WebNon-pesticidal organotin compounds, which appeared on the first Priority Substances List (PSL1), were assessed in 1993 to determine whether they met the criteria set out in section 11 of CEPA, which is now repealed and replaced by CEPA 1999. For information on the PSL1 assessment on organotins, please visit the Existing Substances Division Web ... WebList of active substances and suppliers; Chemicals subject to PIC; Transitional Measures; Information from the Existing Substances Regulation (ESR) PBT/vPvB assessments …
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WebOrganotins (OTs) are a family of chemicals that vary widely in their toxicity. The family includes potent neurotoxicants and immunotoxicants and some OTs have characteristics … Web8 dec. 2016 · Since the 1940s–1950s, industrial development in the United States and Europe paved the way for the widespread use of organotins (OTs) use in the plastic industry as additives (for thermal and light stability) and catalysts (polyurethane foams and silicones) (Fent 1996a).Later, in the 1960s, inclusion of organotins in antifouling paints … software technology stocks
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Organotin hydrides have the formula R4−nSnHn for values of n up to 3. The parent member of this series, stannane ( SnH4 ), is an unstable colourless gas. Stability is correlated with the number of organic substituents. Tributyltin hydride is used as a source of hydride radical in some organic reactions. Meer weergeven Organotin chemistry is the scientific study of the synthesis and properties of organotin compounds or stannanes, which are organometallic compounds containing tin carbon bonds. The first organotin compound … Meer weergeven Organotin compounds can be synthesised by numerous methods. Classic is the reaction of a Grignard reagent with tin halides for example tin tetrachloride. An example is provided by the synthesis of tetraethyltin: 4 … Meer weergeven An organotin compound is commercially applied as stabilizers in polyvinyl chloride. In this capacity, they suppress degradation by removing … Meer weergeven • Organostannane addition • Tributyltin azide • Carbastannatranes Meer weergeven Organotin compounds are generally classified according to their oxidation states. Tin(IV) compounds are much more common and more useful. Organic derivatives of tin(IV) The tetraorgano derivatives are invariably tetrahedral. … Meer weergeven Important reactions, discussed above, usually focus on organotin halides and pseudohalides with nucleophiles. In the area of organic synthesis, the Stille reaction is … Meer weergeven The toxicities of tributyltin and triphenyltin derivatives compounds are comparable to that of hydrogen cyanide. Furthermore, tri-n-alkyltins are phytotoxic and therefore cannot be used in agriculture. Depending on the organic groups, they can be powerful Meer weergeven WebStudies of a few organotins in animals suggest that some organotin compounds can produce cancer. On the basis of no data in humans and questionable data from a study in rats, EPA has determined that one specific organotin, tributyltin oxide, is not classifiable as to human carcinogenicity; that is, it is not known whether or not it causes cancer in humans. Web• focused on the presence and effects of four specific (groups of) organotins - dibutyltin (DBT), tributyltin (TBT), dioctyltin (DOT) and triphenyltin (TPT); and Executive Summary slow motion hack