1,1,3,3,5,5-Hexamethyltrisiloxane, 95%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11339215	Thermo Scientific Alfa Aesar L16520.14	25 g
11349215	Thermo Scientific Alfa Aesar L16520.22	100 g

Description

1,1,3,3,5,5-Hexamethyltrisiloxane is involved in the preparation of 2-bis(3-allyl-4-hydroxyphenyl)hexafluoropropane, which is associated with inorganic siloxane polymer and used as a coating material for the detection of toxic chemical warfare agents. It is also used as a silylating agent and to prepare 1,5-Bis[2-(1,2-epoxycyclohex-4-yl)ethyl]-1,1,3,3,5,5-hexamethyltrisiloxane from 4-vinyl-1-cyclohexene-1,2-epoxide by hydrosilylation.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
1,1,3,3,5,5-Hexamethyltrisiloxane is involved in the preparation of 2-bis(3-allyl-4-hydroxyphenyl)hexafluoropropane, which is associated with inorganic siloxane polymer and used as a coating material for the detection of toxic chemical warfare agents. It is also used as a silylating agent and to prepare 1,5-Bis[2-(1,2-epoxycyclohex-4-yl)ethyl]-1,1,3,3,5,5-hexamethyltrisiloxane from 4-vinyl-1-cyclohexene-1,2-epoxide by hydrosilylation.

Solubility
Slightly miscible with water.

Notes
Incompatible with strong oxidizing agents and strong acids.

Chemical Identifiers

• CAS: 1189-93-1
• Molecular Weight (g/mol): 206.463
• InChI Key: YTEISYFNYGDBRV-UHFFFAOYSA-N
• PubChem CID: 6327152
• SMILES: C[Si](C)O[Si](C)(C)O[Si](C)C

• Molecular Formula: C6H18O2Si3
• MDL Number: MFCD00039788
• Synonym: 1,1,3,3,5,5-hexamethyltrisiloxane, trisiloxane, 1,1,3,3,5,5-hexamethyl, 1,3,3,5,5-hexamethyltrisiloxane, 2,4,4,6-tetramethyl-3,5-dioxa-2,4,6-trisilaheptane, dimethylbis dimethylsilyloxy silane
• IUPAC Name: [(dimethyl-$l^{3}-silanyl)oxy-dimethylsilyl]oxy-dimethylsilicon

Specifications

• Boiling Point: 128°C
• CAS: 1189-93-1
• MDL Number: MFCD00039788
• Beilstein: 1746341
• Synonym: 1,1,3,3,5,5-hexamethyltrisiloxane, trisiloxane, 1,1,3,3,5,5-hexamethyl, 1,3,3,5,5-hexamethyltrisiloxane, 2,4,4,6-tetramethyl-3,5-dioxa-2,4,6-trisilaheptane, dimethylbis dimethylsilyloxy silane
• SMILES: C[Si](C)O[Si](C)(C)O[Si](C)C
• Molecular Weight (g/mol): 206.463
• Formula Weight: 208.48
• Chemical Name or Material: 1,1,3,3,5,5-Hexamethyltrisiloxane

• Melting Point: -67°C
• Molecular Formula: C6H18O2Si3
• UN Number: UN1993
• Flash Point: 20°C (68°F)
• InChI Key: YTEISYFNYGDBRV-UHFFFAOYSA-N
• IUPAC Name: [(dimethyl-$l^{3}-silanyl)oxy-dimethylsilyl]oxy-dimethylsilicon
• PubChem CID: 6327152
• Percent Purity: 97%

Safety and Handling

GHS H Statement
H225
Highly flammable liquid and vapor.

GHS P Statement
P210-P243
Keep away from heat/sparks/open flames/hot surfaces. - No Smoking.
Take precautionary measures against static discharge.

Danger

missing translation for 'dotInformation' : Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.

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RUO – Research Use Only