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EC number: 212-039-2 | CAS number: 753-73-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
in water, DMTC undergoes rapid degradation by hydrolysis and is expected to hydrolyze within minutes. In water, the chloride ligand on DMTC readliy hydrolyzes to form tin hydroxide and generates HCl. As the concentration of HCl increases, the hydroxide reacts back to form DMTC until equilibrium is reached. Thus, this reaction gives the appearance that DMTC is hydrolytically stable; however, it is actually the alkyltin moiety, DMT, that is stable.
Therefore, the alkyltin moiety, DMT is hydrolytically stable (t1/2 >1 year at 25°C).
Key value for chemical safety assessment
Additional information
A study was performed in accordance with OECD Guideline 111 and to the GLP standard. The percentage hydrolysis of the test substance was less than 10% after incubation in buffer solutions pH 4.0, pH 7.0 and pH 9.0 and in Milli-Q water for 5 days at 50 °C.
It should be noted that the analytical method applied involves derivatisation of the test substance with STEB to the corresponding ethyl compounds (dimethyltin diethyl). As a consequence, the alkyltin moieties of DMTC were monitored in the hydrolysis tests, but not the chloride ligands (currently, there is no analytical method available that can quantify the entire organotin compound with its associated ligands).
A study from Bertelo gives some details: in water, DMTC undergoes rapid degradation by hydrolysis and is expected to hydrolyze within minutes. In water, the chloride ligand on DMTC readliy hydrolyzes to form tin hydroxide and generates HCl. As the concentration of HCl increases, the hydroxide reacts back to form DMTC until equilibrium is reached. Thus, this reaction gives the appearance that DMTC is hydrolytically stable; however, it is actually the alkyltin moiety, DMT, that is stable.
Therefore, the alkyltin moiety, DMT is hydrolytically stable (t1/2 >1 year at 25°C).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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