三偏磷酸钠  sodium trimetaphosphate for food
一、化学名：三偏磷酸钠
二、分子式：na3p3o9
三、分子量：305.89 
四、cas：7785-84-4
五、外观：白色结晶或结晶粉末，密度2.54g/cm3，溶于水。不溶于醇。
六、用途：食品工业中用作淀粉改性剂、果汁饮料防混剂、肉制品保水、黏合剂、分散剂、稳定剂，防止食品变色和维生素分解等。
七、包装：内衬聚乙烯塑料袋，外套塑料编织袋，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
fcc
总磷酸盐（以p2o5计）,w/%          ≥
content of general phosphates (as p2o5)
68.0-70.0
水不溶物,w/%                            ≤
water insolubles
0.1
砷（as）,mg/kg                           ≤
arsenic (as as)
3
重金属（以pb计）,mg/kg             ≤
hey metals (as pb)
10
氯化物（以cl计）,mg/kg              ≤
chloride(ascl)
50
ph值
ph value
6.0-9.0
 
1、chemical name: sodium trimetaphosphate for food
2、molecular formula : na3p3o9
3、molecular weight: 305.89
4、cas：7785-84-4
5、character: white crystal or crystalline powder, the density of 2.54 g/cm3, soluble in water. insoluble in alcohol.
6、usage: used for starch modifier in the food industry, fruit juice beverage + water, meat, adhesive, dispersing agent, stabilizer, prevent food color and vitamin decomposition, etc 
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 tooid damage. furthermore, it must be stored separately from poisonous substances.