|
质量指标
|
Specification
|
GB 25564-2010
|
|
含量 %
|
Content (NaH2PO4)
|
98.0-103.0
|
|
PH 值
|
PH-Value
|
4.1-4.7
|
|
水不溶物 ≤%
|
Insoluble In Water
|
0.2
|
|
重金属 ≤%
|
Heavy Metal(Pb)
|
0.001
|
|
铅 ≤%
|
Pb
|
0.0004
|
|
砷(As) ≤%
|
As
|
0.0003
|
|
氟化物(F) ≤%
|
Fluorides (F)
|
0.005
|
|
干燥失重 %
|
Loss
On
Drying
|
NaH2PO4
|
2.0
|
|
NaH2PO4·H2O
|
10.0-15.0
|
|
NaH2PO4·2H2O
|
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: 10049-21-7; Dihydrate: 13472-35-0
5. Character: It is colourless 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 ethahol. If heated below 100℃, it can dissolve in crystal water and convert to monohydrate salt. When heated to 100℃, it will lose crystal water and change its anhydrous substances, which will become sodium metaphosphate if it’s continue 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, fowl scalding agent.
7. Packing: It is packed with polyethylene bag as liner 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 ventilating warehouse.
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