DINAYEN'S ENTERPRISE MANAGEMENT CO,.LTD

Items

Standard Index
Super Grade

First Grade

Eligible grade
Appearance

Crystal or white powder
Sodium Silicofluoride % ≥

99.0

98.50

97.0
Iron (Fe) % ≤

0.02

/

/
Loss of Weight on Drying at 105°C % ≤

0.30

0.40

0.60
Insoluble in Water % ≤

0.40

0.50

1.0
Free Acid (as HCL) % ≤

0.10

0.15

0.20
Heavy Metal (as Pb) % ≤

0.02

0.05

0.05
Fineness Passed 250mesh Sieve % ≤

90

90

90