13270-97-8

13270-97-8 - Names and Identifiers

Name	3,5-Diphenyloctamethyltetrasiloxane
Synonyms	3,5-Diphenyloctamethyltetrasiloxane 3,5-DIPHENYLOCTAMETHYLTETRASILOXANE 1,1,1,3,5,7,7,7-octamethyl-3,5-diphenyltetrasiloxane Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-3,5-diphenyl- trimethyl-[methyl-(methyl-phenyl-trimethylsilyloxysilyl)oxy-phenylsilyl]oxysilane
CAS	13270-97-8
InChI	InChI=1/C20H34O3Si4/c1-24(2,3)21-26(7,19-15-11-9-12-16-19)23-27(8,22-25(4,5)6)20-17-13-10-14-18-20/h9-18H,1-8H3

13270-97-8 - Physico-chemical Properties

Molecular Formula	C20H34O3Si4
Molar Mass	434.82
Density	0,979 g/cm3
Melting Point	-40°C
Boling Point	140-145°C 0,4mm
Flash Point	164.6°C
Vapor Presure	6.46E-06mmHg at 25°C
Specific Gravity	0.979
Sensitive	1: no significant reaction with aqueous systems
Refractive Index	1.4774

13270-97-8 - Risk and Safety

Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	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.
TSCA	No

13270-97-8 - Introduction

3,5-diphenyl octamethyltetrasiloxane, chemical formula C20H28O2Si2, is an organic silicon compound. The following is a description of the properties, uses, preparation and safety information of the compound:

Nature:
1. Appearance: Pure 3,5-diphenyl octamethyltetrasiloxane is a white crystalline solid.
2. Melting point: about 66-70°C, with a relatively low melting point.
3. Solubility: Soluble in organic solvents, such as benzene and carbon disulfide.
4. Stability: 3,5-diphenyl octamethyltetrasiloxane has good thermal stability and chemical stability.

Use:
1. As a synthetic intermediate of silicone materials, it can be used to prepare other silicone compounds.
2. Used as a waterproof agent and surface treatment agent, it can provide waterproof performance in the fields of plastics, textiles, coatings and inks.
3. Used as a protective agent for electronic materials, it can improve the high temperature resistance of electronic products.

Preparation Method:
3,5-diphenyloctamethyltetrasiloxane is usually prepared by organic synthesis methods. A common synthetic method is obtained by reacting a silicon hydride compound with diphenyldiiodosilane.

Safety Information:
1. The toxicity data of 3,5-diphenyloctamethyltetrasiloxane is limited, but according to the research of similar compounds, it may have certain toxicity. Therefore, when using should pay attention to follow the safety procedures, avoid contact with skin, eyes and respiratory tract.
2. Avoid contact with oxidants and strong acids during storage to prevent dangerous reactions.
3. in the treatment and disposal of waste, should comply with the local environmental protection regulations, to avoid pollution to the environment.

Last Update：2024-04-10 22:29:15