Hexamethyl diorthosilicate

HCID 78080

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Basic information

CAS: 4371-91-9
Standard SMILES: CO[Si](OC)(OC)O[Si](OC)(OC)OC
InChIKey: XOAJIYVOSJHEQB-UHFFFAOYSA-N
Molecular formula: C6H18O7Si2
Average molar mass: 258.37 g/mol
Monoisotopic mass: 258.05910598

Overview

See also: Silicic acid (H6Si2O7), hexamethyl ester (annotation moved to).

Names & identifiers

Preferred name: Hexamethyl diorthosilicate
IUPAC: trimethyl trimethoxysilyl silicate
English name: hexamethyl diorthosilicate
Molecular formula: C6H18O7Si2
Molecular weight: 258.37

Names & synonyms

Hexamethyl diorthosilicateEINECS 224-467-7RefChem:786202224-467-74371-91-9hexamethoxydisiloxanehexamethoxy disiloxanetrimethyl trimethoxysilyl silicateDisiloxane, hexamethoxy-MFCD02912820DTXSID40963105AKOS024390855

Show more names

HexamethoxypropanedisiloxaneSilicic acid (H6Si2O7), hexamethyl esterHexamethyl diorthosilicate Hexamethyl diorthHexamethyl diorthosilicate Hexamethyl diorthosilicate

Trimethyl trimethoxysilyl orthosilicate #Disilicic acid (H6-Si2-O7), hexamethyl esterE78978C6H18O7Si2hexamethyl disilicatetrimethyl trimethoxysilyl sSCHEMBL412622Trimethyl trimethoxysilyl orthosilicate

Database identifiers

CAS: 4371-91-9
PubChem CID: 78080
DTXSID: DTXSID40963105
EC Number: 224-467-7
Nikkaji: J205.750F

Properties

Computed structural properties

Topological polar surface area: 64.6 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 7
Rotatable bonds: 8
Heavy atoms: 15
Formal charge: 0
Complexity: 136

Experimental & physicochemical properties

SpringerMaterials Properties29Si nuclear magnetic resonance spectrum

Physicochemical properties

Boiling point: 73 °C · 73 °C(Press: 3 Torr)
Density: 1.1222 g/cm3 · 1.1222 g/cm3
refractive index: 1.38 · 1.38
form: clear liquid
color: Colorless to Almost colorless
InChI: InChI=1S/C6H18O7Si2/c1-7-14(8-2,9-3)13-15(10-4,11-5)12-6/h1-6H3
InChIKey: XOAJIYVOSJHEQB-UHFFFAOYSA-N
SMILES: [Si](OC)(OC)(OC)O[Si](OC)(OC)OC
Symbol(GHS): 2 · GHS02
Signal word: Warning
Hazard statements: 226 · H226
HS Code: 2931.9 · 2931.90.9010

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 5 items

This chemical does not meet GHS hazard criteria for 71.4% (5 of 7) of all reports.

Danger

H225 (14.3%): Highly Flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 7 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Hazard Classes and CategoriesFlam. Liq. 2 (14.3%)

Safety data

hs_code: 2931.90.9010
Signal word: Warning
Symbol(GHS): GHS02
Hazard statements: H226

Chemistry & industry

Applications

UsesHexamethyl diorthosilicate is mainly used as a silanizing agent in organic synthesis and scientific research experiments.

Upstream & downstream products

Upstream raw materials

HEXAETHYLDISILOXANE

Suppliers49 total

湖北科孚乐材料科技有限公司027-84459282 13720265353 · [email protected]

毕佳索（上海毕得医药科技股份有限公司）400-6005915 · [email protected]

上海麦克林生化科技股份有限公司021-50706066 15221275939 · [email protected]

杭州品高化工有限公司0571-87658025 · [email protected]

Sinco Pharmachem (ShenZhen) R&D Co., Ltd.+86-18603013401 · [email protected]

Related reactions

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Compound notes

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