Agent Name

Methyltriacetoxysilane

CAS Number

4253-34-3

Formula

C7-H12-O6-Si

Major Category

Metals

Synonyms

APK 1 (silane derivative); K 10S; Methylsilanetriol triacetate; Methyltrihydroxysilane triacetate; Silane, methyltriacetoxy-; Triacetoxymethylsilane; Methylsilanetriyl triacetate; Silanetriol, 1-methyl-, 1,1,1-triacetate; Silanetriol, methyl-, triacetate; [ChemIDplus] Triacetoxy(methylsilane); [Alfa Aesar MSDS]

Category

Metalloid Compounds (Silicon)

Description

Solid; [Alfa Aesar MSDS]

Sources/Uses

Used as a cross-linker for silicone sealants and adhesives (completely reacts during curing); [Reference #1]

Comments

Causes severe irritation and burns to skin and eyes in rabbits; [Reference #1] Rapidly hydrolyzed by moisture/water forming acetic acid and the corresponding trisilanols (observed toxicity attributed to acetic acid); [Reference #1] An irritant; Harmful by ingestion; [Alfa Aesar MSDS] See "Acetic acid." See "Ethyltriacetoxysilane."

Reference Link

OECD SIDS: Methyltriacetoxysilane - 2005

Exposure Assessment
Vapor Pressure

0.2 mm Hg

Adverse Effects
Dermatotoxin

Skin Burns

Links to Other NLM Databases
Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: