Product name: Sodium bisulfite
Other name: Sodium Hydrogen Sulfite
Shape: White crystalline powder
Features: White or light yellow crystal powder, a strong smell of sulfur dioxide, relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity, and its solubility will become large while raising the temperature and is less to dissolve in ethanol. The smell of sulfur dioxide. Unpleasant taste, part of the sulfur dioxide is exposed to the air and oxidized to sulfate. Soluble in 3.5 parts of cold water, boiling water of about 2 parts, about 70 parts of ethanol. Melting decomposition. Relative density 1.48. Irritant, product often contain a variety of proportional emphasis on sodium sulfite(Na2S2O5).
Application: Used for cotton fabric and organic bleaching; used as a reducing agent in dyeing, papermaking, tanning, chemical synthesis and other industries; the pharmaceutical industry for the production of intermediates Analginum and aminopyrine; edible products used as bleching agents, preservatives, antioxidants; treatment of wastewater containing chormium, and used as a plating additive.
Packing: 25kg bags, 27MT per 20’fcl.
Items tested | Standard( HG/T 38142006) | Analytical result |
Purity (NaHSO3) | 99.0% | 99.8% |
SO2 | 64-67% | 65.1% |
Water insoluble | 0.03% max | 0.025% |
Chloride(Cl) | 0.05% max | 0.038% |
Iron(Fe) | 0.004% max | 0.002% |
Heavy metal( as Pb) | 0.001% max | ∠0.001% |
Arsenic (As) | 0.0002% max | ∠0.0002% |
PH Value | 4.0-5.0 | 4.6 |