Dihydroxypropyltetramethyldisiloxane

Dihydroxypropyltetramethyldisiloxane - Names and Identifiers

Name	1,3-Bis(hydroxypropyl)tetramethyldisiloxane
Synonyms	Dihydroxypropyltetramethyldisiloxane Bishydroxypropyltetramethyldisiloxane 1,3-Bis(hydroxypropyl)tetramethyldisiloxane 3,3'-[Oxybis(dimethylsilanediyl)]bis(propane-1-ol) 1,3-BIS(HYDROXYPROPYL)TETRAMETHYLDISILOXANE, tech 95 4,4,6,6-Tetramethyl-5-oxa-4,6-disila(nonane)-1,9-diol 1,3-Di(3-Hydroxylpropyl)-1,1,3,3-Tetramethyl-Disiloxane 3,3'-(1,1,3,3-tetramethyldisiloxane-1,3-diyl)dipropan-1-ol 1,3-Bis(3-hydroxypropyl)-1,1,3,3-tetramethylpropanedisiloxane 3,3'-(1,1,3,3-Tetramethylpropanedisiloxane-1,3-diyl)bis(1-propanol)
CAS	18001-97-3
EINECS	241-916-2
InChI	InChI=1/C10H26O3Si2/c1-14(2,9-5-7-11)13-15(3,4)10-6-8-12/h11-12H,5-10H2,1-4H3

Dihydroxypropyltetramethyldisiloxane - Physico-chemical Properties

Molecular Formula	C10H26O3Si2
Molar Mass	250.48
Density	0.953
Melting Point	<0°C
Boling Point	75 °C
Flash Point	45°C
Vapor Presure	0.0299mmHg at 25°C
Specific Gravity	0.953
pKa	14.89±0.10(Predicted)
Storage Condition	2-8°C
Sensitive	4: no reaction with water under neutral conditions
Refractive Index	1.4472 [25°C]

Dihydroxypropyltetramethyldisiloxane - Risk and Safety

Risk Codes	R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
UN IDs	1993
TSCA	No

Dihydroxypropyltetramethyldisiloxane - Introduction

1,3-bis (hydroxypropyl) tetramethyldisilane is an organosilicon compound with the chemical formula C12H30O2Si2.

Nature:
1,3-bis (hydroxypropyl)tetramethyl disiloxane is a colorless to pale yellow liquid. It has low toxicity and low volatility, insoluble in water, but soluble in organic solvents such as ethanol and xylene.

Use:
This compound is mainly used as an adhesive or sealant. Due to its high stability and chemical inertness, it is often used for sealing and bonding medical devices, optical devices, electronic components and aerospace equipment. It can also be used for the modification of paints, dyes, plastics, textiles and adhesives.

Method:
The general preparation of 1,3-bis (hydroxypropyl)tetramethyl disiloxane can be carried out by a Silylation reaction. The main reaction step is the reaction of 1,3-bis (3-bromopropyl)-1,1,3,3-tetramethyldisiloxane with sodium hydroxide in an alcohol solvent, 1,3-bis (hydroxypropyl) tetramethyldisilane is generated.

Safety Information:
1,3-bis (hydroxypropyl) tetramethyldisilane is relatively safe under normal conditions of use. However, it should avoid contact with strong oxidizers because it may burn or explode. During use, care should be taken to avoid inhaling gases, liquids or vapors, and to avoid contact with skin and eyes. If accidental contact, should immediately rinse with plenty of water, and seek medical treatment.

Last Update：2024-04-10 22:29:15