焦磷酸二氢二钠 (CAS No.7758-16-9)
- 物化性质
- 白色单斜晶系结晶性粉末或熔融状固体；相对密度1.86；溶于水，不溶于乙醇；水溶液与稀无机酸加热水解成磷酸；稍有吸湿性，吸水后形成六水合物；加热至220℃以上分解生成偏磷酸钠。
- 技术参数
- 含量（以Na2H2P2O7计）≥95.0% 水不溶物≤0.2% pH值（10 g/L水溶液）3.5～4.5 干燥减量≤0.5% 砷（As）≤3 mg/kg；重金属（以Pb计）≤10 mg/kg
English description（英文原文，共 1185 字符）
Product Name:Disodium dihydrogen pyrophosphate
English Name:Disodium dihydrogen pyrophosphate
CAS No.:7758-16-9
Aliases:Sodium acid pyrophosphate, Acid sodium pyrophosphate, SAPP
Molecular Formula:Na2H2P2O7
Physical Properties:White monoclinic crystalline powder or molten solid; relative density 1.86; soluble in water, insoluble in ethanol; the aqueous solution hydrolyzes to phosphoric acid when heated with dilute inorganic acid; slightly hygroscopic, forms hexahydrate after absorbing water; decomposes above 220 °C to form sodium metaphosphate.
Uses:Used as a food quality improver, leavening agent and water retention agent in bread, biscuits and other baked goods, as well as meat, aquatic products and instant noodles. It chelates metal ions and increases ionic strength, improving the binding and water-holding capacity of food; also used as the acidic component of synthetic leavening agents and as a chelating agent in combination with other polyphosphates.
Technical Specifications:
Assay (as Na2H2P2O7) ≥ 95.0%
Water-insoluble substances ≤ 0.2%
pH (10 g/L aqueous solution) 3.5–4.5
Loss on drying ≤ 0.5%
Arsenic (As) ≤ 3 mg/kg; heavy metals (as Pb) ≤ 10 mg/kg
English Name:Disodium dihydrogen pyrophosphate
CAS No.:7758-16-9
Aliases:Sodium acid pyrophosphate, Acid sodium pyrophosphate, SAPP
Molecular Formula:Na2H2P2O7
Physical Properties:White monoclinic crystalline powder or molten solid; relative density 1.86; soluble in water, insoluble in ethanol; the aqueous solution hydrolyzes to phosphoric acid when heated with dilute inorganic acid; slightly hygroscopic, forms hexahydrate after absorbing water; decomposes above 220 °C to form sodium metaphosphate.
Uses:Used as a food quality improver, leavening agent and water retention agent in bread, biscuits and other baked goods, as well as meat, aquatic products and instant noodles. It chelates metal ions and increases ionic strength, improving the binding and water-holding capacity of food; also used as the acidic component of synthetic leavening agents and as a chelating agent in combination with other polyphosphates.
Technical Specifications:
Assay (as Na2H2P2O7) ≥ 95.0%
Water-insoluble substances ≤ 0.2%
pH (10 g/L aqueous solution) 3.5–4.5
Loss on drying ≤ 0.5%
Arsenic (As) ≤ 3 mg/kg; heavy metals (as Pb) ≤ 10 mg/kg
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常见问题
- 焦磷酸二氢二钠的 CAS 号是多少？
- 焦磷酸二氢二钠的 CAS 号是 7758-16-9。
- 焦磷酸二氢二钠的分子式和分子量是什么？
- 焦磷酸二氢二钠的分子式为 Na2H2P2O7。
- 焦磷酸二氢二钠的英文名称是什么？
- 焦磷酸二氢二钠的英文名称为 Disodium dihydrogen pyrophosphate。
- 焦磷酸二氢二钠还有哪些别名？
- 焦磷酸二氢二钠又称 酸式焦磷酸钠。
- 焦磷酸二氢二钠有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条焦磷酸二氢二钠供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
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- 焦磷酸二氢二钠的供应商主要分布在 上海市（1 条） 等地。
- 焦磷酸二氢二钠有哪些级别可选？
- 平台上焦磷酸二氢二钠的供应级别包括 工业级。
- 焦磷酸二氢二钠的报价单位是什么？
- 焦磷酸二氢二钠的报价单位主要有 千克。
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