焦亚硫酸钾 (CAS No.16731-55-8)
- 中文别名
- 二亚硫酸钾；偏亚硫酸钾；焦亚硫酸钾 (Potassium pyrosulfite)
- 英文名称
- Potassium metabisulfite
- 分子式
- K2S2O5
- 所属类别
- 食品添加剂
- 物化性质
- 白色或无色单斜晶系片状结晶，具有二氧化硫臭气。易溶于水，水溶液呈酸性；微溶于乙醇；不溶于乙醚。密度约2.34 g/cm³，熔点约190℃（分解）。具有较强的还原性，在空气中逐渐氧化为硫酸盐。干燥空气中稳定，在潮湿空气中易释放出二氧化硫。
- 技术参数
- 纯度≥99% 熔点约190℃（分解），密度约2.34 g/cm³ 易溶于水，水溶液呈酸性
English description（英文原文，共 1614 字符）
Product Name:Potassium metabisulfite
English Name:Potassium metabisulfite
CAS No.:16731-55-8
Aliases:Potassium pyrosulfite, Potassium disulfite
Molecular Formula:K2S2O5
Physical Properties:White or colorless monoclinic tabular crystals with a pungent odor of sulfur dioxide. Readily soluble in water, producing an acidic solution; slightly soluble in ethanol; insoluble in ether. Density approximately 2.34 g/cm³, melting point approximately 190°C (decomposes). Exhibits strong reducing properties and gradually oxidizes to sulfate in air. Stable in dry air, but releases sulfur dioxide in moist air.
Uses:In the food industry, it is used as a bleaching agent, antioxidant, and preservative to effectively inhibit enzymatic browning of fruits and vegetables, delay spoilage, and prevent microbial deterioration. In industrial applications, it serves as an analytical reagent, developer, and reducing agent, and is utilized in metal surface treatment and printing/dyeing processes for bleaching and decolorization. In chemical production, it is employed in the manufacture of dyes, pesticides, and household chemical products, acting as a reducing agent to improve product quality and yield. In the textile industry, it functions as a bleaching agent and reducing agent to enhance fabric whiteness and brightness while improving dyeing results.
Technical Specifications:
Purity ≥99%
Melting point approximately 190°C (decomposes), density approximately 2.34 g/cm³
Readily soluble in water, aqueous solution is acidic
Packaging: 25 kg per container
Releases sulfur dioxide upon decomposition in moist air
English Name:Potassium metabisulfite
CAS No.:16731-55-8
Aliases:Potassium pyrosulfite, Potassium disulfite
Molecular Formula:K2S2O5
Physical Properties:White or colorless monoclinic tabular crystals with a pungent odor of sulfur dioxide. Readily soluble in water, producing an acidic solution; slightly soluble in ethanol; insoluble in ether. Density approximately 2.34 g/cm³, melting point approximately 190°C (decomposes). Exhibits strong reducing properties and gradually oxidizes to sulfate in air. Stable in dry air, but releases sulfur dioxide in moist air.
Uses:In the food industry, it is used as a bleaching agent, antioxidant, and preservative to effectively inhibit enzymatic browning of fruits and vegetables, delay spoilage, and prevent microbial deterioration. In industrial applications, it serves as an analytical reagent, developer, and reducing agent, and is utilized in metal surface treatment and printing/dyeing processes for bleaching and decolorization. In chemical production, it is employed in the manufacture of dyes, pesticides, and household chemical products, acting as a reducing agent to improve product quality and yield. In the textile industry, it functions as a bleaching agent and reducing agent to enhance fabric whiteness and brightness while improving dyeing results.
Technical Specifications:
Purity ≥99%
Melting point approximately 190°C (decomposes), density approximately 2.34 g/cm³
Readily soluble in water, aqueous solution is acidic
Packaging: 25 kg per container
Releases sulfur dioxide upon decomposition in moist air
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常见问题
- 焦亚硫酸钾的 CAS 号是多少？
- 焦亚硫酸钾的 CAS 号是 16731-55-8。
- 焦亚硫酸钾的分子式和分子量是什么？
- 焦亚硫酸钾的分子式为 K2S2O5。
- 焦亚硫酸钾的英文名称是什么？
- 焦亚硫酸钾的英文名称为 Potassium metabisulfite。
- 焦亚硫酸钾还有哪些别名？
- 焦亚硫酸钾又称 二亚硫酸钾、偏亚硫酸钾、焦亚硫酸钾 (Potassium pyrosulfite)。
- 焦亚硫酸钾有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条焦亚硫酸钾供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 焦亚硫酸钾的供应商主要分布在哪些地区？
- 焦亚硫酸钾的供应商主要分布在 上海市（1 条） 等地。
- 焦亚硫酸钾有哪些级别可选？
- 平台上焦亚硫酸钾的供应级别包括 工业级。
- 焦亚硫酸钾的报价单位是什么？
- 焦亚硫酸钾的报价单位主要有 千克。
- 哪里可以查到焦亚硫酸钾的价格？
- 掌上化工焦亚硫酸钾产品页汇总了各供应商的最新报价与规格，地址：/chemicals/16731-55-8/。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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