CAS 556-71-8

Octadecamethylcyclononasiloxane

Description:

Octadecamethylcyclononasiloxane, commonly referred to as D9, is a cyclic siloxane compound characterized by its unique structure comprising nine silicon atoms and a total of eighteen methyl groups. This compound is part of the larger family of siloxanes, which are known for their flexibility, thermal stability, and low surface tension. D9 is typically a colorless, odorless liquid at room temperature and exhibits low volatility. Its chemical properties include high hydrophobicity and resistance to water and many chemicals, making it useful in various applications, including personal care products, lubricants, and as a silicone-based polymer additive. Additionally, D9 has garnered attention in environmental studies due to its persistence and potential bioaccumulation in aquatic organisms. Regulatory scrutiny has increased regarding its environmental impact, leading to ongoing research into its behavior and degradation in ecosystems. Overall, Octadecamethylcyclononasiloxane is notable for its unique chemical structure and diverse applications, alongside considerations for its environmental implications.

Formula: C₁₈H₅₄O₉Si₉

InChI: InChI=1/C18H54O9Si9/c1-28(2)19-29(3,4)21-31(7,8)23-33(11,12)25-35(15,16)27-36(17,18)26-34(13,14)24-32(9,10)22-30(5,6)20-28/h1-18H3

InChI key: InChIKey=ISXOGOLHEGHGQF-UHFFFAOYSA-N

SMILES: C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

Synonyms:

• 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-Octadecamethylcyclononasiloxane
• Cyclononasiloxane, 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-Octadecamethyl-
• Cyclononasiloxane, octadecamethyl-
• Octamethylcyclononasiloxane
• Octadecamethylcyclononasiloxane
• Octadecamethylcyclononasiloxane
• Octadecamethylnonasiloxane
• 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18-octadecamethyl-1,3,5,7,9,11,13,15,17-nonaoxa-2,4,6,8,10,12,14,16,18-nonasilacyclooctadecane
• Octadecamethylcyclooctadecanenonasiloxane

Octadecamethylcyclononasiloxane

CAS: 556-71-8

Formula: C₁₈H₅₄O₉Si₉

Purity: >98.0%(GC)

Color and Shape: Colorless to Light yellow clear liquid

Molecular weight: 667.39

Ref: 3B-O0425

Octadecamethylcyclononasiloxane

CAS: 556-71-8

Formula: C₁₈H₅₄O₉Si₉

Molecular weight: 667.39

Ref: 4Z-S-153002

Octadecamethylcyclononasiloxane

CAS: 556-71-8

Color and Shape: Neat

Ref: 04-CA15710098

Octadecamethylnonasiloxane

Controlled Product

CAS: 556-71-8

Formula: C₁₈H₅₄O₉Si₉

Color and Shape: Colourless To Light Yellow

Molecular weight: 667.39

Ref: TR-O401575

Octadecamethylcyclononasiloxane

CAS: 556-71-8

Octadecamethylcyclononasiloxane is a silicon-containing molecule, which has been shown to have antihypertensive activity. It works by inhibiting the production of angiotensin II, a key regulator of blood pressure, and thereby reducing blood pressure. Octadecamethylcyclononasiloxane also exhibits tumor-promoting activities in some animal models. This molecule is used as a surface active agent in many household products such as dishwashing detergents, shampoos, and cosmetics. It is also used as an acid catalyst in organic synthesis and in the manufacture of magnetic particles for use in biotechnology.
A fatty acid ester with functional groups that can be found on its surface may contribute to octadecamethylcyclononasiloxane's cancer-promoting activities.

Formula: C₁₈H₅₄O₉Si₉

Purity: Min. 95%

Color and Shape: Clear Liquid

Molecular weight: 667.39 g/mol

Ref: 3D-FO166641

Octadecamethylcyclononasiloxane

CAS: 556-71-8

Organo-inorganic compounds, nesoi

Formula: C₁₈H₅₄O₉Si₉

Molecular weight: 666.16912

Ref: 45-1800202