SPECIFICATION
|
TOOTHPASTE GRADE
|
HG2763-1996
|
ITEMS
|
USP-27
|
CHINA STANDARD
|
assay(Na2PO3F) %
|
91.7-100.5%
|
≥93%
|
Coalescent fluorin %
|
/
|
≥12.3%
|
dissociate fluorin %
|
≤1.2%
|
≤1.2%
|
assemble fluorin %
|
/
|
≥12.7%
|
arseni %
|
≤0.0003%
|
≤0.0003%
|
PH value(20g/Lsolution)
|
6.5-8.0
|
6.5-8.0
|
Loss on drying %
|
≤0.2%
|
≤0.2%
|
volatilization %
|
Eligible
|
/
|
Heavy metal %
|
≤0.005%
|
≤0.005%
|
Middle Control Item
|
||
White degree %
|
≥80%
|
≥80%
|
Particle size
(micron)
|
100-200(90%)
|
100-200(90%)
|