Cyclopentasiloxane (CAS 541-02-6) — formula C10H30O5Si5, molecular weight 370.77; category fine chemicals.
Cyclopentasiloxane (CAS 541-02-6) is a chemical raw material in the fine chemicals category. Its molecular formula C10H30O5Si5 comprises 10 C, 30 H, 5 O, 5 Si atoms. Its molecular weight is about 370.77. Reported physicochemical data: melting point around -38 °C, boiling point around 210 °C. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 541-02-6 |
|---|---|
| Molecular Formula | C10H30O5Si5 |
| Molecular Weight | 370.77 |
| Melting Point | -38 °C |
| Boiling Point | 210 °C |
| Applications | CIR ingredient: Cyclopentasiloxane, carrier in personal care products, as a dry cleaning solvent, and to make siloxane polymers, Dry Cleaning, Intermediate in the manufacture of high molecular weight siloxane polymers. Carrier ingredient in personal care products |
| Category | Fine Chemicals|Cosmetic Raw Materials |
Documented applications: CIR ingredient: Cyclopentasiloxane, carrier in personal care products, as a dry cleaning solvent, and to make siloxane polymers, Dry Cleaning, Intermediate in the manufacture of high molecular weight siloxane polymers. Carrier ingredient in personal care products.
Cyclopentasiloxane is a high-value fine compound with CAS registry number 541-02-6 and molecular formula C10H30O5Si5 (molecular weight 370.77), belonging to the fine chemicals segment of chemical raw materials.
CAS number: 541-02-6
Its molecular formula C10H30O5Si5 comprises 10 C, 30 H, 5 O, 5 Si atoms.
Also known as: Cyclopentasiloxane · 环五硅氧烷 · CYCLOPENTASILOXANE/D5
Category: fine chemicals / cosmetic raw materials
The CAS registry number of Cyclopentasiloxane is 541-02-6.
Molecular formula C10H30O5Si5, molecular weight 370.77.
It is also registered under: Cyclopentasiloxane, 环五硅氧烷, CYCLOPENTASILOXANE/D5.
Recorded applications: CIR ingredient: Cyclopentasiloxane, carrier in personal care products, as a dry cleaning solvent, and to make siloxane polymers, Dry Cleaning, Intermediate in the manufacture of high molecular weight siloxane polymers. Carrier ingredient in personal care products.
Category: Fine Chemicals / Cosmetic Raw Materials.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Cyclopentasiloxane (CAS 541-02-6), compiled from public chemistry databases.
| CAS Registry Number | 541-02-6 |
|---|---|
| PubChem CID | 10913 |
| Molecular formula | C10H30O5Si5 |
| IUPAC name | 2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane |
| UNII (FDA) | 0THT5PCI0R |
| Molecular Weight | 370.77 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 0 |
| Exact Mass | 370.09395673 |
| Monoisotopic Mass | 370.09395673 |
| Topological Polar Surface Area | 46.2 |
| Heavy Atom Count | 20 |
| Boiling Point | 210 °C |
|---|---|
| Melting Point | -38 °C |
| Flash Point | 73 °C (163 °F) - closed cup |
| Solubility | In water, 1.7X10-2 mg/L at 25 °C |
| Density | 0.9593 g/cu cm at 20 °C |
| Vapor Pressure | 0.2 [mmHg] |
| Viscosity | 3.9 cSt at 25 °C |
| Surface Tension | 18.5 dyne/cm at 25 °C |
DECAMETHYLCYCLOPENTASILOXANE; 541-02-6; Cyclomethicone 5; Dimethylsiloxane pentamer; Dow corning 345; Cyclic dimethylsiloxane pentamer; NUC silicone VS 7158; Silicon SF 1202; Ciclopentasiloxane; Cyclomethicone D5; Dekamethylcyklopentasiloxan; D5-sil; KF 995; DTXSID1027184; VS 7158; 0THT5PCI0R
| Regulatory & Food Contact | FDA Cumulative Estimated Daily Intake (CEDI): FCS DECAMETHYLCYCLOPENTASILOXANE (D5) CIR / INCI: Cosmetics ingredient -> Antioxidant; Conditioning/Emollient; Moisturizing/Humectant; Other (Specify); Preserva CIR / INCI: Cosmetic ingredients (Cyclopentasiloxane) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Hair conditioning; Emollient; Solvent |
|---|---|
| GHS notification summary | 97% (4427 / 4565) |
| GHS notification summary | 97% (4427 / 4565) |
|---|---|
| Reported hazard statements | H227, H373, H413 |
This chemical does not meet GHS hazard criteria for 97% (4427 of 4565) of all reports.
Reported as not meeting GHS hazard criteria by 4427 of 4565 companies (only 3% companies provided GHS information). For more detailed information, please visit ECHA C&L website.
CYCLOPENTASILOXANE/D5 · CAS 541-02-6 · C10H30O5Si5. UNII 0THT5PCI0R. Boiling Point: 210 °C; Melting Point: -38 °C; Flash Point: 73 °C (163 °F) - closed cup.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 环五硅氧烷/D5