Product name :Disodium
Phosphate
Chemical Formula: Na2HPO4·12H2O
Properties: colorless monoclinic crystal or white powder,
specific gravity: 1.52; soluble in water, insoluble in alcohol
and its aqueous solution is of slightly alkaline. PH(1% aqueous
solution): 8.8-9.2; Melt and loss five crystal water at 35.1°C,
easy weathering in air, loss about five crystal water to form
heptahydrate when stored in air under normal temperature,
loss all crystal water to form anhydrous product when heated
to 100°C, decompose to sodium pyrophosphate at 250°C,
to produce white powdery dihydrated disodium hydrogen phosphate
if carefully dried under the temperature lower than 34°C
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