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Monosodium Phosphate

Update: 2013/10/14 View:
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Introduction
 

Chemical Name:

Monosodium Phosphate  Sodium Dihydrogen phosphate

Molecular Formula:

NaH2PO4, NaH2PO4·H2O, NaH2PO4·2H2O

Molecular Weight:

anhydrous: 120.01; Monohydrate: 138.01; Dihydrate: 156.01

CAS:

anhydrous: 7558-80-7; Monohydrate: 10049-21-5; Dihydrate: 13472-35-0

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 crystal water and convert to monohydrate salt. When heated to 100, it will lose crystal water and change to anhydrous substances, which will become sodium metaphosphate if continue to be heated.

Uses:

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.

Packing:

It is packed with polyethylene bag as liner and a compound paper-plastic woven bag as the outer layer. The net weight of each bag is 25kg.

Quality index:

Quality index

Specification

GB25564-2010

HG2919-2000

FCC1996

Assay%

Content (NaH2PO4)

98.0-103.0

98.0-103.0

98.0-103.0

PH value

PH-Value

4.1-4.7

4.2-4.6

--

Water insoluble matter ≤%

Insoluble In Water

0.2

0.20

0.20

Heavy Metal≤%

Heavy Metal(Pb)

0.001

0.001

0.001

Pb≤%

Pb

0.0004

---

---

As ≤%

As

0.0003

0.0003

0.0003??

Fluoride(F)≤%

Fluorides (F)

0.005

0.005

0.005

Loss on Dry%

NaH2PO4

2.0

2.0

2.0

NaH2PO4·H2O

10.0-15.0

10.0-15.0

10.0-15.0

NaH2PO4·2H2O

20.0-25.0

20.0-25.0

20.0-25.0

Phosphorus pentoxide%

NaH2PO4

44.6

44.6

58.0-60.95
(NaH2PO4)

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