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；十水合物446.10
四、CAS：13472-36-1
五、性能：无色透明结晶或白色结晶粉末。相对密度2.534，熔点880℃,易溶于水，不溶于醇。在干燥空气中风化，在100℃失去结晶水。在空气中易吸收水分而潮解。
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：应贮在干燥、通风清洁的库房中，轻装轻放，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离堆放。
质量指标 | Specification | GB25557-2010 |
含量 | 以Na4P2O7计， w/% | Content（Na4P2O7） | 96.5~100.5 |
以Na4P2O7·10H2O计，w/%≥ | Content（Na4P2O7·10H2O） | 98.0 |
水不溶物，w/% ≤ | Water Insolubles | 0.2 |
pH值（10g/L） | PH Value | 9.9~10.7 |
正磷酸盐 | Orthophosphate | 通过试验 |
砷（以As计），mg/kg ≤ | Arsenic (As As) | 3 |
重金属（以Pb计）， mg/kg ≤ | Heavy Metal (As Pb) | 10 |
铅(Pb), mg/kg ≤ | Lead (as Pb) | 4 |
氟化物（以F计）,mg/kg ≤ | Fluoride (As F) | 50 |
灼烧失重, w/% | 无水物 ≤ | Loss on Drying | anhydrous | 0.5 |
十水合物 | decahydrate | 38.0-42.0 |
1、Chemical Name: SODIUM PYROPHOSPHATE
2、Molecular Formula : Na4P2O7 , Na4P2O7·10H2O
3、Molecular Weight: Anhydrous 265.90, decahydrate 446.10
4、CAS: 13472-36-1
5、Character: It’s colorless transparent crystal or white crystalline powder. The relative density is 2.534 and melting point is 880℃. It’s easily soluble in water and insoluble in ethanol. It will weather in dry air and lose crystal water in 100℃. It easily absorbs water to deliquesce in air.
6、Usage: It is used as quality improver, regulator of PH value, chelating agent, emulsifier and binder in food industry. It also can be used in the processing of baking powder and cheese.
7、Packing: It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilate warehouse, kept away from water and moisture during transport, unload with care as to avoid being damaged. Furthermore, it must be stored separately from poisonous substances.
