Sodium Metabisulfite
1. Basic indicators
Molecular formula: | Na2S2O5 |
Cas No.: | 7681-57-4 |
Appearance: | White or light yellow crystalline powder |
H.S Code: | 2832100000 |
2. Technical specifications
Item | Index |
Na2S2O5 | 97% min |
Fe | 0.003% max |
Water insoluble matter | 0.04% max |
AS | 0.0001% max |
PB | 0.001% max |
3. Application
Mordant of printing and dyeing;
Dechlorinate of textile after bleaching;
Sulphonated agent and reducer of chemical industry and pharmacy;
Bleach of paper pulp, bamboo and timber; Treatment agent of waste water;
Rubber solidifying agent;
Perfume industryis served as hydrocarbon perfume aldehyde;
The sensitize industry is served as the developing agent, reductant, the protection of fixing bath dose, and so on.
4. Packing and storage
Packing: Double coated plastic woven bag, 25kg net; 500kg / 1000kg jumbo bags.
Storage: Dry, ventilated, moisture proof.
焦亚硫酸钠
别名: 偏重亚硫酸钠,重硫氧。
英文名:sodium metabisulfite, sodium pyrosulfite.
分子式:Na2S2O5
分子量:190.10
性状:
焦亚硫酸钠为白色或黄色结晶粉末或小结晶,带有强烈的SO2气味,比重 1.4,溶于水,水溶液呈酸性,与强酸接触则放出SO2而生成相应的盐类, 久置空气中,则氧化成Na2S2O4,故该产品不能久存。高于1500C,即分解出SO2。
工业级:
项目 | 优级品 | 一级品 |
含量(Na2S2O5)% ≥ | 98.0 | 95.0 |
铁(Fe)% ≤ | 0.005 | 0.01 |
水不溶物 % ≤ | 0.05 | 0.05 |
砷(As)% ≤ | 0.0001 |
|
用途:
印染媒染剂,织物漂后脱氯剂;医药用还原剂和磺化剂;竹、木、纸纤维漂白剂;有色金属选矿剂;废水处理剂;橡胶凝固剂.
包装:外用聚丙烯编织袋,内衬聚乙烯塑料袋。
净重:25千克/袋 50千克/袋 1000千克/袋