2-Chloro-1,3,2-benzodioxaphosphole
Also known as: o-Phenylene phosphorochloridite, 1,2-Phenylene phosphorochloridite, Catechyl phosphorus chloride, 2-Chloro-1,3,2-benzodioxaphosphole, 1,3,2-Benzodioxaphosphole, 2-chloro-, MFCD00005853, EINECS 216-690-3
2-Chloro-1,3,2-benzodioxaphosphole (CAS 1641-40-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H4ClO2P and a molecular weight of 174.52200 g/mol. Key properties include a melting point of 30-35 °C(lit.), a boiling point of 80 °C20 mm Hg(lit.), a density of 1.466 g/mL at 25 °C(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 1641-40-3
- Jingsj CID
- J-22219-5
- Molecular Formula
- C6H4ClO2P
- Molecular Weight
- 174.52200 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 30-35 °C(lit.) |
|---|---|
| Boiling Point | 80 °C20 mm Hg(lit.) |
| Density | 1.466 g/mL at 25 °C(lit.) |
| Flash Point | >110.0 °C |
| Exact Mass | 173.96400 |
| PSA | 32.05000 |
| LogP | 2.92350 |
| Vapor Pressure | 0mmHg at 25°C |
| Refractive Index | n20/D 1.571(lit.) |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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 2-Chloro-1,3,2-benzodioxaphosphole?
The CAS number of 2-Chloro-1,3,2-benzodioxaphosphole is 1641-40-3.
What are the molecular formula and molecular weight of 2-Chloro-1,3,2-benzodioxaphosphole?
2-Chloro-1,3,2-benzodioxaphosphole has molecular formula C6H4ClO2P and molecular weight 174.52200 g/mol.
Is 2-Chloro-1,3,2-benzodioxaphosphole hazardous?
2-Chloro-1,3,2-benzodioxaphosphole has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Chloro-1,3,2-benzodioxaphosphole (CAS 1641-40-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22219-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.