Sodium Fluoride 7681-49-4 NaF Molecular formula: NaFMolecular weight: 42Standard: GB4293-84CAS No.: 7681-49-4Properties: it is a white powder or crystal, it is relative density is 2.56, melting point 993 and bolting point 1704. it is insouble in etha
Detailed introduction to Sodium Fluoride 98% Indurstry grade:
Sodium Fluoride 7681-49-4 NaF
Molecular formula: NaF
Molecular weight: 42
Standard: GB4293-84
CAS No.: 7681-49-4
Properties: it is a white powder or crystal, it is relative density is 2.56, melting point 993 and bolting point 1704. it is insouble in ethanol and toxic, its aqueous solution will etch glass.
Spec.
1) Crystalloid 40-120mesh
parameter | data | |
Food grade & Dentifrice grade | Industry first grade | |
Content(NaF)%>= | 99 | 98 |
SiO2%<= | 0.4 | 0.5 |
Na2CO3%<= | 0.1 | 0.5 |
SO4%<= | 0.1 | 0.3 |
Water insouble matter%<= | 0.3 | 0.5 |
Acidity (HF)%<= | 0.1 | 0.1 |
Moisture(H2O)%<= | 0.2 | 0.5 |
Heavy metal(Pb) | 0.005 |
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Remark(food grade and dentifrice grade):
acidity or alkalinity: 0.04ml
fluosilicate: not find out
appearance: without visible impurity
odor: odorless
qualitative----- fluorinion: pass
K: 0.0026
Chloride<120mg/kg
Fe<75mg/kg
heavy metal(Pb)<0.003
moisture(method of loss of weight )<0.1
qualitative---sodium ion: pass
impurity<0.5mg/20g
As<2mg/kg
NaF: 99.2
Particle size: 325mesh
2) Powder 150-240mesh
parameter | data |
Industry grade | |
Content(NaF)%>= | 98 |
SiO2%<= | 0.5 |
Na2CO3%<= | 0.5 |
SO4%<= | 0.3 |
Water insouble matter%<= | 0.7 |
Acidity (HF)%<= | 0.1 |
Moisture(H2O)%<= | 0.5 |
Usages:
1) NaF is an important fluoride, used as pesticides and bactericides in agriculture
2) Used as wood conservative, water treatment agent, ceramic pigment and fluoride treament of light metal
3) Used as UF2 adsorbent in neclear industry
4) Used as materials for making other fluoride chemicals, in enamel industry, medical industry, paper making industry, building materials etc.