organotin


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organotin

Any tin-based organic compound in wide use for marine anti-fouling paints, wood catalysts, plasticisers, slimicides, in industrial water systems and as fungicides. Human exposure results from contaminated seafood, agricultural products and drinking water. Blood levels of organotins may be high enough to act on retinoid X receptors and PPAR gamma, upregulating the adipogenic signalling pathway, which explains organotins’ obesogenic effects.
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Organophosphates were more potent than organophosphites, but both were much less potent than organotins, which suggests that some other chemical feature, perhaps the electron density of the tin atom, might play an important role in the binding.
Five new organotin compounds of 4- formylpiperazinium 4-formylpiperazine-1- carbodithioate were synthesized by reacting it with respective organotin(IV) chlorides and fully characterized by different analytical techniques.
Low-cost, liquid organotin stabilizers for PVC include CC-7711, CC-7711A and CC-7712 for rigid pipe and profiles that reportedly show excellent cost-performance; CC-101-110 and CC-101FC for injection molding with reportedly superior cost-performance and excellent color hold; CC-1015M for siding and window profiles; and CC-11, particularly recommended for high-gloss sheet extrusion.
The Anti-Fouling Working Group is working to have countries ratify and comply with the treaty as concern is heightened by the treaty's looming January 2008 deadline for the elimination of organotin compounds from ships' hulls or its effective containment on hulls.
Keywords: 4- ferrocenylbenzoic acid, organotin (IV), ferrocene based bimetallics, DNA binding.
General information: Whereas inorganic tin species such as Sn(II) chloride, oxide or sulphate do not seem to be toxic or cancerogenic, organotin species are highly toxic.
On July 12, the Commission proposed prohibiting the sale of organotin compounds for EU vessels by 2003 and for all ships regardless of their flag by 2008.
Organotin heat stabilizers for rigid vinyl include Advastab TM- 181 high-performance tin stabilizer for siding, profiles, injection and blow molding; TM-694 tin stabilizer for pipe; TM-280SP series for profile; TM-281IM for injection molding; and TM-948 for general-purpose bottles.
The Convention provides for a total ban, starting on 1 January 2003 on the use of organotin compounds, such as tributyltin or TBT, which act as biocides in anti-fouling systems for ships.