Stannous fluoride
CAS 7783-47-3
EC 231-999-3
Formula F2Sn
MW 156.71 g/mol
Salts & Minerals Personal Care & CosmeticsPharmaceuticals & Healthcare Preservation & Biocide
Description
Stannous fluoride, also known as tin fluoride, SnF2, or by the trade name Fluoristan, is an inorganic tin salt with CAS number 7783-47-3 and EC number 231-999-3. It carries no assigned E-code and is classified under the Salts & Minerals category.
In oral care formulations, stannous fluoride acts as both an anticaries agent and an antimicrobial, releasing fluoride ions that remineralise enamel while tin ions disrupt bacterial cell membranes to reduce plaque and gingivitis. It is also used in pharmaceutical preparations where controlled fluoride delivery and biocidal activity are required simultaneously.
Stannous fluoride is available in powder and crystalline powder grades, with pharmaceutical-grade material conforming to USP and Ph.Eur. monographs. Procurement should confirm REACH compliance and substance identity under EC 231-999-3. It is classified under HS code 28261990 and is typically supplied in moisture-resistant packaging due to its hygroscopic tendency.
In oral care formulations, stannous fluoride acts as both an anticaries agent and an antimicrobial, releasing fluoride ions that remineralise enamel while tin ions disrupt bacterial cell membranes to reduce plaque and gingivitis. It is also used in pharmaceutical preparations where controlled fluoride delivery and biocidal activity are required simultaneously.
Stannous fluoride is available in powder and crystalline powder grades, with pharmaceutical-grade material conforming to USP and Ph.Eur. monographs. Procurement should confirm REACH compliance and substance identity under EC 231-999-3. It is classified under HS code 28261990 and is typically supplied in moisture-resistant packaging due to its hygroscopic tendency.
Physical Properties
| Melting Point | 213 °C |
| Boiling Point | 850 °C |
| Density | 4.57 g/cm³ @ Temp: 25 °C |
| Appearance | Stannous fluoride is a white crystalline solid with a bitter, salty taste. |
| Color | White to off-white |
| Form | Powder, Crystals or Crystalline Powder |
| Water Solubility | Soluble in potassium hydroxide and potassium fluoride. Insoluble in water, ethanol, ether and chloroform. |
| Log P | -1.357 (est) |
Safety & Handling (Learn More)
Danger GHS05 GHS06 GHS07 GHS09 GHS08
H
H290H300H301H302H314H315H318H319H335H372H411
P
P234P260P261P264P270P271P273P280P316P317P319P321P330P363P390P391P405P406P501P264+P265P301+P316P301+P317P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P301+P330+P331P302+P361+P354P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 28261990 |
| UN Number | 2923 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 6.1D - Non-combustible acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects |
| WGK (Germany) | 3 |
Other Names
Tin(II) fluoridedifluorotinSnF₂fluoristantin difluorideStopSnF2crest
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