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焦磷酸钠    SODIUM PYROPHOSPHATE

一、化学名：焦磷酸钠

二、分子式：Na₄P₂O₇ ,       Na₄P₂O₇·10H₂O

三、分子量：无水物265.90；十水物446.10

四、CAS：无水物 7722-88-5  十水物13472-36-1

五、性状：十水物为无色或白色结晶或白色结晶性粉末，无水物为白色粉末。溶于水，水溶液呈碱性，不溶于乙醇及其它有机溶剂。与Cu²⁺, Fe³⁺, Mn²⁺等金属离子络合能力很强。

六、用途：在食品工业中作为食品品质改良剂，PH调节剂，金属离子螯合剂，乳化分散剂，粘合剂等。用于肉类及水产加工，可提高持水性，使肉质鲜嫩，稳定天然色素，防止脂肪腐败，另外，也用于酵粉，乳酪制造等

七、包装：内衬聚乙烯塑料袋，外套塑料编织袋，每袋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。

1、Chemical Name: Sodium Pyrophosphate

2、Molecular Formula : Na₄P₂O_{7 ,} Na₄P₂O₇·10H₂O

3、Molecular Weight: Anhydrous 265.90, Decahydrate 446.10

4、CAS: Anhydrous 7722-88-5   Decahydrate 13472-36-1

5、Character: Decahydrate is colorless or white crystal or white crystalline powder. Anhydrous is white powder. It’s soluble in water, insoluble in ethanol or any other organic solvents. Aqueous solution is alkaline. Its’ chelating capacity of metal ions such as Cu²⁺, Fe³⁺, Mn²⁺ is very active.

6、Usage: It is used as quality improver, pH regulator, chelating agent, emulsifier and binder in food industry. For meat and aquatic products, it could improve water holding capacity to keep them tender; stabilize natural pigment and prevent fat from corrosion. It also can be used in production of baking powder and cheese.

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.