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Pentamethyldisiloxane, 95%

CAS: 1438-82-0 | C5H15OSi2 | 147.344 g/mol

$140.70 - $476.63

Chemical Identifiers

CAS 1438-82-0
Molecular Formula C5H15OSi2
Molecular Weight (g/mol) 147.344
MDL Number MFCD00053658
InChI Key XUKFPAQLGOOCNJ-UHFFFAOYSA-N
Synonym pentamethyldisiloxane, disiloxane, pentamethyl, 1,1,1,3,3-pentamethyldisiloxane, dimethyl trimethylsilyloxy silicon, disiloxane, 1,1,1,3,3-pentamethyl, dimethyl trimethylsilyl oxy silyl, dimethylsilyl oxy trimethylsilane
PubChem CID 6327260
IUPAC Name dimethyl(trimethylsilyloxy)silicon
SMILES C[Si](C)O[Si](C)(C)C
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Products 2
Catalog Number Mfr. No. Quantity Price Quantity  
Catalog Number Mfr. No. Quantity Price Quantity  
AAL1657706
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Thermo Scientific Chemicals
L1657706
5 g
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AAL1657714
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Thermo Scientific Chemicals
L1657714
25 g
Each for $476.63
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Description

Description

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

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
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.
Specifications

Chemical Identifiers

1438-82-0
147.344
XUKFPAQLGOOCNJ-UHFFFAOYSA-N
6327260
C[Si](C)O[Si](C)(C)C
C5H15OSi2
MFCD00053658
pentamethyldisiloxane, disiloxane, pentamethyl, 1,1,1,3,3-pentamethyldisiloxane, dimethyl trimethylsilyloxy silicon, disiloxane, 1,1,1,3,3-pentamethyl, dimethyl trimethylsilyl oxy silyl, dimethylsilyl oxy trimethylsilane
dimethyl(trimethylsilyloxy)silicon

Specifications

86°C to 87°C
5 g
MFCD00053658
1734568
pentamethyldisiloxane, disiloxane, pentamethyl, 1,1,1,3,3-pentamethyldisiloxane, dimethyl trimethylsilyloxy silicon, disiloxane, 1,1,1,3,3-pentamethyl, dimethyl trimethylsilyl oxy silyl, dimethylsilyl oxy trimethylsilane
XUKFPAQLGOOCNJ-UHFFFAOYSA-N
dimethyl(trimethylsilyloxy)silicon
6327260
95%
Moisture sensitive
Pentamethyldisiloxane
1438-82-0
C5H15OSi2
UN1993
−19°C (−2°F)
Not miscible or difficult to mix in water.
C[Si](C)O[Si](C)(C)C
147.344
148.35
1.374
0.758
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Safety and Handling

Safety and Handling

GHS H Statement
H225
Highly flammable liquid and vapor.

P210-P233-P240-P241-P242-P243-P280-P303+P361+P353-P370+P378q-P501c

H225

DOTInformation : Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.

EINECSNumber : 215-873-5

TSCA : Yes

Recommended Storage : Ambient temperatures

SDS
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RUO – Research Use Only