Triphenylsilane
- CAS No.
- 789-25-3
- Chemical Name:
- Triphenylsilane
- Synonyms
- DK914;DK021;DKSI076;NSC 12565;Triphenysilane;triphenyl-silan;TRIPHENYLSILANE;Tri(phenyl)silicon;SILANE, TRIPHENYL-;Triphenylsilane >
- CBNumber:
- CB4691556
- Molecular Formula:
- C18H16Si
- Molecular Weight:
- 260.41
- MDL Number:
- MFCD00003003
- MOL File:
- 789-25-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Triphenylsilane 97% | 148504 | 5g | $49.1 |
| Triphenylsilane 97% | 148504 | 25g | $158 |
| Triphenylsilane >96.0%(GC) | T0661 | 5g | $37 |
| Triphenylsilane >96.0%(GC) | T0661 | 25g | $141 |
| Triphenylsilane, min. 97% min.97% | 93-1467 | 10g | $48 |
| More product size | |||
| Melting point | 43-45 °C (lit.) |
|---|---|
| Boiling point | 152 °C/2 mmHg (lit.) |
| refractive index | 1.6160 |
| Flash point | 169 °F |
| storage temp. | Inert atmosphere,2-8°C |
| solubility | sol most organic solvents. |
| form | Powder |
| color | off-white |
| Water Solubility | REACTS |
| Sensitive | Air Sensitive |
| Hydrolytic Sensitivity | 3: reacts with aqueous base |
| BRN | 978182 |
| InChI | 1S/C18H16Si/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15,19H |
| InChIKey | AKQNYQDSIDKVJZ-UHFFFAOYSA-N |
| SMILES | c1ccc(cc1)[SiH](c2ccccc2)c3ccccc3 |
| CAS DataBase Reference | 789-25-3(CAS DataBase Reference) |
| FDA UNII | UQL9QY2CS8 |
| NIST Chemistry Reference | Silane, triphenyl-(789-25-3) |
| EPA Substance Registry System | Silane, triphenyl- (789-25-3) |
| UNSPSC Code | 12352002 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319 | |||||||||
| Precautionary statements | P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-37 | |||||||||
| WGK Germany | 1 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29310095 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 |
|||||||||
| NFPA 704 |
|
Triphenylsilane price More Price(51)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 148504 | Triphenylsilane 97% | 789-25-3 | 5g | $49.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | 148504 | Triphenylsilane 97% | 789-25-3 | 25g | $158 | 2026-04-30 | Buy |
| TCI Chemical | T0661 | Triphenylsilane >96.0%(GC) | 789-25-3 | 5g | $37 | 2026-04-30 | Buy |
| TCI Chemical | T0661 | Triphenylsilane >96.0%(GC) | 789-25-3 | 25g | $141 | 2026-04-30 | Buy |
| Strem Chemicals | 93-1467 | Triphenylsilane, min. 97% min.97% | 789-25-3 | 10g | $48 | 2026-04-30 | Buy |
Triphenylsilane Chemical Properties,Uses,Production
Chemical Properties
Triphenylsilane is an off-white solid that is soluble in most organic solvents. It is used in certain cases for the preparation of triphenylsilyl ethers, which serve as alcohol-protecting groups. The triphenylsilyl group is considerably more stable (about 400 times) than the TMS group toward acidic hydrolysis.
Uses
Triphenylsilane acts as a reactant or reagent for catalytic hydrogen deuterium exchange reactions of silanes, to be oxidized by carbon nanotube-gold nanohybrids, for hydrolysis by ruthenium complexes, for hydrosilylation to produce enolsilanes, for synthesis of bromosilanes, for ozone oxidation of silyl-alkenes for synthesis of α-O-silylated acyloin derivatives. It is used to synthesize hydrido silyl and bis(silyl) bis(imidazolinylidene) nickel complexes.
Application
More effective radical-based reagent for reduction of organic halides than the trialkylsilanes.
Compares well with tri-n-butyltin hydride in reduction of enones to ketones.
Shows good selectivity in the reduction of cyclic hemiacetals.
Converts O-acetyl furanoses and pyranoses to deoxy sugars.
Hexaphenyldisiloxane can be conveniently made by the action of aqueous alkali on triphenylsilane, Ph3SiH.
Tristriphenylsilylbismuth, (Ph3Si)3Bi, is made similarly from triethylbismuth and triphenylsilane: Et3Bi+3Ph3SiH==Heat==(Ph3Si)3Bi+3EtH.
Preparation
Triphenylsilane can be synthesized by reducing phenylsilane (PhSiH3) with a reducing agent such as lithium aluminum hydride (LiAlH4). The overall reaction equation is as follows:
3 PhSiH3 + 2 LiAlH4 → C18H16Si + 2 LiH + 2 AlH3
This reaction is typically carried out in anhydrous conditions and under inert gas atmosphere.
reaction suitability
reagent type: reductant
storage
This reagent is stable in the air. Because the toxicogical properties are unknown, it should be handled in a well-ventilated fume hood. Contact with the eyes and skin should be avoided.
Purification Methods
Purify it by recrystallisation from MeOH. [Gilman & Zuech J Am Chem Soc 81 5925 1959, Westermark Acta Chem Scand 9 947 1955, IR: Kaplan J Am Chem Soc 76 5880 1954, Beilstein 16 II 605, 16 III 1199, 16 IV 1369.]
Triphenylsilane Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | sales@chemdad.com | China | 39927 | 58 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 13901 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21588 | 55 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29815 | 58 |
| Zhejiang ZETian Fine Chemicals Co. LTD | +8618957127338 | stella@zetchem.com | China | 2994 | 58 |
| Jinan Carbotang Biotech Co.,Ltd. | +8615866703830 | figo.gao@foxmail.com | China | 8497 | 58 |
| HaBo Hong Kong Co., Limited. | +86-25-18512596065 | info@habotech.com | CHINA | 933 | 58 |
| Accela ChemBio Inc. | +1-858-6993322 | info@accelachem.com | United States | 21193 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8615060885618 | sales@amoychem.com | China | 6366 | 58 |
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- Nov 4，2025
View Lastest Price from Triphenylsilane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-07-02 | TRIPHENYLSILANE
789-25-3
|
US $0.00 / KG | 1KG | 98.00% | 1000KG /month | Shanghai Daken Advanced Materials Co.,Ltd | |
 |
2019-07-06 | Triphenylsilane
789-25-3
|
US $2.00 / KG | 1KG | 99% | customsie | Career Henan Chemical Co |
-
- TRIPHENYLSILANE
789-25-3
- US $0.00 / KG
- 98.00%
- Shanghai Daken Advanced Materials Co.,Ltd
-
- Triphenylsilane
789-25-3
- US $2.00 / KG
- 99%
- Career Henan Chemical Co
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