459789-99-2

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100 Metric Ton	Negotiable

100 Metric Ton

Negotiable

459789-99-2 459789-99-2 seller in China 459789-99-2 factory in China

Product name: sodium metabisulfite / sodium metabisulphite
Molecular weight: 190.10
Specification: 25Kg woven bag
Quality guarantee period: 6 months

Quality Report
Testing Items	Specification	Results
Appearance	White off white powder	White powder
Solubility	Dissolved in methanol,acetone and ethyl acetate;solubility in water is pH dependent,slightly soluble at low pH and soluble at high pH.	Dissolved in methanol,acetone and ethyl acetate;slightly soluble at pH 2.0 and soluble at pH 10.0
Melting Range	104℃~108℃	105℃~107℃
Identification	1. Consistent with infrared spectra obey standard cholic acid. 2. The content determination method in retention time and obey cholic acid standard agreement.	Complies
Related substances	CDCA≦1.0% αβ,βα,ββisomer≦0.15% MAX impurity≦0.10% Total impurities≦1.5%	CDCA:0.12% Αβ:0.06%,βα:0.13%,ββ:none MAXimpurity:0.07% Total impurities:0.4%
Acidity	pH4.5~6.0	pH5.2
Loss on drying	≦2.0	0.6%
Residue on ignition	≦0.1%	0.02%
Heavy Metals	≦20ppm	Complies
Assay(HPLC)	≧98.0%	99%
Conclusion	Complies