Pentamethyldisiloxane

Product Name: Pentamethyldisiloxane
CAS No.: 1438-82-0
Chemical Name: Pentamethyldisiloxane
Synonyms: DK541;DKSI147;DKSI005;DKFELEX0132;PENTAMETHYLDISILOXANE;pentamethyl-disiloxan;Disiloxane,pentamethyl-;Pentamethyldisiloxane,95%;PENTAMETHYLDISILOXANE 97+%;Trimethylsiloxydimethylsilane
CBNumber: CB9413159
Molecular Formula: C5H16OSi2
Formula Weight: 148.35
MOL File: 1438-82-0.mol

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Pentamethyldisiloxane Property

Boiling point:: 86 °C (lit.)
Density: 0.760 g/mL at 20 °C (lit.)
refractive index: n20/D 1.373
Flash point:: -9°C
storage temp.: 2-8°C, stored under nitrogen
form: clear liquid
color: Colorless to Almost colorless
Specific Gravity: 0.758
Water Solubility: Not miscible or difficult to mix in water.
Sensitive: Moisture Sensitive
Hydrolytic Sensitivity: 3: reacts with aqueous base
BRN: 1734568
InChI: InChI=1S/C5H16OSi2/c1-7(2)6-8(3,4)5/h7H,1-5H3
InChIKey: AOJHDNSYXUZCCE-UHFFFAOYSA-N
SMILES: [Si](C)(C)(C)O[SiH](C)C
EPA Substance Registry System: Disiloxane, pentamethyl- (1438-82-0)

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Safety

Hazard Codes: F
Risk Statements: 11
Safety Statements: 16-23-24/25
RIDADR: UN 1993 3/PG 2
WGK Germany: 3
F: 10-21
TSCA: Yes
HazardClass: 3
PackingGroup: II
HS Code: 29319090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word: Danger
Hazard statements: H225Highly Flammable liquid and vapour
Precautionary statements: P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 76840
Product name: Pentamethyldisiloxane
Purity: ≥95.0%
Packaging: 5ml
Price: $97.6
Updated: 2025/07/31

TCI Chemical

Product number: P1535
Product name: 1,1,1,3,3-Pentamethyldisiloxane
Purity: >95.0%(GC)
Packaging: 5mL
Price: $46
Updated: 2025/07/31

TCI Chemical

Product number: P1535
Product name: 1,1,1,3,3-Pentamethyldisiloxane
Purity: >95.0%(GC)
Packaging: 25mL
Price: $135
Updated: 2025/07/31

TRC

Product number: P274100
Product name: Pentamethyldisiloxane
Packaging: 250mg
Price: $120
Updated: 2021/12/16

Chem-Impex

Product number: 40479
Product name: 1,1,1,3,3-Pentamethyldisiloxane,95%(GC)
Purity: 95%(GC)
Packaging: 25ML
Price: $194.88
Updated: 2021/12/16

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Pentamethyldisiloxane Chemical Properties,Usage,Production

Uses

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

Description

Pentamethyldisiloxane, is an organosilicon compound used in synthesis of siloxane-polyether copolymer surfactants. Pentamethyldisiloxane can also be used as source of the trimethylsilyl functional group in organic synthesis.

Synthesis

Take prepared potassium trimethylsilanolate 1.12kg in 2L of anhydrous tetrahydrofuran, was added dropwise with stirring dimethylchlorosilane1kg, dropwise, room temperature reaction 1h, filtered, concentrated, extracted with ether, dried and concentrated to give a high purity of 98% or more of pentamethyl disiloxane 1.2kg.

Pentamethyldisiloxane Preparation Products And Raw materials

Raw materials

Preparation Products

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Pentamethyldisiloxane Suppliers

Americas 1 China 153 Germany 2 India 4 Japan 1 Singapore 1 Switzerland 2 United Kingdom 4 United States 14 Global 182

Shanghai Gileader Advanced Material Technology Co.,Ltd

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Email: 823898732@qq.com
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Jinan Shicheng Organic Silicon Technology Co., Ltd

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Zhuangming New Material Technology Jiangsu Co., Ltd.

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J & K SCIENTIFIC LTD.

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Meryer (Shanghai) Chemical Technology Co., Ltd.

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Alfa Aesar

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TCI (Shanghai) Development Co., Ltd.

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Beijing HwrkChemical Technology Co., Ltd

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ProdList: 9400
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Energy Chemical

Tel: 021-021-58432009 400-005-6266
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Shanghai Sinch Parmaceuticals Tech. Co. Ltd.

Tel: +86-21-54098501
Fax: +86-21-54096319
Email: sales@sinch.com.cn
Country: China
ProdList: 11598
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View Lastest Price from Pentamethyldisiloxane manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

Product: Pentamethyl Disiloxane 1438-82-0
Price: US $1.10-9.90/kg
Min. Order: 1kg
Purity: 99%min
Supply Ability: 100kg
Release date: 2025-08-18

Hebei Zhuanglai Chemical Trading Co Ltd

Product: Pentamethyl-disiloxan 1438-82-0
Price: US $79.00-38.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-12-24

Hebei Zhuanglai Chemical Trading Co Ltd

Product: Pentamethyldisiloxane 1438-82-0
Price: US $79.00-38.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-12-24

1438-82-0, PentamethyldisiloxaneRelated Search:

Sodium thiosulfate pentahydrate 1,3-BIS(3-AMINOPROPYL)TETRAMETHYLDISILOXANE 1,3-Bis(chloromethyl)-1,1,3,3-tetramethyldisiloxane DECAMETHYLTETRASILOXANE 1,3-BIS(DICHLOROMETHYL)-1,1,3,3-TETRAMETHYLDISILOXANE Hexamethyldisiloxane HEXAPHENYLDISILOXANE 1,3-BIS(4-HYDROXYBUTYL)TETRAMETHYLDISILOXANE HEXAETHYLDISILOXANE 3,3-DIPHENYLHEXAMETHYLTRISILOXANE 1,3-bis(3-glycidoxypropyl)tetramethyldisiloxane Divinyltetramethyldisiloxane DODECAMETHYLPENTASILOXANE Octamethyltrisiloxane 1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane 1,3-BIS(ACETOXYMETHYL)-1,1,3,3-TETRAMETHYLDISILOXANE BIS(BROMOMETHYL)TETRAMETHYLDISILOXANE 1,3-BIS(3-CYANOPROPYL)TETRAMETHYLDISILOXANE

pentamethyl-disiloxan

PENTAMETHYLDISILOXANE

PENTAMETHYLDISILOXANE 97+%

(Trimethylsiloxy)dimethylsilane

1,1,1,3,3-Pentamethylpropanedisiloxane

2,2,4-Trimethyl-3-oxa-2,4-disilapentane

Trimethylsiloxydimethylsilane

Dimethyl(trimethylsilyloxy)silane

1,1,1,3,3-Pentamethyldisiloxane

1,1,1,3,3-Pentamethyl-disiloxane

Disiloxane,pentamethyl-

[(dimethylsilyl)oxy]trimethylsilane

Disiloxane, 1,1,1,3,3-pentamethyl-

DK541

DKFELEX0132

DKSI147

DKSI005

Pentamethyldisiloxane,95%

1438-82-0

CH33SiOSiHCH32

C5H16OSi2

Organosilicon

Organometallic Reagents

Siloxanes

Chemical Synthesis

Organometallic Reagents

Organosilicon

Siloxanes