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Alfa Aesar™ Pentamethyldisiloxane, 95%

Chemical Identifiers

Chemical Name or Material Pentamethyldisiloxane
CAS 1438-82-0
Molecular Formula (CH3)3SiOSiH(CH3)2
Formula Weight 148.35
MDL Number MFCD00053658
UN Number UN1993
Beilstein 1734568
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAL1657706

  SDS
alfa aesar™
L1657706
5g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAL1657714

  SDS
alfa aesar™
L1657714
25g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.
Description & Specifications

Specifications

Formula Weight 148.35
Chemical Name or Material Pentamethyldisiloxane
Molecular Formula (CH3)3SiOSiH(CH3)2
Health Hazard 3 GHS P Statement
P210-P280-P240-P303+P361+P353-P403+P235-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
Ground/bond container and receiving equipment.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
Store in a well-ventilated place. Keep cool.
Dispose of contents/container in accordance with local/regional/national/international regulations.
Health Hazard 1 Danger
Boiling Point 86° to 87°C
Assay 95%
MDL Number MFCD00053658
TSCA TSCA
CAS 1438-82-0
Flash Point −19°C (−2°F)
Health Hazard 2 GHS H Statement
H225
Highly flammable liquid and vapor.
DOT Information Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.
Beilstein 1734568
Quantity 5g
UN Number UN1993

Applications
Pentamethyldisiloxane is used in the synthesis of siloxane-polyether copolymer surfactants. It is also used as source of trimethylsilyl functional group in organic synthesis.

Solubility
Not miscible or difficult to mix in water.

Notes
It is sensitive to moisture. Keep container tightly closed in a dry and well-ventilated place. Store under dry inert gas. Incompatible with oxidizing agents.

Safety and Handling

Danger

GHS P Statement
P210-P280-P240-P303+P361+P353-P403+P235-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Wear protective gloves/protective clothing/eye protection/face protection.
Ground/bond container and receiving equipment.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
Store in a well-ventilated place. Keep cool.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H225
Highly flammable liquid and vapor.