C6H16O3SSi
196.34 g/mol
Industrial ChemicalWarning
(3-Mercaptopropyl)trimethoxysilane
CAS4420-74-0EC224-588-5
Category
Industrial Chemical
Compound Class
Other
Primary Use
Silane coupling agent for sealants
(3-Mercaptopropyl)trimethoxysilane (MPTMS) is a hybrid organic compound used as a monomer in organosilicon chemistry. It features a central silicon atom with three methoxy groups and a mercaptopropyl group, enabling reactivity with both organic and inorganic materials.
Silane coupling agent for sealantsMonomer in organosilicon reactions
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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solvent for coatings and inks
ReferenceSame Category
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synthetic intermediate for organic materials
ReferenceSame Category
1,5-dihydroxy-3-methylpentane
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diol intermediate and solvent
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H411Toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for (3-Mercaptopropyl)trimethoxysilane (CAS 4420-74-0) is 2930.90.
HS code (international, 6-digit)
2930.90
EU CN code (8-digit)
2930 90 95
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
3-trimethoxysilylpropane-1-thiol
InChIKey
UUEWCQRISZBELL-UHFFFAOYSA-N
SMILES
CO[Si](CCCS)(OC)OC
Synonyms (32)
- 3-MPTMS
- MPS-M
- A 189 (silicone)
- Aktisil MM (Salt/Mix)
- Dynasylan MTMO
- GF 70
- M 8500 (coupling agent)
- NUCA 189
- Prosil 196
- Sila-Ace S 810
- Silane A 189
- Silicone A-189
- Silquest A 189
- TSL 8380E
- Trimethoxysilylpropanethiol
- Union carbide A-189
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