Trimethoxysilylpropanethiol CAS 4420-74-0

Product name: Trimethoxysilylpropanethiol
CAS：4420-74-0
MF： C6H16O3SSi
MW：196.34
EINECS:224-588-5

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Model:
4420-74-0
Brand:
bosschem
Code:
4420-74-0

Product Description

Product Description

Product name: Trimethoxysilylpropanethiol

CAS：4420-74-0

MF： C6H16O3SSi

MW：196.34

EINECS:224-588-5

Use:

1. Used for fiberglass production to improve mechanical strength and resistance to humid environments

2. Widely used in natural and synthetic rubber

3. Used as a reinforcing agent and crosslinking promoter

4. Used as a resin modification additive and enzyme immobilizer

5. Using it to treat the surfaces of metals such as gold, silver, and copper can improve their corrosion resistance, oxidation resistance, and enhance their adhesive properties to polymer materials

Specifications :

Trimethoxysilylpropanethiol Basic information
Product Name:	Trimethoxysilylpropanethiol
CAS:	4420-74-0
MF:	C6H16O3SSi
MW:	196.34
EINECS:	224-588-5
Mol File:	4420-74-0.mol
Trimethoxysilylpropanethiol Chemical Properties
Melting point	<-50°C
Boiling point	213-215 °C(lit.)
density	1.057 g/mL at 25 °C(lit.)
vapor pressure	0.2 hPa (20 °C)
refractive index	n20/D 1.444(lit.)
Fp	204 °F
storage temp.	2-8°C
solubility	Miscible with methanol, ethanol, isopropanol, benzene, toluene and xylene.
pka	10.47±0.10(Predicted)
form	Liquid
color	Clear colorless to light yellow
Specific Gravity	1.04
Water Solubility	decomposes
Sensitive	Air & Moisture Sensitive
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
BRN	2038119

Item	Standard
Appearance	Yellowish transparent liquid
Assay%	≥98
Specific Gravity at 25°C, g/cm3	1.057
Refractive Index, ND20	1.442

公司信息

Trimethoxysilylpropanethiol 4420-74-0 C6H16O3SSi

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.