Натрий фтористый. Номер CAS 7681-49-4
Product Name: Sodium Fluoride SF
CAS No: 7681-49-4
EINECS No.: 231-667-8
Molecular formula: NaF
Molecular weight: 42
Appearance: a white powder or crystal.
Purity: 99%
Place of origin: Hubei Province, China
annual output: 10000MT
Hazardous Grade: 6.1
UN NO: 1690
Packing: Plastic woven bag lined with plastic bag, net weight 25kg.
Loading capacity of 20GP: 25MT
Delivery Port Yangsi Port, Wuhan City or China Main port
Standard: GB4293-84
Properties: White crystal; relative density: 2.258, melting point: 993°C,boiling point: 1695°C. Slightly soluble in water and alcohol, dilute acid; soluble in hydrofluoric acid, forming sodium bifluoride; toxic.
Specifications:
1) Crystalloid 40-120mesh
|
parameter |
data |
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Food grade & Dentifrice grade |
Industry first grade |
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|
Content(NaF)%>= |
99 |
98 |
|
SiO2%<= |
||
|
Na2CO3%<= |
||
|
SO4%<= |
||
|
Water insouble matter%<= |
||
|
Acidity (HF)%<= |
||
|
Moisture(H2O)%<= |
||
|
Heavy metal(Pb) |
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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%<= |
|
|
Na2CO3%<= |
|
|
SO4%<= |
|
|
Water insouble matter%<= |
|
|
Acidity (HF)%<= |
|
|
Moisture(H2O)%<= |
Applications:
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 nuclear industry
4) Used as materials for making other fluoride chemicals, in enamel industry, medical industry, paper making industry, building materials
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