3-Hydroxy-1,2,3-benzotriazin-4(3H)-one
Also known as: HOOBT, 3-hydroxy-1,2,3-benzotriazin-4-one, 3-hydroxy-3,4-dihydrobenzotriazine-4-one, 3-hydroxy-3H-benzo[d][1,2,3]triazin-4-one, 1,2,3-Benzotriazin-4(3H)-one, 3-hydroxy-, 3,4-Dihydro-3-hydroxy-4-oxo-1,2,3-benzotriazine, 3-Hydroxy-4-ketobenzotriazine, DHBT, oxohydroxybenzotriazole
3-Hydroxy-1,2,3-benzotriazin-4(3H)-one (CAS 28230-32-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H5N3O2 and a molecular weight of 163.133 g/mol. Key properties include a melting point of 184-189°C, a boiling point of 348.7±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 164.7±23.2 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 28230-32-2
- Jingsj CID
- J-3550-7
- Molecular Formula
- C7H5N3O2
- Molecular Weight
- 163.133 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 184-189°C |
|---|---|
| Boiling Point | 348.7±25.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 164.7±23.2 °C |
| Exact Mass | 163.038177 |
| PSA | 68.01000 |
| LogP | 0.43 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.739 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | STAT5 |
|---|
Customs & Trade Information
| HS Code | 2933699090 |
|---|---|
| Summary | 2933699090 other compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one?
The CAS number of 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one is 28230-32-2.
What are the molecular formula and molecular weight of 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one?
3-Hydroxy-1,2,3-benzotriazin-4(3H)-one has molecular formula C7H5N3O2 and molecular weight 163.133 g/mol.
Is 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one hazardous?
3-Hydroxy-1,2,3-benzotriazin-4(3H)-one has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one?
For 3-Hydroxy-1,2,3-benzotriazin-4(3H)-one, Upstream Products: 2-Amino-N-hydroxybenzamide, Methyl anthranilate; Downstream Products: 1,2,3-Benzotriazin-4(3H)-one, 3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Hydroxy-1,2,3-benzotriazin-4(3H)-one (CAS 28230-32-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3550-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.