Basic information
- CAS
18740-59-5- Standard SMILES
Cl[Si](Cc1ccccc1)(Cc1ccccc1)Cc1ccccc1- InChIKey
UTXPCJHKADAFBB-UHFFFAOYSA-N- Molecular formula
- C21H21ClSi
- Average molar mass
- 336.9 g/mol
- Monoisotopic mass
- 336.11010488
Names & identifiers
- Preferred name
- Benzene, 1,1',1''-[(chlorosilylidyne)tris(methylene)]tris-
- IUPAC
- tribenzyl(chloro)silane
- English name
- CHLOROTRIBENZYLSILANE
- Molecular formula
- C21H21ClSi
- Molecular weight
- 336.93
Names & synonyms
Show more names
Database identifiers
- CAS
18740-59-5- PubChem CID
- 87774
- DTXSID
DTXSID0066404- UNII
- VQR444HU54
- EC Number
- 242-549-0
- Nikkaji
- J222.293K
Properties
Computed structural properties
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 0
- Rotatable bonds
- 6
- Heavy atoms
- 23
- Formal charge
- 0
- Complexity
- 274
Physicochemical properties
- Melting point
- 139 · 139-142 °C(lit.)
- Boiling point
- 437.9 · 437.9±14.0 °C(Predicted)
- Density
- 1.096 · 1.096±0.06 g/cm3(Predicted)
- solubility
- sparingly sol cold petroleum ether; moderately sol hot petroleum ether; sol ether.
- FDA UNII
- 444 HU54 · VQR444HU54
- EPA Substance Registry System
- Silane, chlorotris(phenylmethyl)- (18740-59-5)
- Symbol(GHS)
- 5 · GHS05
- Signal word
- Danger
- Hazard statements
- 314 · H314
- Precautionary statements
- 280 · P280-P305+P351+P338-P310
- Hazard Codes
- C
- Risk Statements
- 34 · 34
- Safety Statements
- 26 · 26-36/37/39-45
- RIDADR
- 3261 · UN 3261 8/PG 2
- WGK Germany
- 3 · 3
- F
- 10 · 10-21
- TSCA
- TSCA listed
- HazardClass
- 8 · 8
- PackingGroup
- II
Safety & regulation
GHS classification
GHS Classification
Danger
H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 39 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Safety data
- F
- 10-21
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 3261 8/PG 2
- risk_code
- 34
- Signal word
- Danger
- Symbol(GHS)
- GHS05
- hazard_code
- C
- safety_code
- 26-36/37/39-45
- hazard_class
- 8
- packing_group
- II
- Hazard statements
- H314
- Precautionary statements
- P280-P305+P351+P338-P310
Chemistry & industry
Uses & manufacturing
Applications
UsesTribenzylchlorosilane is widely used as reagent for alcohol protection.
Preparation methods
PreparationIt is prepared by reaction of benzylmagnesium chloride with SiCl4 in ether; separation from mono- and dibenzylated chlorosilane byproducts is then accomplished by fractional distillation (boiling range 300–360 °C/100 mmHg). Other preparations involve the chlorination of tribenzylsilane using Cl2 or an acyl chloride. No yields are reported for any of the above preparative procedures.
Upstream & downstream products
Upstream raw materials
Suppliers18 total
Related reactions
Compound notes
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