Chemicals

polyphosphoric acid Cas:8017-16-1

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Synonyms：

polyphosphoric acid

Polyphosphoric Acid

Phosphonic acid

molecular formula: H3O3P

Molecular weight: 81.99580

Physical Properties:

PPA is colorless transparent viscous liquid, hygroscopic, non-crystallizable,corrosive, water soluble into orthophosphate acid. Acidity is weaker than nitric acid and sulfuric acid. Non-oxidicability, could cause burns when meeting H vesicant. Specific gravity is 2.1g/cm3. Normal boiling point is 856℃, keeping hard glassy block upon lowtemperature and liquid when heating up to 50～60℃. Relative density is 1.987(P2O5 80.0%); 2.052(P2O5 84.0%); 2.084(P2O5 86.0%). Hazard label 20 (corrosives acidic properties). High viscidity, hard to stir or pour under normal temperature, and easily to operate when temperature is above 60℃, omit heat when solublein water, should be under ice-bath station when making dilution.

Specification:

Items	Standard(Tech Grade)	Result
Appearance	Colorless transparent viscous liquid	Qualified
Main content	≥115%	115.50%
P2O5%	≥83%	83.30%
Sulfate	≤0.01	0.0095
Viscosity (CP)	35000	35000
chroma (Heep)	≤50	46
Heave metal (Pb) %	≤0.01	0.007
Fe%	≤0.01	0.008
As%	≤0.01	0.008
Conclusion	Qualified

Application:

PPA is widely used on medicine, parfum, leather, chemical industry, compounds cyclizing agent, acidifying agent, dehydrating agent in organic synthesis. And used as substitute for orthophosphate.

Package and Storage:

（Ⅲ）plastic or glass bottles outer wooden case, inner for non-inflammable materials. Storage in dry and ventilated place. It is strictly forbidden to store and transport together with alkaline, poison and corrosive
products.

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