Decamethylcyclopentasiloxane

CAS 541-02-6C10H30O5Si5Chemical Synthesis

Decamethylcyclopentasiloxane (CAS: 541-02-6), with the molecular formula C10H30O5Si5 and a molecular weight of 370.77 g/mol, is a cyclic siloxane. It is valued for its unique physical properties, including a low viscosity and high volatility. This compound serves as a versatile ingredient in various industrial and consumer products, often functioning as a solvent or emollient in formulations.

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Decamethylcyclopentasiloxane (C10H30O5Si5) — chemical structure, CAS 541-02-6; Chemistry, fine chemical supplied by Tech Serve Solutions

Chemical SynthesisOrganometallic ReagentsOrganosiliconSiloxanes

01 /Applications

Cosmetics and Personal Care

Utilised for its emollient and conditioning properties, Decamethylcyclopentasiloxane contributes to the smooth texture and spreadability of skincare products, hair care treatments, and colour cosmetics. It evaporates without leaving a heavy residue.

Industrial Solvents

Its solvency characteristics make it suitable as a carrier fluid or cleaning agent in specific industrial applications. It can dissolve or disperse other substances effectively.

Chemical Synthesis

Decamethylcyclopentasiloxane can be employed as a reagent or building block in the synthesis of more complex organosilicon compounds and polymers. It offers a stable cyclic siloxane structure for further modification.

02 /Properties

Molecular weight	370.77
Empirical formula	C10H30O5Si5
Assay	97%
Boiling point	90 °C/10 mmHg(lit.)
Density	0.958 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.396(lit.)

03 /Safety & handling

Hazard statements

H413May cause long-lasting harmful effects to aquatic life

Protective equipment	Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US)
Flash point	73 °C / 163.4 °F
Transport (UN / ADR)	NA 1993 / PGIII
Water hazard class (WGK, DE)	2

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

541-02-6

MDL number

MFCD00046966

PubChem substance

24868110

Beilstein registry

1800166

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Decamethylcyclopentasiloxane used for?

Decamethylcyclopentasiloxane is used in cosmetics and personal care products for its emollient and conditioning properties, as a solvent in certain industrial applications, and as a reactant in chemical synthesis.

What are the CAS number and formula for Decamethylcyclopentasiloxane?

The CAS number for Decamethylcyclopentasiloxane is 541-02-6, and its molecular formula is C10H30O5Si5.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Decamethylcyclopentasiloxane with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.

How should Decamethylcyclopentasiloxane be handled safely?

Handle Decamethylcyclopentasiloxane with care, using safety goggles, gloves, and appropriate respiratory protection such as a half-mask respirator. It has a flash point of 73 °C and is classified with hazard statement H413, indicating it may cause long-lasting harmful effects to aquatic life.

Is Decamethylcyclopentasiloxane suitable for export?

Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Decamethylcyclopentasiloxane, adhering to all necessary shipping regulations.