Sodium Fluoride China

Items

Pharmaceutical grade /Reagent grade

Toothpaste grade

Industrial grade

Standard

USP-34

USP-34

GB/T 1264-1997

Assay  %

98.0-102.0

≥99.0 

≥98.5

Water insoluble%

≤0.05 

≤0.01 

≤0.1

Volatile organic matter  %

Passed the test

Passed the test

Passed the test

Sulfate (SO₄)   %

≤0.01 

≤0.03

≤0.05 

Heavy metal  %

≤0.003 

≤0.003

≤0.005 

Pb        ppm

≤10

≤10

≤20

Arsenic (As)     ppm

≤2

≤2

≤5

Acidity (H⁺)       %

≤0.05

≤0.1

≤0.2

Alkalinity (OH^-)    %

≤0.04

≤0.08

≤0.16

Chloride (Cl)  %

≤0.012 

≤0.012

≤0.02

Fluorosilicates (SiF6)   %

≤0.001 

≤0.002 

≤0.6 

Fe    %

≤0.001 

≤0.002 

≤0.005 

PH (5% Aq. solution)

6.5-8.0

6.5-8.0

6.5-8.0

Intermediate inspection

Appearance Identification

white powder

white powder

white powder

Loss on dry (150℃/4H)  %

≤1.0 

≤0.2 

≤0.2 

Whiteness (70-90umGranularity)   %

≥98 

≥95 

≥90

Transmission (3% Aq. solution)    %

≥98 

≥90 

≥85 

Granularity (U.S.SCREEN)    mesh

90% pass 30-100 mesh

95% pass 20-150 mesh

90% pass 20-150 mesh

Shelf life year

Two years

Two years

Two years

Supply reference

Production process

second Refined

99% Hydrofluoric Acid, Sodium carbonate

Industrial products as raw materials

Packing

25kg plastic paper bag four-layer /20T/(20')FCL

25kg plastic paper bag three layers/20T/(20')FCL

25kg composite bag/20T/(20')FCL