Food phosphates

Sodium tripolyphosphate (STPP)

  Requested parameters Measured
P2O5 v % min.57.00 57.90
Insolubilities - % max.0.10 0.06
As max.3.0 0.50
Pb - ppm max.5.0 0.20
F max.10 2.0
1% solution of PH 9.5 .. 10.2 9.8
Moisture- % max.0.70 0.2
Cd max.1.0 0.10
Hg - ppm max.1.0 0.10
Heavy metals max.10.0 <10.0
tripolyphosphate min.95.0 96.50

 

Tetrasodium pyrophosphate (TSPP)

  Requested parameters Measured
P2O5 v % min.52.5 53.65
Sodium pyrophosphate - % min.95.00 95.38
1% solution of PH 9.8 .. 10.8 10.2
Insolubilities - % max.0.2 0.10
Ignition loss by 550 C - % max.0.5 0.4
Fluoride max.10 4.0
Plumbum - ppm max.4.0 0.20
Cadmium max.1.0 0.10
Hg - ppm max.1.0 0.10
As max.3 0.50

 

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