Bis[3-(triethoxysilyl)propyl]tetrasulfide CAS 40372-72-3

Product name: Bis[3-(triethoxysilyl)propyl]tetrasulfide
CAS：40372-72-3
MF： C18H42O6S4Si2
MW：538.95
EINECS:254-896-5

Product Description

Product name: Bis[3-(triethoxysilyl)propyl]tetrasulfide

CAS：40372-72-3

MF： C18H42O6S4Si2

MW：538.95

EINECS:254-896-5

Use:

Coupling agents and modifiers in the rubber industry

Specifications :

Bis[3-(triethoxysilyl)propyl]tetrasulfide Basic information
Product Name:	Bis[3-(triethoxysilyl)propyl]tetrasulfide
CAS:	40372-72-3
MF:	C18H42O6S4Si2
MW:	538.95
EINECS:	254-896-5
Bis[3-(triethoxysilyl)propyl]tetrasulfide Chemical Properties
Boiling point	250 °C
density	1.08 g/mL at 20 °C(lit.)
refractive index	n20/D 1.49
Fp	91°C
Specific Gravity	1.095
Water Solubility	Miscible with toluene, primary alcohols, ketones, benzene, chlorinated hydrocarbons, acetonitrile, dimethylformaminde and dimethysulfoxide. Immiscible with water.
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
BRN	2062235
InChIKey	VTHOKNTVYKTUPI-UHFFFAOYSA-N
CAS DataBase Reference	40372-72-3(CAS DataBase Reference)

Test Item	Target Values(Spec.Limits)
Sulfur Content	22 ± 1%
The average sulfur chain length	3.75 ± 0.15
Other impurity content	≤ 1.0%
Alcohol content	≤ 0.5%
*γ2 Content	≤ 3.0%
Specific Gravity (25℃,g/cm3)	1.080 ± 0.02
Refractive Index (25℃)	1.480 ± 0.02
Resiue On Ignition(800±25℃)	11.3 ± 1.0%

公司信息

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.