焦磷酸鈉    SODIUM PYROPHOSPHATE

一、化學名：焦磷酸鈉

二、分子式：Na₄P₂O₇ ,       Na₄P₂O₇·10H₂O

三、分子量：無水物265.90；十水物446.10

四、CAS：無水物 7722-88-5  十水物13472-36-1

五、性狀：十水物為無色或白色結晶或白色結晶性粉末，無水物為白色粉末。溶于水，水溶液呈堿性，不溶于乙醇及其它有機溶劑。與Cu²⁺, Fe³⁺, Mn²⁺等金屬離子絡合能力很強。

六、用途：在食品工業(yè)中作為食品品質改良劑，PH調節(jié)劑，金屬離子螯合劑，乳化分散劑，粘合劑等。用于肉類及水產加工，可提高持水性，使肉質鮮嫩，穩(wěn)定天然色素，防止脂肪腐敗，另外，也用于酵粉，乳酪制造等

七、包裝：內襯聚乙烯塑料袋，外套塑料編織袋，每袋25Kg。

八、貯存與運輸：本品應貯存在干燥通風清潔的庫房中，裝載運輸時要輕裝輕放，防止包裝破損，防止受潮、受熱，運輸過程中防止雨淋受潮，應與有毒物品隔離。

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.