Diphenylsilanediol

CAS NO.：947-42-2
Empirical Formula: C12H12O2Si
Molecular Weight: 216.31
MDL number: MFCD00002101
EINECS: 213-427-4
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:27:13

What is Diphenylsilanediol?

Description

Diphenylsilanediol is a chemical compound that is used as a catalyst. It can be produced by the reaction of diphenylsilane with sulfuric acid. This chemical has been shown to have high thermal and chemical stability, making it an ideal material for catalytic materials. Diphenylsilanediol has also been shown to be an efficient solid catalyst for synthesizing hydrocarbons from hydrogen fluoride and hydrochloric acid. The efficiency of this catalyst may be due to its ability to reduce the activation energy required for the reaction. Diphenylsilanediol is an important material used to manufacture silicone resins and rubbers. In addition, it is helpful as an additive for organopolysiloxanes that are convertible to the cured solid.

Chemical properties

White powder

The Uses of Diphenylsilanediol

Diphenylsilanediol is used in Medicine field, electronics industry and polymer material.

Preparation

Diphenylsilanediol was obtained by controlled hydrolysis of diphenyldichlorosilane in the presence of aniline as acid acceptor and ethyl ether .

General Description

Diphenylsilanediol(DPSD) is an alkoxysilane that is used as a silane based precusor in the synthesis of organosiloxane based resins.

Flammability and Explosibility

Non flammable

Purification Methods

Recrystallise it from CHCl3/methyl ethyl ketone. [Beilstein 16 IV 1523.]

Properties of Diphenylsilanediol

Melting point:	144-147 °C
Boiling point:	353°C [760mmHg]
Density	0.87
vapor density	>1 (vs air)
vapor pressure	0Pa at 25℃
Flash point:	129 °F
storage temp.	Inert atmosphere,Room Temperature
form	Powder
pka	12.06±0.53(Predicted)
color	white
Water Solubility	reacts
Sensitive	Air & Light Sensitive
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
BRN	2523445
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference	947-42-2(CAS DataBase Reference)
NIST Chemistry Reference	Diphenyl silanediol(947-42-2)
EPA Substance Registry System	Silanediol, diphenyl- (947-42-2)

Safety information for Diphenylsilanediol

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02
GHS Hazard Statements	H228:Flammable solids
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.