1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane

Also known as: 1,3-Bis(4-hydroxybutyl)-1,1,3,3-tetramethyldisiloxane, 4,4'-(1,1,3,3-Tetramethyldisiloxane-1,3-diyl)dibutan-1-ol, 4,4'-[Oxybis(dimethylsilanediyl)]bis(butane-1-ol), Dihydroxybutyltetramethyldisiloxane, 1-Butanol, 4,4'-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis-

1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane (CAS 5931-17-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H30O3Si2 and a molecular weight of 278.536 g/mol. Key properties include a melting point of <0ºC, a boiling point of 306.2±27.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 139.0±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 5931-17-9
Jingsj CID: J-1476332-7
Molecular Formula: C₁₂H₃₀O₃Si₂
Molecular Weight: 278.536 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	<0ºC
Boiling Point	306.2±27.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	139.0±23.7 °C
Exact Mass	278.173340
PSA	49.69000
LogP	3.99
Vapor Pressure	0.0±1.5 mmHg at 25°C
Refractive Index	1.446

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane?

The CAS number of 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane is 5931-17-9.

What are the molecular formula and molecular weight of 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane?

1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane has molecular formula C12H30O3Si2 and molecular weight 278.536 g/mol.

What are the upstream and downstream products of 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane?

For 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane, Upstream Products: 2,2-Dimethyl-1,2-oxasilinane, Hexamethyldisiloxane, Trimethylsilanol; Downstream Products: 2,2-Dimethyl-1,2-oxasilinane.

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

Last updated: 11/3/2026

How to cite: Jingsj. "1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane (CAS 5931-17-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1476332-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.