1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole
Also known as: 1,1-Dimethyl-1,3-dihydrobenzo[c][1,2]oxasilole, 1,1-dimethyl-1,3-dihydrobenzo[c][1,2]oxasilole, 2,1-Benzoxasilole, 1,3-dihydro-1,1-dimethyl-, 1,1-dimethyl-2-oxa-1-silaindan, 1,1-dimethyl-3H-2,1-benzoxasilole, 1,3-Dihydro-1,1-dimethyl-2,1-benzoxasilole, AMTSi121, D4243
1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole (CAS 321903-29-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H12OSi and a molecular weight of 164.277 g/mol. Key properties include a boiling point of 205.2±20.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 70.5±12.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 321903-29-1
- Jingsj CID
- J-1356861-1
- Molecular Formula
- C9H12OSi
- Molecular Weight
- 164.277 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 205.2±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 70.5±12.0 °C |
| Exact Mass | 164.065735 |
| PSA | 9.23000 |
| LogP | 1.62890 |
| Vapor Pressure | 0.4±0.4 mmHg at 25°C |
| Refractive Index | 1.518 |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole?
The CAS number of 1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole is 321903-29-1.
What are the molecular formula and molecular weight of 1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole?
1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole has molecular formula C9H12OSi and molecular weight 164.277 g/mol.
What are the upstream and downstream products of 1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole?
For 1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole, Upstream Products: 3-Bromoquinoline, 4'-Bromoacetophenone, 3-Bromoaniline; Downstream Products: 2-[Dimethyl(2-thienyl)silyl]benzyl alcohol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,1-Dimethyl-1,3-dihydro-2,1-benzoxasilole (CAS 321903-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356861-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.