sulfur dioxide.
Specification:
Component | Range | Typical |
Purity ( NaSO3 % ) | ≥ 99.0 % | 99.4% |
SO2 | 64 - 67% | 65.5% |
Fe | ≤ 0.004% | 0.0025% |
Chloride ( as CI ) | ≤ 0.05% | 0.023% |
Heavy metal ( Pb ) | ≤ 0.001% | < 0.0005% |
As | ≤ 0.0002% | < 0.0001% |
PH | 4.0 - 5.0 | 4.5 |
Quality Standard | HG/T 3814-2006 |