Agent Name

(3-Mercaptopropyl)trimethoxysilane

CAS Number

4420-74-0

Formula

C6-H16-O3-S-Si

Major Category

Metals

Synonyms

(3-Thiopropyl)trimethoxysilane; (gamma-Mercaptopropyl)trimethoxysilane; 3-(Trimethoxysilyl)propanethiol; 3-(Trimethoxysilyl)propyl mercaptan; 3-Mercaptopropyltrimethoxysilane; A 189 (silicone); AZ 6129; GF 70; KBE 803; KBM 803; M 8500; M 8500 (coupling agent); MPS; MPS-M; NUCA 189; Prosil 196; SH 6062; Sila-Ace S 810; Silane A 189; Silane, 3-mercaptopropyltrimethoxy-; Silquest A 189; TSL 8380; TSL8380E; Union Carbide A-189; Z 6062; gamma-Mercaptopropyltrimethoxysilane; 1-Propanethiol, 3-(trimethoxysilyl)-; 3-Trimethoxysilylpropane-1-thiol; [ChemIDplus] (Trimethoxysilyl)-1-propanethiol, 3-; 3-(Trimethoxysilyl)-1-propanethiol; Mercaptopropyltrimethoxysilane, 3-; [REPROTOX] Propanethiol, trimethoxysilyl-; Silicone A-189; [RTECS]

Category

Metalloid Compounds (Silicon)

Description

Colorless liquid with a stench; [Alfa Aesar MSDS]

Sources/Uses

Used as a coupling agent in polysulfide and polyurethane caulks and sealants; [REPROTOX]

Comments

A mild skin irritant; [RTECS] A skin and strong eye irritant; Harmful by ingestion; [Alfa Aesar MSDS] See "3-Chloropropyltrimethoxysilane."

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