1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane

月桂基聚甲基硅氧烷

Also known as: Lauryl Methicone, Laurylmethicone, 3-Dodecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, 3-n-Dodecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, Dodecylheptamethyltrisiloxane, SS 3412, SilCare 41M20, Trisiloxane, 1-dodecyl-1,1,3,3,5,5,5-heptamethyl-, [dimethyl(trimethylsilyloxy)silyl]oxy-dodecyl-dimethylsilane

1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane (CAS 139614-44-1) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C19H46O2Si3 and a molecular weight of 390.824 g/mol. It is also known as Lauryl Methicone, Laurylmethicone and 3-Dodecyl-1,1,1,3,5,5,5-heptamethyltrisiloxane. Key properties include a boiling point of 370.8±25.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 157.8±23.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 139614-44-1
Jingsj CID: J-993939-2
Molecular Formula: C₁₉H₄₆O₂Si₃
Chinese Name: 月桂基聚甲基硅氧烷
Molecular Weight: 390.824 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	370.8±25.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	157.8±23.6 °C

Frequently Asked Questions

What is the CAS number of 1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane?

The CAS number of 1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane is 139614-44-1.

What are the molecular formula and molecular weight of 1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane?

1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane has molecular formula C19H46O2Si3 and molecular weight 390.824 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-Dodecyl-1,1,3,3,5,5,5-heptamethyltrisiloxane (CAS 139614-44-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-993939-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.