Specialty Additives Available to Source

Organotin Stabilizer (e.g., Methyltin Mercaptide)

CAS 57583-35-4 · MF C22H44O4S2Sn · MW 555.4 g/mol

Organotin Stabilizer (Methyltin Mercaptide) is an organotin-based specialty additive that provides antioxidant activity in polymer systems. This chemical compound is specifically formulated for use in the plastics and polymers industry, where it helps prevent oxidative degradation and extends material performance. The stabilizer offers reliable protection against thermal and oxidative stress…

SDS / TDS Download
CAS Number
57583-35-4
Molecular Formula
C22H44O4S2Sn
Molecular Weight
555.4 g/mol
Material Family
Specialty Additives
Functional Roles
Industries Served
Physical Properties
physical_description
Liquid; Dry Powder
GHS / SDS Safety Danger
Environmental Hazard Irritant Health Hazard
  • H312 (73.1%): Harmful in contact with skin [Warning Acute toxicity, dermal]
  • H361d: Suspected of damaging the unborn child [Warning Reproductive toxicity]
  • H302+H312 (38.8%): Harmful if swallowed or in contact with skin [Warning Acute toxicity, oral; acute toxicity, dermal]
  • H412 (75.4%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
  • H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
  • H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
  • H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
  • H361d (38.8%): Suspected of damaging the unborn child [Warning Reproductive toxicity]
  • H372 (77.6%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
  • H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
  • H302: Harmful if swallowed [Warning Acute toxicity, oral]
  • H317 (99.6%): May cause an allergic skin reaction [Warning Sensitization, Skin]
  • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
  • H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H373 (22.4%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
  • H361 (61.2%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
Chemical Identity
CAS Number57583-35-4
IUPAC Name2-ethylhexyl 2-[[2-(2-ethylhexoxy)-2-oxoethyl]sulfanyl-dimethylstannyl]sulfanylacetate
InChI KeyYAHBZWSDRFSFOO-UHFFFAOYSA-L
PubChem CID 9576130
Synonyms & Trade Names
2-Ethylhexyl 10-ethyl-4,4-dimethyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate RefChem:471956 Methyltin mercaptide Dimethyltin bis(2-ethylhexyl thioglycolate) FM41126 NS00053850 583M354 Bis(2-ethylhexyl) 2,2'-((dimethylstannanediyl)bis(sulfanediyl))diacetate
Full Description

Organotin Stabilizer (Methyltin Mercaptide) is an organotin-based specialty additive that provides antioxidant activity in polymer systems. This chemical compound is specifically formulated for use in the plastics and polymers industry, where it helps prevent oxidative degradation and extends material performance. The stabilizer offers reliable protection against thermal and oxidative stress in various polymer applications.