Sodium hexafluorosilicate (Ref: ENT 1501) |
Last updated: 12/01/2024 |
(Also known as: sodium silicofluoride; sodium fluorosilicate) |
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An obsolete insecticide which once had agricultural application for parasite control | |
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Considered obsolete but may be available in some countries | |
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late 1940s, introduced | |
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Used externally to control lice and mosquitoes and orally to control parasites such as roundworms and whipworms | |
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Cattle; Swine; Poultry |
Approval status |
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Not approved | |
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Not approved |
Chemical structure |
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None | |
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Na₂SiF₆ | |
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F[Si-2](F)(F)(F)(F)F.[Na+].[Na+] | |
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TWGUZEUZLCYTCG-UHFFFAOYSA-N | |
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InChI=1S/F6Si.2Na/c1-7(2,3,4,5)6;;/q-2;2*+1 | |
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Yes |
General status |
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Insecticide, Rodenticide, Antiparasitic | |
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Inorganic insecticide | |
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Synthetic | |
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[Glyceraldehyde-3-phosphate enzyme, Inhibitor] | |
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16893-85-9 | |
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240-934-8 | |
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28127 | |
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009-012-00-0 | |
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- | |
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None allocated | |
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No | |
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- | |
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188.06 | |
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disodium hexafluorosilicate(2−) | |
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disodium;hexafluorosilicon(2-) | |
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disodium hexafluorosilicate(2−) | |
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Phytotoxic | |
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- | |
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White crystalline solid |
Formulations |
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72000 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Decomposes on melting | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Decomposes before boiling | R4 R = Peer reviewed scientific publications 4 = Verified data |
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500 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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2.68 | Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
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1.312 | Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
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Degradation |
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. | ||||||||||
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Soil adsorption and mobility |
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Fate indices |
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Known metabolites |
None
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Terrestrial ecotoxicology |
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< 70 | R4 R = Peer reviewed scientific publications Mouse4 = Verified data |
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Aquatic ecotoxicology |
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General |
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< 70 | R4 R = Peer reviewed scientific publications Mouse4 = Verified data |
High | ||||||||
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Substance is largely absorbed with around 30% eliminated in urine. | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Health issues |
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High does may result in respiratory failure, ventricular tachycardia and fibrillation as well as muscle pain and numbness May cause constipation, loss of appetite, paresis of the rumen, severe abdominal pain and diarrhea |
Handling issues |
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When heated to decomposition, sodium hexafluorosilicate releases toxic fumes of hydrogen | |||
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Health: H301, H311 | |||
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Not classified: Obsolete (Not classified: Obsolete) | |||
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UN2674 | |||
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sodium hexafluorosilicate | ||
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fluorosilicate de sodium | ||
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Record last updated: | 12/01/2024 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |