Selenium oxychloride
Also known as: Seleninyl chloride, Selenious dichloride, Selenous dichloride, Selenium oxydichloride, Seleninyl dichloride
Selenium oxychloride (CAS 7791-23-3) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Cl2OSe and a molecular weight of 165.865 g/mol. Key properties include a melting point of 9 °C, a boiling point of 180.0±0.0 °C at 760 mmHg, a density of 2.43 g/mL at 25 °C(lit.) and a flash point of 176.4°C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H331 — Toxic if inhaled and H373 — May cause damage to organs through prolonged exposure. It is listed by 1 supplier, from 222.00 to 260.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 7791-23-3
- Jingsj CID
- J-27139-2
- Molecular Formula
- Cl2OSe
- Molecular Weight
- 165.865 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 97% 10g | ¥2,220.00 | $33.22 /gBest ¥222.00/g CNY | CN China MOQ 10g | |
Made to Order | 97% 5g | ¥1,180.00 | $35.32 /g ¥236.00/g CNY | CN China MOQ 10g | |
In Stock | 97% 1g | ¥260.00 | $38.91 /g ¥260.00/g CNY | CN China MOQ 10 |
Physicochemical Properties
| Melting Point | 9 °C |
|---|---|
| Boiling Point | 180.0±0.0 °C at 760 mmHg |
| Density | 2.43 g/mL at 25 °C(lit.) |
| Flash Point | 176.4°C |
| Exact Mass | 165.849136 |
| PSA | 17.07000 |
| LogP | 0.87940 |
| Vapor Pressure | 1.2±0.3 mmHg at 25°C |
| Refractive Index | 1.651 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H331 — Toxic if inhaled
- H373 — May cause damage to organs through prolonged exposure
- H410 — Very toxic to aquatic life with long lasting effects
Frequently Asked Questions
What is the CAS number of Selenium oxychloride?
The CAS number of Selenium oxychloride is 7791-23-3.
What are the molecular formula and molecular weight of Selenium oxychloride?
Selenium oxychloride has molecular formula Cl2OSe and molecular weight 165.865 g/mol.
Which suppliers offer Selenium oxychloride?
1 supplier(s) listed; reference unit price ¥222.00–260.00 /g.
Is Selenium oxychloride hazardous?
Selenium oxychloride has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H331 — Toxic if inhaled; H373 — May cause damage to organs through prolonged exposure.
What are the upstream and downstream products of Selenium oxychloride?
For Selenium oxychloride, Upstream Products: Selenium dioxide, Selenium(IV) chloride (-8 mesh), selenium chloride; Downstream Products: Disulfur dichloride, Sulfur trioxide, Selenium(IV) chloride (-8 mesh).
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Selenium oxychloride (CAS 7791-23-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27139-2 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.