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：无色结晶或白色结晶性粉末。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包装，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 VII |
||
|
含量（以干基计），w/% |
Content (On Dry Basis),w/% |
98.0-103.0 |
98-103.0 |
||
|
PH（10g/L溶液，25℃） |
PH(10g/L,25℃) |
4.1-4.7 |
———— |
||
|
水不溶物，w/% ≤ |
Insoluble Substances,w/% ≤ |
0.2 |
0.2 |
||
|
重金属（以Pb计），mg/kg ≤ |
Heavy Metal(As Pb),mg/kg ≤ |
10 |
———— |
||
|
铅（Pb），mg/kg ≤ |
Lead(Pb)，mg/kg ≤ |
4 |
4 |
||
|
砷（As），mg/kg ≤ |
Arsenic(As)，mg/kg ≤ |
3 |
3 |
||
|
氟化物（以F计），mg/kg ≤ |
Fluorides (As F)，mg/kg ≤ |
50 |
50 |
||
|
干燥失重，w/%
|
NaH2PO4 ≤ |
Loss On Drying，w/% |
NaH2PO4 ≤ |
2.0 |
2.0 |
|
NaH2PO4·H2O |
NaH2PO4·H2O |
10.0-15.0 |
10.0-15.0 |
||
|
NaH2PO4·2H2O |
NaH2PO4·2H2O |
20.0-25.0 |
20.0-25.0 |
||
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:10049-21-5 ; Dihydrate:13472-35-0
5、Character: It is colorless column crystal, odorless, slightly deliquescence. The relative density is 2.04
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 convert to monohydrate salt. When heated up to 100℃, it’ll lose
crystal water 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,acter improving agent, emulsifier, nutrition supplement, antioxidant additive, brine penetrable agent, sugar clarifier, stabilizer, coagulant fowl scalding agent.
7、Packing: It is packed with polyethylene bag as inner layer a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage Transport: It should be stored in a dry ventilative warehouse, kept away from heat moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
