C4H12O4Si
152.22 g/mol
Industrial ChemicalDanger
Tetramethoxysilane
CAS681-84-5EC211-656-4
Category
Industrial Chemical
Compound Class
Ester
Primary Use
Silicon compound for coatings and sealants
Tetramethoxysilane, also known as tetramethyl orthosilicate, is a silicon compound with four methoxy groups bonded to a central silicon atom. It is primarily used as a precursor in the production of coatings and sealants.
precursor for silicon-based coatingsprecursor for sealants
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.
Sourcing Tetramethoxysilane?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Related Compounds
ReferenceSame Category
2,2-Difluoro-1,3-benzodioxole-5-acetonitrile
CAS68119-31-3
Fine chemical intermediate
ReferenceSame Category
4-Oxazolemethanol, 4-ethyl-2-(8-heptadecen-1-yl)-4,5-dihydro-
CAS68140-98-7
Viscosity modifier
ReferenceSame Category
2,3-Dinitro-4-methylphenol
CAS68191-07-1
dinitrocresol derivative for industrial applications
ReferenceSame Category
Sodium metasilicate
CAS6834-92-0
Steel producing, foundry, welding, petroleum, pulp and paper
Safety Reference
Danger
H226Flammable liquid and vapour
H315Causes skin irritation
H318Causes serious eye damage
H330Fatal if inhaled
H335May cause respiratory irritation
H372Causes damage to organs through prolonged or repeated exposure
H225Highly flammable liquid and vapour
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Tetramethoxysilane (CAS 681-84-5) is 2920.90.
HS code (international, 6-digit)
2920.90
EU CN code (8-digit)
2920 90 70
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
tetramethyl silicate
InChIKey
LFQCEHFDDXELDD-UHFFFAOYSA-N
SMILES
CO[Si](OC)(OC)OC
Synonyms (27)
- TMOS
- Dynasil M
- Methyl Silicate 39
- Methyl orthosilicate
- Methyl silicate
- Methyl silicate ((CH3)4SiO4)
- Methyl silicate ((MeO)4Si)
- Methyl silicate 28
- Methyl silicate 51
- Methyl silicate 56
- SIT 7510.0
- Si(OMe)4
- Silane, tetramethoxy-
- TETRAMETHYL ESTER SILICATE
- TETRAMETHYL SILICATE
- Tetramethoxysilane
- Tetramethyl orthosilicate
- Tetramethylsilikat
- Tetramethylsilikat [Czech]
Sourcing Tetramethoxysilane?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.