Triphenylsilanol

CHEMICAL NAME: Triphenylsilanol

CAS NO.: 791-31-1

ENERGYCO PRODUCT CODE: NJK- 207   

 

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Triphenylsilanol

Base Information

• Chemical Name: Triphenylsilanol

• CAS No.: 791-31-1

• Molecular Formula:C18H16OSi

• Molecular Weight:276.41

• EINECS No.:212-339-3

• Hs Code.:29310095

• Mol file:791-31-1.mol

Synonyms: Silanol,triphenyl- (8CI,9CI);Hydroxytriphenylsilane;LS 6400;NSC 12564;Triphenylhydroxysilane;Triphenylsilyl hydroxide; Z 6800;

Chemical Property of Triphenylsilanol

Chemical Property:

• Appearance/Colour: White crystal solid or powder 

• Vapor Pressure:9.79E-07mmHg at 25deg;C 

• Melting Point:150-153 deg;C(lit.) 

• Refractive Index:1.628 

• Boiling Point:388.6 deg;C at 760 mmHg 

• PKA:13.39plusmn;0.58(Predicted) 

• Flash Point:188.8 deg;C 

• PSA：20.23000 

• Density:1.13 g/cm3 

• LogP:1.64580 

• Storage Temp.: Store below +30deg;C. 

• Sensitive: Air Sensitive 

• Water Solubility: reacts 

Purity/Quality: 98% Triphenylsilanol 

Safety Information:

• Pictogram(s):Xi 

• Hazard Codes: Xi 

• Statements:36/37/38 

• Safety Statements:26-36 

Useful:

• Chemical Properties White crystal solid or powder

• Uses Triphenylsilanol is used as a water surrogate for regioselective Pd catalyzed allylations. A thick on germanium substrates have been produced by the electron bombardment of an evaporated thin film of triphenylsilanol.

• Definition ChEBI: An organosilanol in which silicon is bonded to a single hydroxy function and to three phenyl groups.

• Purification Methods It is purified by dissolving in pet ether, passing through an Al2O3 column, eluting thoroughly with CCl4 to remove impurities and then eluting the silanol with MeOH. Evaporation gives crystals with m 153-155o. It can be recrystallised from pet ether, CCl4 or from *benzene or Et2O/pet ether (1:1). It has also been recrystallised by partial freezing from the melt to constant melting point. [George & Gilman J Am Chem Soc 81 3288 1959, IR: Tatlock & Rochow J Org Chem 17 1555 1952 and Richards & Thompson J Chem Soc 124 1949, Beilstein 16 IV 1480.]

•  InChI:InChI=1/C18H16OSi/c19-20(16-10-4-1-5-11-16,17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15,19H

The following are related public data of the application of triphenylsilanol as a coating additive:

• High-temperature resistant coating based on phenyl silicone resin

For example, the phenyl silicone resin is synthesized with triphenylsilanol as a raw material and can be used in high-temperature resistant coatings within the range of 400 - 650 degrees Celsius. After curing, the pencil hardness is ≥ 2H, the viscosity is 20 - 50 seconds (measured by Ford cup No. 4), and the acid value is ≤ 4mgKOH/g.

• Improving the heat resistance of coatings

When 5% - 10% of triphenylsilanol is added to a certain organosilicon high-temperature resistant coating, the coating can be used for a long time at 400°C with the coating remaining intact without peeling or discoloration. In contrast, the coating without this additive shows obvious discoloration and peeling at around 300°C.

• Enhancing the adhesion of coatings

When an appropriate amount of triphenylsilanol is added to an epoxy coating, according to the ASTM D4541 standard for pull-off tests, the adhesion can be increased from 5MPa to more than 8MPa, effectively enhancing the bonding strength between the coating and the substrate and making it less likely to peel off in a high-temperature environment.

• Improving the weather resistance of coatings 

When triphenylsilanol is added to an acrylate coating, after QUV accelerated aging tests, the gloss retention rate of the coating with the additive can still reach more than 70% after 1000 hours of aging, while the gloss retention rate of the coating without the additive is less than 50%, effectively reducing phenomena such as powdering and cracking.