Description

Name:Sodium Pyrosulfite;
Alias:disodiummetabisulfite; disodiumpyrosulphite; fertisilo; metabisulfitedesodium; Sodiummetabisufite; sodiummetabisulfite(na*-s2o5); sodiumpyrosulfite(na2s2o5); Sodium dissulfite; Sodium disulphite; Sodium pyrosulphite;
Properties: white or yellow crystalline powder or small crystalline, with a strong SO2 odor;
CAS:********4;
EINECS:********0;
Chemical formula:Na2S2O5;
Melting point: above **0℃ decomposition;
Molecular weight:**0.*9;
Density:1.*8;
PH value: 4.**4.6;
Solubility: dissolved in water and acid in aqueous solution; dissolved in glycerol and slightly dissolved in ethanol;
Product specifications: sulfur dioxide≥ *5%; Fe≤ 0.**5%; the water insoluble matter≤ 0.*5%;
Application:
1. Pharmaceuticals: production of chloroform, phenylpropane and Benzaldehyde;
2. Rubber: coagulant;
3. Printing and dyeing: dechlorination agent and cooking agent;
4. Tannery: leather treatment;
5. Chemical and pharmaceutical: reducing agent, sulfonated agent, wastewater treatment agent;
6. Photoreceptor industry: developer and so on;
7. Nonferrous metal: ore dressing agent.