Dodecamethylpentasiloxane | CAS No. 141-63-9

Q: What are the physical and chemical properties of Dodecamethylpentasiloxane (CAS: 141-63-9)?

Dodecamethylpentasiloxane (CAS: 141-63-9) is a colorless, odorless, and viscous liquid at room temperature. It has a high molecular weight and is essentially non-volatile. Chemically, it is a member of the cyclic silicone family with low reactivity. It is poorly soluble in water but soluble in organic solvents. Its high thermal stability and low toxicity make it useful in various applications.

Q: How is Dodecamethylpentasiloxane (CAS: 141-63-9) typically synthesized?

Dodecamethylpentasiloxane (CAS: 141-63-9) is synthesized by the condensation polymerization of pentamethylsiloxane. This process involves the use of a catalyst such as dibutyltin dilaurate to promote the reaction. The product is obtained with high selectivity and yield, making it suitable for industrial production.

Q: What industries use Dodecamethylpentasiloxane (CAS: 141-63-9)?

Dodecamethylpentasiloxane (CAS: 141-63-9) is used in various industries. It is a key component in the production of silicone rubbers and adhesives due to its excellent thermal and chemical stability. It is also employed in the manufacturing of lubricants, sealants, and coatings. Additionally, it finds applications in the pharmaceuticals, electronics, and polymer industries.

Q: What precautions should be taken when handling Dodecamethylpentasiloxane (CAS: 141-63-9)?

When handling Dodecamethylpentasiloxane (CAS: 141-63-9), it is important to wear appropriate personal protective equipment (PPE), including gloves and safety goggles. Store it in a cool, well-ventilated area away from sources of ignition. In case of a spill, use appropriate containment equipment and follow the safety data sheet (SDS) for proper disposal. Always handle in a fume hood to minimize inhalation exposure.

Dodecamethylpentasiloxane

Basic Information

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CAS Number

141-63-9

Molecular Formula

C12H36O4Si5

Molecular Weight

384.85 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Hydrocarbons

Basic Physical Properties

Melting Point

-81°C

Boiling Point

229°C

Refractive Index

n20/D 1.392(lit.)

Vapor Pressure

<1 mmHg ( 20 °C)

SMILES

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C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C

InChI

InChI=1S/C12H36O4Si5/c1-17(2,3)13-19(7,8)15-21(11,12)16-20(9,10)14-18(4,5)6/h1-12H3

InChIKey

FBZANXDWQAVSTQ-UHFFFAOYSA-N

LogP

4.828000000000005

Topological Polar Surface Area

36.92 Å²

Hydrogen Bond Donor/Acceptor

0 / 4

Complexity

313

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

Pentasiloxane,1,1,1,3,3,5,5,7,7,9,9,9-dodecamethyl-
Dodecamethyl Pentasiloxane
bis[[dimethyl(trimethylsilyloxy)silyl]oxy]-dimethylsilane
dodecamethyl-pentasiloxane
DC 200 Fluid 2
KF 96L2CS
Penta(dimethylsiloxane)
dodecamethyl-pentasiloxan
Pentasiloxane, dodecamethyl-
Dodecamethylnonanepentasiloxane
1,1,1,3,3,5,5,7,7,9,9,9-Dodecamethylpentasiloxane
Dodecamethylpentasiloxane
Dodecamethylpentasiloxane,97%
Pentasiloxane, 1,1,1,3,3,5,5,7,7,9,9,9-dodecamethyl-
0QDQ2VQ5YJ
Dodecamethylpentasiloxane,
dodecamethyl pentasiloxane
DODECAMETHYLPENTASILOXANE

MDL Number

MFCD00039795

Customs Code

2934999090

FAQ

What are the physical and chemical properties of Dodecamethylpentasiloxane (CAS: 141-63-9)?

Dodecamethylpentasiloxane (CAS: 141-63-9) is a colorless, odorless, and viscous liquid at room temperature. It has a high molecular weight and is essentially non-volatile. Chemically, it is a member of the cyclic silicone family with low reactivity. It is poorly soluble in water but soluble in organic solvents. Its high thermal stability and low toxicity make it useful in various applications.

How is Dodecamethylpentasiloxane (CAS: 141-63-9) typically synthesized?

Dodecamethylpentasiloxane (CAS: 141-63-9) is synthesized by the condensation polymerization of pentamethylsiloxane. This process involves the use of a catalyst such as dibutyltin dilaurate to promote the reaction. The product is obtained with high selectivity and yield, making it suitable for industrial production.

What industries use Dodecamethylpentasiloxane (CAS: 141-63-9)?

Dodecamethylpentasiloxane (CAS: 141-63-9) is used in various industries. It is a key component in the production of silicone rubbers and adhesives due to its excellent thermal and chemical stability. It is also employed in the manufacturing of lubricants, sealants, and coatings. Additionally, it finds applications in the pharmaceuticals, electronics, and polymer industries.

What precautions should be taken when handling Dodecamethylpentasiloxane (CAS: 141-63-9)?

When handling Dodecamethylpentasiloxane (CAS: 141-63-9), it is important to wear appropriate personal protective equipment (PPE), including gloves and safety goggles. Store it in a cool, well-ventilated area away from sources of ignition. In case of a spill, use appropriate containment equipment and follow the safety data sheet (SDS) for proper disposal. Always handle in a fume hood to minimize inhalation exposure.