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YOTECH AMINO ACID FACTORY (R&D) OF SUZHOU
YOTECH FINE CHEMICAL OF SUZHOU

Product  

 


Stannous Fluoride

Molecular formula: SnF2          Molecular weight : 156.71

Uses: Used in toothpaste production, in order to protect the teeth to prevent calcium be dissolve out. Daily chemical industry, reduce drug allergy. Used in brazing aluminium alloy as soft soldering flux.

Property: Property: white Monoclinic crystal . Melting point 215℃. Boiling point 850℃.

CAS#: 7783-47-3           Customs No.: --               MSDS: --              Risk No.: --

Product specification

Electronic grade

Toothpaste grade

Pharmaceutical grade

Standard

SEMI C1

Yotech Standard

USP-34

Assay                   

≥99.9%

≥99.0%

≥94.0%

Sn                %

≥75%

≥75%

≥71.2%

F                %

23.5-24.8%

22.3-25.5%

22.3-25.5%

Sb              

≤30 ppm

≤0.005%

≤0.005%

Pb               ppm

≤10 ppm

≤0.001%

≤0.003%

Arsenic (As)             ppm

≤1 ppm

≤0.0003%

≤0.0003%

Hg              ppm    

≤1 ppm

≤0.0002%

≤0.0002%

Fe               ppm

≤5 ppm

≤0.001%

≤0.0018%

Si             ppm

≤50 ppm

--

--

PH (0.4% Aq. solution)

2.8-3.5

2.8-3.5

2.8-3.5

Intermediate inspection

Appearance Identification

white crystal

white crystal

white crystal

Loss on dry (105℃/4H)  %

≤0.2

≤0.2

≤0.5

Whiteness (70-90umGranularity)   %

≥98 

≥98 

≥95 

Granularity (U.S.SCREEN)      mesh

90% pass 80-100 mesh

90% pass 80-100 mesh

90% pass 80-100 mesh

Transmission (3% Aq. solution)    %

≥95 

≥95 

≥90 

Shelf life year

Two years

Two years

Two years

Supply reference

Production process

synthesis method

synthesis method

synthesis method

Packing

25kg Plastic-paper bag four layers/20T/(20')FCL

25kg Plastic-paper bag four layers/20T/(20')FCL

25kg Plastic-paper bag four layers/20T/(20')FCL

Specification of price

FCL

FCL

FCL

Price           CNY/T

Validity period of quoted price

3 months

3 months

3 months

Note: special requirements are negotiable for customers with specific specifications.

         
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