[Member (365WT)]answers [Chinese ] | Time :2016-12-11 | White crystalline powder. The smell of sulfur dioxide, melting point decomposition. Soluble in water, slightly soluble in alcohol, ether. Exposure to air easily oxidized. The aqueous solution (1%) had a pH of 4.0 to 5.5. Strong reduction.
Density: 1.48
HG / T 3-1291-80 Chemical Analysis (AR) (CP) Content (SO2) Assay,% 58.5-65.0 58.5-65.0 Clarity test Water insoluble matter In water,% ≤ 0.005 0.01 Chloride (Cl),% ≤ 0.01 0.02 Arsenic (As) Arsenic,% ≤ 0.0001 0.0002 Heavy metals (in terms of Pb) Heavy metals,% ≤ 0.001 0.002 Iron (Fe) Iron,% ≤ 0.001 0.002
ACS level Project name ACS Grade Assay ≥58.5% Insoluble matter ≤0.005% Chloride (Cl) ≤ 0.02% Heavy metals (as Pb) ≤0.001% Iron (Fe) Iron (Fe) ≤0.002%
40% solution:
Ultra - pure grade (Ultrapure) A clear, yellowish liquid Assay assay 38-40% Iron (Fe) ppm 5 Chloride (Cl) ppm 20 PH 3.9-4.4 Na2SO3% - Na2SO4% - Density (kg / l) 1.32-1.35
Sealed dry and cool place to save. Product Use Reducing agents, preservatives, disinfectants, bleach. For organic bleaching and food preservation, in the dye, paper, leather, chemical synthesis and other industries as a reducing agent, brewing, beverage industry as a fungicide. For the production of saccharin, spices and hydroxylamine hydrochloride. |
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