C6H4N2O5
184.11 g/mol
Industrial ChemicalDanger
2,4-dinitrophenol
CAS51-28-5EC200-087-7
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
chemical intermediate for dyes and preservatives
2,4-Dinitrophenol is an industrial chemical used primarily as an intermediate in the production of dyes and wood preservatives. It is also known for its historical use as a diet pill, which was discontinued due to safety concerns.
chemical intermediate for dyeswood preservativebiocide in metal-working fluids
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
Relevant lists:CN Explosive Precursor Chemicals
CAS 51-28-5
Related Compounds
ReferenceSame Category
3,4-dichlorobenzoic acid
CAS51-44-5
Chemical intermediate for synthesis
ReferenceSame Category
Vinyl neodecanoate
CAS51000-52-3
Vinyl monomer for emulsion polymers
ReferenceSame Category
5-((4-Bromo-2,6-difluorophenyl)difluoromethoxy)-1,2,3-trifluorobenzene
CAS511540-64-0
liquid crystal intermediate
ReferenceSame Category
1-(4-morpholinyl)-2-propen-1-one
CAS5117-12-4
polymer intermediate
Referencestereoisomer of
2,4-Dinitro(²H₃)phenol
CAS93951-77-0
research compound
Safety Reference
Danger
H300Fatal if swallowed
H311Toxic in contact with skin
H331Toxic if inhaled
H372Causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H201Explosive; mass explosion hazard
H301Toxic if swallowed
H373May cause damage to organs through prolonged or repeated exposure
H410Very toxic to aquatic life with long lasting effects
H310Fatal in contact with skin
H315Causes skin irritation
H341Suspected of causing genetic defects
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
Customs Tariff Classification
The international HS code for 2,4-dinitrophenol (CAS 51-28-5) is 2908.99.
HS code (international, 6-digit)
2908.99
EU CN code (8-digit)
2908 99 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2,4-dinitrophenol
InChIKey
UFBJCMHMOXMLKC-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])O
Synonyms (57)
- DNF
- 1'alpha-2,4-Dinitrophenol
- 1,3-DINITRO-4-HYDROXYBENZENE
- 1-Hydroxy-2,4-dinitrobenzene
- 2,4-Dinitrofenol
- 2,4-Dinitrofenol [Dutch]
- 2,4-Dinitrophenol, wetted
- 2,4-Dnp
- 2,4-dinitrophenol
- Aldifen
- Camello mosquito coils
- Chemox
- Chemox PE
- DINITROPHENOL
- DINITROPHENOL [MART.]
- DINITROPHENOL, WETTED
- Dinitrofenolo
- Dinitrofenolo [Italian]
- Dinofan
- Fenoxyl
- Fenoxyl carbon N
- MP-101 (2,4-DINITROPHENOL)
- Mitcal
- Nitro kleenup
- Nitrophen
- Nitrophen (VAN)
- Nitrophene
- Nitrophene (VAN)
- Osmoplastic-R
- Osmotox-Plus
- Phenol, 2,4-dinitro-
- Phenol, alpha-dinitro-
- Solfo Black 2B Supra
- Solfo Black B
- Solfo Black BB
- Solfo Black G
- Solfo Black SB
- Tertrosulfur black pb
- Tertrosulfur pbr
- Tertrosulphur Black PB
- Tertrosulphur PBR
- X 32
- alpha-Dinitrophenol
- tatephosphate