Physical Appearce : Colorless and transparent and stickly of Liquid
Specification:
Specifications of Polyphosphoric Acid
No.
Items of Analysis
Unit
95% PPA
105% PPA
115% PPA
1
PPA
%
≥95.0
≥105.0
≥115.0
2
P2O5
%
≥68.5
≥76.0
≥83.3
3
Chloride as Cl
%
≤0.0005
≤0.0005
≤0.0005
4
SO4
%
≤0.005
≤0.005
≤0.005
5
Iron as Fe
%
≤0.002
≤0.002
≤0.002
6
Arsenic as As
%
≤0.0001
≤0.004
≤0.004
7
Heavy metal as Pb
%
≤0.0005
≤0.003
≤0.003
8
Fluoride as F
%
≤0.0005
≤0.0005
≤0.0005
9
Color
Apha
≤30
≤30
≤40
Usage: Polyphosphoric acids are used as a catalyst in the chemical and the petroleum industries for polymerization, alkylation, dehydration, condensation, and isomerization processes .