Methyl Trimethicone (CAS 17928-28-8) — formula C10H30O3Si4, molecular weight 310.68; category cosmetic raw materials.
Methyl Trimethicone (CAS 17928-28-8) is a chemical raw material in the cosmetic raw materials category. Its molecular formula C10H30O3Si4 comprises 10 C, 30 H, 3 O, 4 Si atoms. Its molecular weight is about 310.68. Reported physicochemical data: melting point around -105 °F (NTP, 1992), boiling point around 381 °F at 760 mmHg (NTP, 1992). 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 | 17928-28-8 |
|---|---|
| Molecular Formula | C10H30O3Si4 |
| Molecular Weight | 310.68 |
| Melting Point | -105 °F (NTP, 1992) |
| Boiling Point | 381 °F at 760 mmHg (NTP, 1992) |
| Applications | Diluent, Household Products: Cosmetics product ingredient: 1, 5-heptamethyl-3-trisiloxane (Methyl trimethicone), Product count: 2, U.S. Production: 2023: 75, 000 - <500 |
| Category | Cosmetic Raw Materials |
Documented applications: Diluent, Household Products: Cosmetics product ingredient: 1, 5-heptamethyl-3-trisiloxane (Methyl trimethicone), Product count: 2, U.S. Production: 2023: 75, 000 - <500.
Methyl Trimethicone is a cosmetic-ingredient compound with CAS registry number 17928-28-8 and molecular formula C10H30O3Si4 (molecular weight 310.68), belonging to the cosmetic raw materials segment of chemical raw materials.
CAS number: 17928-28-8
Its molecular formula C10H30O3Si4 comprises 10 C, 30 H, 3 O, 4 Si atoms.
Also known as: Methyl Trimethicone · 甲基聚三甲基硅氧烷 · Methyltris(trimethylsiloxy)silane
Category: cosmetic raw materials
The CAS registry number of Methyl Trimethicone is 17928-28-8.
Molecular formula C10H30O3Si4, molecular weight 310.68.
It is also registered under: Methyl Trimethicone, 甲基聚三甲基硅氧烷, Methyltris(trimethylsiloxy)silane.
Recorded applications: Diluent, Household Products: Cosmetics product ingredient: 1, 5-heptamethyl-3-trisiloxane (Methyl trimethicone), Product count: 2, U.S. Production: 2023: 75, 000 - <500.
Category: 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 Methyl Trimethicone (CAS 17928-28-8), compiled from public chemistry databases.
| CAS Registry Number | 17928-28-8 |
|---|---|
| PubChem CID | 28838 |
| Molecular formula | C10H30O3Si4 |
| IUPAC name | trimethyl-[methyl-bis(trimethylsilyloxy)silyl]oxysilane |
| UNII (FDA) | S73ZQI0GXM |
| Molecular Weight | 310.68 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 6 |
| Exact Mass | 310.12720095 |
| Monoisotopic Mass | 310.12720095 |
| Topological Polar Surface Area | 27.7 |
| Heavy Atom Count | 17 |
| Boiling Point | 381 °F at 760 mmHg (NTP, 1992) |
|---|---|
| Melting Point | -105 °F (NTP, 1992) |
| Flash Point | 187 °F (NTP, 1992) |
METHYLTRIS(TRIMETHYLSILOXY)SILANE; Methyl trimethicone; 1,1,1,3,5,5,5-Heptamethyl-3-((trimethylsilyl)oxy)trisiloxane; methyl tris(trimethylsiloxy)silane; Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-[(trimethylsilyl)oxy]-; 1,1,1,3,5,5,5-Heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane; UNII-S73ZQI0GXM; S73ZQI0GXM; EINECS 241-867-7; Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-((trimethylsilyl)oxy)-; tris(trimethylsiloxy)methylsilane; DTXSID9025669; TMF-1.5; EC 241-867-7; Methyl tris-(trimethylsilyloxy)silane; RefChem:158355
| GHS notification summary | 21.4% (41 / 192) |
|---|
| GHS notification summary | 21.4% (41 / 192) |
|---|---|
| Reported hazard statements | H226 (78.1%), H315 (22.4%), H319 (22.4%), H335 (21.9%), H373 (55.7%) |
This chemical does not meet GHS hazard criteria for 21.4% (41 of 192) of reports.
H226 (78.1%): Flammable liquid and vapor [Warning Flammable liquids]
Methyltris(trimethylsiloxy)silane · CAS 17928-28-8 · C10H30O3Si4. UNII S73ZQI0GXM. Boiling Point: 381 °F at 760 mmHg (NTP, 1992); Melting Point: -105 °F (NTP, 1992); Flash Point: 187 °F (NTP, 1992).
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 甲基三(三甲基硅氧基)硅烷