7-Chloro-2H-1,4-benzoxazin-3(4H)-one

Also known as: 7-Chloro-2H-benzo[b][1,4]oxazin-3(4H)-one, 7-Chloro-2H-1,4-benzoxazine, 7-chloro-3,4-dihydro-2H-1,4-benzoxazin-3-one, 2H-1,4-Benzoxazin-3(4H)-one, 7-chloro-, 7-chloro-1,4-benzoxazin-3-one, 3,4-dihydro-7-chloro-3-oxo-2H-1,4-benzoxazine

7-Chloro-2H-1,4-benzoxazin-3(4H)-one (CAS 27320-99-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H6ClNO2 and a molecular weight of 183.592 g/mol. Key properties include a boiling point of 367.8±42.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 176.2±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 27320-99-6
Jingsj CID: J-1520360-8
Molecular Formula: C₈H₆ClNO₂
Molecular Weight: 183.592 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	367.8±42.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	176.2±27.9 °C
Exact Mass	183.008713
PSA	38.33000
LogP	1.68
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.579
Storage Conditions	2-8°C

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 7-Chloro-2H-1,4-benzoxazin-3(4H)-one?

The CAS number of 7-Chloro-2H-1,4-benzoxazin-3(4H)-one is 27320-99-6.

What are the molecular formula and molecular weight of 7-Chloro-2H-1,4-benzoxazin-3(4H)-one?

7-Chloro-2H-1,4-benzoxazin-3(4H)-one has molecular formula C8H6ClNO2 and molecular weight 183.592 g/mol.

What are the upstream and downstream products of 7-Chloro-2H-1,4-benzoxazin-3(4H)-one?

For 7-Chloro-2H-1,4-benzoxazin-3(4H)-one, Upstream Products: 2-Amino-5-chlorophenol, Chloroacetyl chloride, 4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "7-Chloro-2H-1,4-benzoxazin-3(4H)-one (CAS 27320-99-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520360-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.