磷酸二氢钠二水

磷酸二氢钠    MONOSODIUM PHOSPHATE

一、化学名称：磷酸二氢钠

二、分子式：NaH₂PO₄，NaH₂PO₄·H₂O，NaH₂PO₄·2H₂O

三、分子量：无水物：120.01；一水物：138.01；二水物：156.01

四、CAS：无水物：7558-80-7；一水物：10049-21-5；二水物：13472-35-0

五、性状：无色柱状结晶。无臭。稍有潮解性。相对密度2.04。熔点60℃。易溶于水。不溶于乙醇。100℃以下加热，可溶于结晶水形成一水盐。加热至100℃失去结晶水而成无水物，继续加热则变为偏磷酸钠。

六、用途：缓冲剂、品质改良剂、乳化剂、营养增补剂、抗氧化增效剂、盐水穿透助剂、糖澄清剂、稳定剂、凝胶剂、禽类烫毛剂。

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。

1. Chemical Name: Monosodium Phosphate

2. Molecular Formula: NaH₂PO₄，NaH₂PO₄·H₂O，NaH₂PO₄·2H₂O

3. Molecular Weight: Anhydrous: 120.01; Monohydrate: 138.01; Dihydrate: 156.01

4. CAS: Anhydrous: 7558-80-7; Monohydrate: 10049-21-7; Dihydrate: 13472-35-0

5. Character: It is colorless column crystal, odorless, slightly deliquescence. The relative density is 2.04 and melting point is 60℃. It is easily soluble in water but insoluble in ethanol. If heated below 100℃, it can dissolve in its’ own crystal water and convert to monohydrate salt. When heated up to 100℃, it’ll lose crystal water and change to anhydrous substances, which will become Sodium Metaphosphate if it continues to be heated.

6. Usage: In food industry, it is used as buffering, character improving agent, emulsifier, nutrition supplement, antioxidant additive, brine penetrable agent, sugar clarifier, stabilizer, coagulant and fowl scalding agent. 

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.