sodium dihydrogen phosphate

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sodium dihydrogen phosphate
Posting date : Apr 15, 2010
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31-
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sodium dihydrogen phosphate Molecular Formula: NaH2PO4 · 2H2O Molecular Weight: 156.01 Properties: Clourless column crystal, odourless,slightly deliquescence relative density 2.04, melting point 60 , easily soluble in water, insoluble in ethahol. When heated to less 100 , soluble in crystalline water; when heated to 100 , lossing crystalline water, going on heating and becoming NaPO3. Specifications: Item HG2919-2000 FCC1996 Assay(NaH2PO4 ),% 98.0-103.0 98.0-103.0 pH-value (10g/L solution) 4.2-4.6 -- Insol. in water, ≤% 0.2 0.2 Heavy Metal(Pb), ≤% 0.001 10mg/kg As, ≤% 0.0003 3mg/kg Chlorides (F), ≤% 0.005 0.005 Drying Loss NaH2PO4 ≤% 2.0 2.0 NaH2PO4 .H2O,% 10.0-15.0 10.0-15.0 NaH2PO4 . 2H2O,% 20.0-25.0 20.0-25.0

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