Methyltin mercaptide

CAS Number

57583-35-4

EC Number

260-829-0

What is Methyltin mercaptide?

Methyltin mercaptide (CAS 57583-35-4), also known commercially as dimethyltin carboxylate, is an organotin compound used primarily as a heat stabilizer and processing aid in PVC and related polymer systems.

Where is Methyltin mercaptide used?

Rigid PVC: thermal stabilizer that suppresses discoloration and chain scission during extrusion of pipes, profiles, and window frames
Transparent PVC packaging and sheeting: maintains optical clarity under processing heat
Specialty rubber and polymer compounding: supports cross-linking and curing
Tin-catalyzed polymerization: catalyst precursor for polyester and polyurethane production
It protects polymer chains from thermal degradation during high-temperature processing.

Commercial specifications

Drum to bulk IBC formats

Other Names (Synonyms)

2-Ethylhexyl 10-ethyl-4,4-dimethyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate|2-ethylhexyl 2-[[2-(2-ethylhexoxy)-2-oxoethyl]sulfanyl-dimethylstannyl]sulfanylacetate|Dimethyltin carboxylate

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What are the physical properties of Methyltin mercaptide?

Boiling Point 515.6±60.0 °C(Predicted)

Density 1.18[at 20℃]

Water Solubility 4.51mg/L at 20℃

Vapor Pressure 0.81Pa at 25℃

Log P 4.74-8.5 at 20℃

How is Methyltin mercaptide classified and handled safely? Learn More

Danger

GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard

Hazard Statements

H302 Harmful if swallowed

H312 Harmful in contact with skin

H317 May cause an allergic skin reaction

H361 Suspected of damaging fertility or the unborn child

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P264 Wash … thoroughly after handling.