焦亚硫酸钠 (CAS No.7681-57-4)
- 物化性质
- 白色或微黄色结晶粉末,有二氧化硫气味,密度1.48 g/cm3,熔点150℃(分解)。溶于水,水溶液呈酸性;可溶于甘油,微溶于乙醇。暴露于空气中易氧化为硫酸钠,受潮易分解,具有还原性。
- 技术参数
- 纯度≥99%
- 熔点
- 150℃(分解)
- 密度
- 1.48 g/cm3 水溶液呈酸性
English description(英文原文,共 1019 字符)
Product Name:Sodium pyrosulfite
English Name:Sodium pyrosulfite
CAS No.:7681-57-4
Aliases:Sodium metabisulfite, Sodium disulfite, Disodium pyrosulfite
Molecular Formula:Na2S2O5
Physical Properties:White or slightly yellow crystalline powder with sulfur dioxide odor. Density 1.48 g/cm3, melting point 150°C (decomposition). Soluble in water giving an acidic solution; soluble in glycerol, slightly soluble in ethanol. It is readily oxidized to sodium sulfate in air and decomposes when moistened.
Uses:Used as a reducing agent, bleaching agent, preservative, and dechlorinating agent. In the food industry, it is applied for fresh-keeping, antioxidant protection of fruits and vegetables, and antiseptic purposes in brewing. In industrial production, it serves as a reducing agent in polymer synthesis, a sulfonating agent, and an oxygen scavenger in oilfield fluids.
Technical Specifications:
Purity ≥99%
Packing: 25kg/bag
Melting point: 150°C (decomposition)
Density: 1.48 g/cm3
Aqueous solution is acidic
English Name:Sodium pyrosulfite
CAS No.:7681-57-4
Aliases:Sodium metabisulfite, Sodium disulfite, Disodium pyrosulfite
Molecular Formula:Na2S2O5
Physical Properties:White or slightly yellow crystalline powder with sulfur dioxide odor. Density 1.48 g/cm3, melting point 150°C (decomposition). Soluble in water giving an acidic solution; soluble in glycerol, slightly soluble in ethanol. It is readily oxidized to sodium sulfate in air and decomposes when moistened.
Uses:Used as a reducing agent, bleaching agent, preservative, and dechlorinating agent. In the food industry, it is applied for fresh-keeping, antioxidant protection of fruits and vegetables, and antiseptic purposes in brewing. In industrial production, it serves as a reducing agent in polymer synthesis, a sulfonating agent, and an oxygen scavenger in oilfield fluids.
Technical Specifications:
Purity ≥99%
Packing: 25kg/bag
Melting point: 150°C (decomposition)
Density: 1.48 g/cm3
Aqueous solution is acidic
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常见问题
- 焦亚硫酸钠的 CAS 号是多少?
- 焦亚硫酸钠的 CAS 号是 7681-57-4。
- 焦亚硫酸钠的分子式和分子量是什么?
- 焦亚硫酸钠的分子式为 Na2S2O5。
- 焦亚硫酸钠的英文名称是什么?
- 焦亚硫酸钠的英文名称为 Sodium pyrosulfite。
- 焦亚硫酸钠还有哪些别名?
- 焦亚硫酸钠又称 偏重亚硫酸钠、偏二亚硫酸钠、二硫五氧酸钠、重硫氧。
- 焦亚硫酸钠有哪些供应商和生产厂家?
- 掌上化工当前收录 1 条焦亚硫酸钠供应报价,来自 1 家供应商,可按地区、纯度、级别筛选对比。
- 焦亚硫酸钠的供应商主要分布在哪些地区?
- 焦亚硫酸钠的供应商主要分布在 上海市(1 条) 等地。
- 焦亚硫酸钠有哪些级别可选?
- 平台上焦亚硫酸钠的供应级别包括 工业级。
- 焦亚硫酸钠的报价单位是什么?
- 焦亚硫酸钠的报价单位主要有 千克。
- 哪里可以查到焦亚硫酸钠的价格?
- 掌上化工焦亚硫酸钠产品页汇总了各供应商的最新报价与规格,地址:/chemicals/7681-57-4/。部分供应商价格为电议,可通过页面上的询价功能直接获取。
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