2,3-Dinitrophenol
Also known as: 2,3-DNP, 2,3-Dinitrofenol, 2,3-dinitro-phenol, 2,3-dinitro-pheno, 2.3-Dinitro-1-hydroxy-benzol, anti-dinitrophenol, di-nitro-phenol, HOC6H3(NO2)2-2.3, Phenol, 2,3-dinitro-, 2,3-Dinitrofenol [Czech]
2,3-Dinitrophenol (CAS 66-56-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H4N2O5 and a molecular weight of 184.10600 g/mol. Key properties include a melting point of 143-146ºC, a boiling point of 328.9ºC at 760 mmHg, a density of 1.65 g/cm3 and a flash point of 151.2ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66-56-8
- Jingsj CID
- J-884889-3
- Molecular Formula
- C6H4N2O5
- Molecular Weight
- 184.10600 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 143-146ºC |
|---|---|
| Boiling Point | 328.9ºC at 760 mmHg |
| Density | 1.65 g/cm3 |
| Flash Point | 151.2ºC |
| Exact Mass | 184.01200 |
| PSA | 111.87000 |
| LogP | 2.25500 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H311 — Toxic in contact with skin
- H331 — Toxic if inhaled
- H373 — May cause damage to organs through prolonged exposure
- H411 — Toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2908999090 |
|---|---|
| Summary | 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,3-Dinitrophenol?
The CAS number of 2,3-Dinitrophenol is 66-56-8.
What are the molecular formula and molecular weight of 2,3-Dinitrophenol?
2,3-Dinitrophenol has molecular formula C6H4N2O5 and molecular weight 184.10600 g/mol.
Is 2,3-Dinitrophenol hazardous?
2,3-Dinitrophenol has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3-Dinitrophenol (CAS 66-56-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-884889-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.