polyphosphoric acid Cas:8017-16-1

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polyphosphoric acid

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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