酸式焦磷酸钠  SODIUM ACID PYROPHOSPHATE

 

一、化学名:焦磷酸二氢二钠,酸式焦磷酸钠

二、分子式:Na2H2P2O7

三、分子量:221.94

四、CAS:7758-16-9

五、性状白色结晶性粉末,相对密度1.862。易溶于水,水溶液呈碱性。不溶于乙醇。可与Fe2+, Mg2+形成螯合物。

六、用途:在食品工业中作缓冲剂、膨松剂、螯合剂、稳定剂、乳化剂、色泽改进剂。

七、包装:内衬聚乙烯塑料袋,外套复合塑料编织袋,每袋净重25kg。

八、贮存与运输:本品应贮存在干燥通风清洁的库房中,装载运输时要轻装轻放,防止包装破损,防止受潮、受热,运输过程中防止雨淋受潮,应与有毒物品隔离。

 

质量指标 Specification GB25557-2010 FCC VII
焦磷酸二氢二钠(Na2H2P2O7),w/% Assay(Na2H2P2O7),w/% 93.0-100.5 93.0-100.5
砷( As),mg/kg               Arsenic(As),mg/kg         3 3
氟化物(以F计),mg/kg        Fluoride(F),mg/kg         50 50
重金属(以Pb计),mg/kg       Heavy Metals (Pb),mg/kg    10 ————
水不溶物,w/%            ≤ Insoluble Substances , w/% ≤ 1.0 1.0
铅(Pb),mg/kg                Lead(Pb),mg/kg           2 2
pH(10g/L 溶液) pH Value 4.0±0.5 ————

1、Chemical Name: Sodium Acid Pyrophosphate

2、Molecular Formula: Na2H2P2O7

3、Molecular Weight: 221.94

4、CAS: 7758-16-9

5、Character: It is white crystalline powder. Relative density is 1.862. It’s soluble in water, insoluble in ethanol. Aqueous solution is alkaline. It reacts with Fe2+ and Mg2+ to form chelates.

6、Usage: In food  industry, it is used as buffering agent, swelling agent, chelating agent, stabilizer, emulsifier and color improver.

7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.

8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.

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