Sodium silver thiosulphate |
Last updated: 31/10/2024 |
(Also known as: silver sodium thiosulphate; sodium silver thiosulfate; silver sodium thiosulfate; SST) |
SUMMARY |
Sodium silver thiosulphate is a silver complex used as a post-harvest conditioner. A non-volatile aqueous solution of silver and thiosulphate ions. No significant human health concerns identified. No significant environmental concerns highlighted relate directly to its use however wastes must not reach the public sewer as there is a risk to terrestrial biodiversity from contaminated sewage sludge. Highly toxic to aquatic life and soil invertebrates. |
Data alerts |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
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A complex mixrture of compounds and free ions used, commercially, as a plant growth regulator to prolong the life of cut flowers particularly useful for those sensitive to ethylene | |
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Quality; Life-span | |
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Ornamentals - cut flowers | |
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Current | |
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UK regulatory status |
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Not approved | ||
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Withdrawn | ||
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None |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Netherlands/Latvia | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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31/12/2026 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Chemical structure |
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None | |
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AgNa₃O₆S₄ | |
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[O-]S(=O)(=S)[O-].[O-]S(=O)(=S)[O-].[Na+].[Na+].[Na+].[Ag+] | |
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XXAQKQFXTTXLEW-UHFFFAOYSA-J | |
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InChI=1S/Ag.3Na.2H2O3S2/c;;;;2*1-5(2,3)4/h;;;;2*(H2,1,2,3,4)/q4*+1;;/p-4 | |
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No |
General status |
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Plant Growth Regulator, Anti-senescent | |
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Inorganic compound | |
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10 g Ag kg⁻¹ as Ag | |
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Synthetic | |
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16027-55-7 | |
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240-167-9 | |
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762 | |
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080119 | |
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150303 | |
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No data found | |
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401.1 | |
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silver; trisodium;dioxido-oxo-sulfanylidene-lambda6-sulfane | |
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Contains silver nitrate | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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Clear liquid | |
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Formulations |
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Usually supplied as a soluble concentrate formulation |
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Not applicable | ||||||||
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Not applicable | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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-22 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Freezing point5 = Verified data used for regulatory purposes |
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100 | E3 E = Manufacturers safety data sheets as silver thiosulphate3 = Unverified data of known source |
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1.144 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as silver thiosulphate4 = Verified data |
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2.3 X 1006 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as silver thiosulphate5 = Verified data used for regulatory purposes |
Highly volatile. If applied directly to plants or soil, drift is a concern & mitigation is advisable | ||||||||
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Max @ 277.6nm | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as silver thiosulphate4 = Verified data |
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72.0 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as silver thiosulphate4 = Verified data |
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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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84000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Fate indices |
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Cannot be calculated | - | - | |||||||||||||||||||||||||
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Known metabolites |
None
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Terrestrial ecotoxicology |
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> 2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
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Aquatic ecotoxicology |
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0.0056 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Pimephales promelas as Ag4 = Verified data |
High | ||||||||
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0.00024 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Oncorhynchus mykiss as Ag4 = Verified data |
High | ||||||||
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0.00026 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Daphnia magna as Ag4 = Verified data |
High | ||||||||
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0.00016 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Daphnia magna as Ag4 = Verified data |
High | ||||||||
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0.00056 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Selenastrum capricornutum as silver thiosulphate4 = Verified data |
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General |
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High (class III) | - | - | ||||||||
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> 2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
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None allocated | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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None allocated | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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0.00006 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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5 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Acceptable for proposed uses | |||||||||
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Acceptable for proposed uses | ||||||||||
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Health issues |
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Possinle gastro-intestinal irritant Possible liver, pancreas and adrenals toxicant |
Handling issues |
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Not expected to auto-ignite; Not highly flammable | |||
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Not listed (Not listed) | |||
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Careful disposal of wastes required - do not permit substance to reach sewer system | |||
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sodium silver thiosulphate | ||
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Record last updated: | 31/10/2024 |
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 |