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Compound | Sodium Dihydrogen Phosphate Monohydrate | ||||
---|---|---|---|---|---|
CAS No. | 10049-21-5 | Catalog No. | XMZX-W634 | Brand | |
Purity | 99% | Packing | 25kg/DRUMS | Grade | |
Lead Time | 3Day (s) | Origin | Loading Port | China,Xiamen,Siming District |
Boiling Point | 158ºC at 760mmHg |
---|---|
Appearance & Physical State | white crystals or crystalline powder |
Density | 2.04 g/cm3 |
Melting Point | 100ºC |
Chemical Properties Anhydrous salt: white crystalline powder; slightly hygroscopic; forms sodium acid pyrophosphate, Na2H2P2O7 on heating above 225°C and sodium metaphosphate (NaPO3)n at about 350 to 400°C; very soluble in water, aqueous solution acidic.
Monohydrate: white orthorhombic crystals or granules; density 2.04 g/cm3 ; loses its water of crystallization at 100°C; very soluble in water, pH of 1% solution 4.5; insoluble in alcohol.
Dihydrate: large transparent crystals; orthorhombic bisphenoidal structure; density 1.915 g/cm 3 ; decomposes at 60°C; very soluble in water; insoluble in alcohol.
Chemical Properties The USP 32 states that monobasic sodium phosphate contains one or two molecules of water of hydration or is anhydrous.
The hydrated forms of monobasic sodium phosphate occur as odorless, colorless or white, slightly deliquescent crystals. The anhydrous form occurs as a white crystalline powder or granules.
Uses Excipient.
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