Basic information
- CAS
78-62-6- Standard SMILES
CCO[Si](C)(C)OCC- InChIKey
YYLGKUPAFFKGRQ-UHFFFAOYSA-N- Molecular formula
- C6H16O2Si
- Average molar mass
- 148.28 g/mol
- Monoisotopic mass
- 148.09195628
Overview
Dimethyldiethoxysilane appears as a colorless liquid. Less dense than water and insoluble in water. Vapors heavier than air.
Names & identifiers
- Preferred name
- Diethoxydimethylsilane
- IUPAC
- diethoxy(dimethyl)silane
- English name
- Diethoxydimethylsilane
- Molecular formula
- C6H16O2Si
- Molecular weight
- 148.28
Names & synonyms
DiethoxydimethylsilaneDimethyldiethoxysilaneDiethoxy(dimethyl)silaneSilane, diethoxydimethyl-Dimethyl-diethoxysilanDimethyl-diethoxysilan [Czech]CCRIS 1321dimethyl diethoxy silaneDTXSID6052538EINECS 201-127-6NSC 77085UNII-I3931J3ZJ2
Show more names
DMDESdirthoxydimethylsilanekbe22DiethoxydimethyLDimethyldisilanolDiethoxydimethylsi
BRN 1736110I3931J3ZJ2NSC-77085EXP-49SILANE,DIETHOXY,DIMETHYLDTXCID70311114-04-00-04101 (Beilstein Handbook Reference)CD5600
Database identifiers
- CAS
78-62-6- PubChem CID
- 62322
- DTXSID
DTXSID6052538- ChEMBL
CHEMBL3561087- UNII
- I3931J3ZJ2
- EC Number
- 201-127-6
- Nikkaji
- J36.477K
Properties
Computed structural properties
- Topological polar surface area
- 18.5 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 4
- Heavy atoms
- 9
- Formal charge
- 0
- Complexity
- 65.5
Experimental & physicochemical properties
Chemical ClassesFlammable agents - 3rd degree
SpringerMaterials Properties29Si nuclear magnetic resonance spectrum
Density0.86 @25 °C
Boiling Point114 °C @760 [mm Hg]
Vapor Pressure10 [mm Hg] @13.3 °C
Physical Description
Dimethyldiethoxysilane appears as a colorless liquid. Less dense than water and insoluble in water. Vapors heavier than air.
Liquid
Physicochemical properties
- Melting point
- -97 °C · -97°C
- Boiling point
- 114 °C · 114 °C (lit.)
- Density
- 0.865 g/mL · 0.865 g/mL at 25 °C (lit.)
- vapor pressure
- 7 · 7-7910Pa at 20-25℃
- refractive index
- 20 · n20/D 1.381(lit.)
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 2% (5 of 245) of reports.
Danger
H225 (98%): 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, P317, 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 245 reports by companies from 12 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Danger
Hazard information
Regulatory Information
Chemical: Silane, diethoxydimethyl-
Silane, diethoxydimethyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silane, diethoxydimethyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 23-05-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/24954
Diethoxydimethylsilane: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
DOT LabelFlammable Liquid
Fire Hazards
Excerpt from ERG Guide 127 [Flammable Liquids (Water-Miscible)]:
· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Health Hazards
Excerpt from ERG Guide 127 [Flammable Liquids (Water-Miscible)]:
· Inhalation or contact with material may irritate or burn skin and eyes.
Chemistry & industry
Uses & manufacturing
U.S. Production2023: 550,000 - <1,000,000 lb
Industry UsesIntermediate
General Manufacturing Information
All Other Basic Inorganic Chemical Manufacturing
Silane, diethoxydimethyl-: ACTIVE
Applications
UsesDiethoxydimethylsilane is useful for blocking hydroxyl and amino groups in organic synthesis reactions. This silylating step allows subsequent reactions to be carried out which would be adversely affected by the presence of active hydrogen in the hydroxyl or amine groups. Following the reaction step, hydroxyl or amine groups blocked with diethoxydimethylsilane may be recovered by a hydrolysis procedure. It is also used for preparing hydrophobic and release materials as well as enhancing flow of powders.
UsesDiethoxydimethylsilane may be used to modify epoxy resin6 and the surfaces of pure silica and Pd/SiO2 hydrogen gas sensors. Surface modification results in enhanced gas sensing properties of the sensors. It may be used as a precursor for the synthesis of ultrafine SiC powder. Diethoxydimethylsilane is an intermediate silane useful for blocking hydroxyl and amino groups in organic synthesis reactions. This silylating step allows subsequent reactions to be carried out which would be adversely affected by the presence of active hydrogen in the hydroxyl or amine groups. Following the reaction step, hydroxyl or amine groups blocked with diethoxydimethylsilane may be recovered by a hydrolysis procedure. It is also used for preparing hydrophobic and release materials as well as enhancing flow of powders. Studies report its use as a precursor for ORMOSIL (Organically modified SILicates) and thin a-SiOxCyHz films.
General DescriptionA colorless liquid. Flash point 75°F. Less dense than water and insoluble in water. Vapors heavier than air.
Upstream & downstream products
Related reactions
2 records
Compound notes
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