Product Name
Sodium dihydrogenorthophosphate
Category
Metal & Ceramic Materials
Description
DryPowder; DryPowder, PelletsLargeCrystals; Liquid; PelletsLargeCrystals;A white odourless, slightly deliquescent powder, crystals or granules
Synonyms
SODIUM DIHYDROGEN PHOSPHATE-16O4;acidsodiumphosphate;monosodiumdihydrogenorthophosphate;monosodiumhydrogenphosphate;monosodiumphosphate(sodiumdihydrogen;monosodiumphosphate(sodiumdihydrogenphosphate);monosorbxp-4;phosphatemonobasiquedesodium
IUPAC Name
sodium;dihydrogen phosphate
Molecular Weight
119.977g/mol
Molecular Formula
Anhydrous: NaH2PO4; Monohydrate: NaH2PO4? H₂O; Dihydrate: NaH2PO4? 2H₂O;NaH2PO4;H2NaO4P
Canonical SMILES
OP(=O)(O)[O-].[Na+]
InChI
InChI=1S/Na.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
InChI Key
AJPJDKMHJJGVTQ-UHFFFAOYSA-M
Melting Point
Decomposes at 75;60 °C;200 °C (decomposes)
Solubility
Freely soluble in water. Insoluble in ethanol or ether;487 mg/mL at 25 °C;In water, 85 g/100 mL
Color/Form
Colorless, monoclinic crystals;White crystalline powder
Covalently-Bonded Unit Count
2
Decomposition
When heated to decomp ... emits toxic fumes of phosphoxides and sodium oxide.
EC Number
231-449-2;231-449-2;231-558-5;618-243-1
Monoisotopic Mass
119.95884g/mol
Other Experimental
White, hygroscopic crystals. Decomp at 100 °C. Solubility: 94.9 g/100 g water at 25 °C. Insoluble in ethanol. /Sodium dihydrogen phosphate monohydrate/;SOLN PRODUCES EFFERVESCENCE WITH SODIUM CARBONATE; NEUTRAL, OR PRACTICALLY NEUTRAL, TO METHYL ORANGE TEST SOLN /SODIUM DIHYDROGEN PHOSPHATE MONOHYDRATE/;Slightly hygroscopic ... Has acid reaction; forms sodium acid pyrophosphate at 225-250 °C and sodium metaphosphate at 350-400 °C;Large, transparent crystals. ... density 2.040. Very soluble in water; insoluble in alcohol; pH of 1% solution 4.4-4.5 /Sodium dihydrogen phosphate monohydrate/;Colorless, orthorhombic crystals; MP: 60 °C (decomposes); density: 1.91 g/cu cm; 94.9 g/100 g water at 25 °C. Insoluble in ethanol /Sodium dihydrogen phosphate dihydrate/;Orthorhombic bisphenoidal colorless crystals, mp 60 °C, specific gravity 1.915. At room temp crystallizes with 2H₂O. /Sodium dihydrogen phosphate dihydrate/;White, odorless, slightly deliquescent crystals or granules. At 100 °C loses all its water; when ignited it converts into metaphosphate. Freely soluble in water; practically insoluble in alcohol. The aqueous soln is acid. pH of 0.1 molar aq soln at 25 °C: 4.5. /Sodium dihydrogen phosphate monohydrate/;Reacts slowly on exposure to water (moisture) with (some) metals. On burning: release of toxic and corrosive gases/vapours (phosphorus oxides). Reacts violently with (some) acids/bases.
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