Decamethyltetrasiloxane

Description

Decamethyltetrasiloxane · CAS 141-62-8 · C10H30O3Si4. UNII C23WAL597T. Vapor Pressure: 0.37 [mmHg].

Identification

CAS Registry Number	141-62-8
PubChem CID	8852
Molecular formula	C10H30O3Si4
IUPAC name	[dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane
UNII (FDA)	C23WAL597T

Computed Descriptors

Molecular Weight	310.68
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	6
Exact Mass	310.12720095
Monoisotopic Mass	310.12720095
Topological Polar Surface Area	27.7
Heavy Atom Count	17
Formal Charge	0
Complexity	227

Physical & Chemical Properties

Vapor Pressure	0.37 [mmHg]

Physical description & handling notes

• Liquid
• Liquid; [Merck Index] Clear colorless liquid; [Acros Organics MSDS]

Regulatory Status

GHS notification summary	24.1% (84 / 348)

GHS Hazard Classification

GHS notification summary	24.1% (84 / 348)
Reported hazard statements	H226 (38.8%), H413 (40.8%)

Documented Uses

• Used to make extreme temperature silicone oils and as a foam suppressant in lubricating oils; [Merck Index]
• Cosmetics product ingredient: Decamethyltetrasiloxane (Tetrasiloxane)
• Information on 13 consumer products that contain Decamethyltetrasiloxane in the following categories is provided:
• 2023: 1,000,000 - <2,500,000 lb
• 2022: 1,000,000 - <2,500,000 lb
• 2021: 1,000,000 - <2,500,000 lb

Synonyms

DECAMETHYLTETRASILOXANE; 141-62-8; 1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane; Tetrasiloxane, decamethyl-; C23WAL597T; Tetrasiloxane, 1,1,1,3,3,5,5,7,7,7-decamethyl-; EINECS 205-491-7; TETRASILOXANE, DECAMETHYL; DTXSID2044551; EC 205-491-7; DECAMETHYLTETRASILOXANE [MI]; RefChem:585342; DTXCID0024551; 1,1,1,3,3,5,5,7,7,7Decamethyltetrasiloxane; Tetrasiloxane, 1,1,1,3,3,5,5,7,7,7decamethyl; 205-491-7

Frequently Asked Questions

What are the CAS number and molecular formula of Decamethyltetrasiloxane?

CAS 141-62-8; molecular formula C10H30O3Si4; molecular weight — g/mol.

What other names is Decamethyltetrasiloxane known by?

DECAMETHYLTETRASILOXANE, 141-62-8, 1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane, Tetrasiloxane, decamethyl-, C23WAL597T, Tetrasiloxane, 1,1,1,3,3,5,5,7,7,7-decamethyl-.

Is Decamethyltetrasiloxane classified as hazardous?

24.1% of GHS notifications report no hazard classification (84 of 348).

What are the key physical properties of Decamethyltetrasiloxane?

Vapor Pressure: 0.37 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.