PHOSPHATES
Sodium Salt
Calcium Salt
PYROPHOSPHATE
CITRATES
ACETATES
OTHERS
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Quality standards
TEST ITEM
FCC-V
E341(ii)
Description
White powder
White crystal or granular,
granular powder or powder
Assay(200℃, 3 hours), %
97.0-105.0
98.0-102.0
P2O5 content(Anhydrous basis),%
--
50.0-52.5
Identification
Positive tests for calcium and for phosphate
Solubility tests
Sparingly soluble in water,
Insoluble in ethanol
Heavy metals(As Pb), ≤%
Fluoride,≤mg/kg
50
Loss on drying, %
Anhydrous 7.0-8.5
Dihydrate 24.5-26.5
Loss on ignition, ≤%
Anhydrous 8.5
Dihydrate 26.5
Arsenic,≤mg/kg
3
Lead,≤mg/kg
2
4
Cadmium, ≤mg/kg
1
Mercury,≤mg/kg
Packing: In 25kg composite plastic woven/paper bag with PE liner.
Storage and transport: It should be stored in a dry and ventilative warehouse and kept away from moisture and poisonous substances. Handled with care, so as to avoid damage to packing bags.
MCP---Monocal
STPP---Sodium
SHMP---Sodium
MSP---Monosod
DSP---Disodiu
TSP---Trisodi
TCP---Tricalc
TSPP---Tetrap