Substance profile
2-amino-4,6-dinitrophenol
2-amino-4,6-dinitrophenol is dark red needles from alc, prisms from chloroform.
01 · Identification
What 2-amino-4,6-dinitrophenol is
2-amino-4,6-dinitrophenol is dark red needles from alc, prisms from chloroform. Its molecular formula is C6H5N3O5 and its molecular weight is 199.12 g/mol. It melts at 169 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
2-amino-4,6-dinitrophenol identifiers and molecular data
2-amino-4,6-dinitrophenol CAS number and EC number
2-amino-4,6-dinitrophenol molecular formula and molecular weight
Other names for 2-amino-4,6-dinitrophenol
- picramic acid
03 · GHS classification
2-amino-4,6-dinitrophenol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2-amino-4,6-dinitrophenol pictograms and signal word
2-amino-4,6-dinitrophenol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Explosives GHS chapter 2.1 | Category 1.1 | H201 | GHS01 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 3 | H412 | — |
2-amino-4,6-dinitrophenol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H201 | Explosive; mass explosion hazard. |
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H412 | Harmful to aquatic life with long lasting effects. |
This page lists only the codes assigned to 2-amino-4,6-dinitrophenol. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for 2-amino-4,6-dinitrophenol
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of 2-amino-4,6-dinitrophe… issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
2-amino-4,6-dinitrophenol precautionary statements
CLP Annex VI assigns 13 precautionary statements to 2-amino-4,6-dinitrophenol. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
2-amino-4,6-dinitrophenol name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | 2-амино-4,6-динитрофенол пикраминова киселина |
| Spanish español | 2-Amino-4,6-dinitrofenol ácido picrámico |
| Czech čeština | 2-amino-4,6-dinitrofenol pikramová kyselina |
| Danish dansk | 2-amino-4,6-dinitrophenol picraminsyre |
| German Deutsch | 2-Amino-4,6-dinitrophenol Pikraminsäure |
| Estonian eesti | 2-amino-4,6-dinitrofenool pikraamhape |
| Greek ελληνικά | 2-αμινο-4,6-δινιτροφαινόλη πικραμικό οξύ |
| English English | 2-amino-4,6-dinitrophenol picramic acid |
| French français | 2-amino-4,6-dinitrophénol acide picramique |
| Croatian hrvatski | 2-amino-4,6-dinitrofenol pikraminska kiselina |
| Italian italiano | 2-amino-4,6-dinitrofenolo acido picrammico |
| Latvian latviešu | 2-amino-4,6-dinitrofenols pikramīnskābe |
| Lithuanian lietuvių | 2-amino-4,6-dinitrofenolis pikramo rūgštis |
| Hungarian magyar | 2-amino-4,6-dinitrofenol pikraminsav |
| Maltese Malti | 2-ammino-4,6-dinitrofenol aċidu pikramiku |
| Dutch Nederlands | 2-amino-4,6-dinitrofenol picraminezuur |
| Polish polski | 2-amino-4,6-dinitrofenol kwas pikraminowy |
| Portuguese português | 2-amino-4,6-dinitrofenol ácido picrâmico |
| Romanian română | 2-amino-4,6-dinitrofenol acid picramic |
| Slovak slovenčina | 2-amino-4,6-dinitrofenol (s obsahom < 20 % vody) kyselina pikramová |
| Slovenian slovenščina | 2-amino-4,6-dinitrofenol pikraminska kislina |
| Finnish suomi | 2-amino-4,6-dinitrofenoli pikramiinihappo |
| Swedish svenska | 2-amino-4,6-dinitrofenol pikramsyra |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
2-amino-4,6-dinitrophenol GHS label elements
Everything CLP Annex VI fixes for 2-amino-4,6-dinitrophenol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
2-amino-4,6-dinitrophenol
- Explosive; mass explosion hazard.
- Harmful if inhaled.
- Harmful in contact with skin.
- Harmful if swallowed.
- Harmful to aquatic life with long lasting effects.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Wash with plenty of water/…
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 2-amino-4,6-dinitrophenol in the GHS label constructor →
07 · Physical and chemical properties
2-amino-4,6-dinitrophenol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
2-amino-4,6-dinitrophenol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 169 °C (336.2 °F) | HSDB | |
| 168.89 °C (336 °F) | CAMEO |
2-amino-4,6-dinitrophenol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | @ 22-25 °C, 0.065 g dissolves in 100 ml H2O | HSDB | |
| More sol in hot water than in cold water | HSDB | ||
| Soluble in benzene & ether | HSDB |
2-amino-4,6-dinitrophenol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 4.2e-7 mmHg | Haz-Map |
2-amino-4,6-dinitrophenol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 210 °C (410 °F) | HSDB |
2-amino-4,6-dinitrophenol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | MAY EXPLODE WHEN SHOCKED OR HEATED. | HSDB | |
| A powerful explosive when dry. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
08 · Fire and explosion
2-amino-4,6-dinitrophenol fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
2-amino-4,6-dinitrophenol fire potential
...IN CONTACT WITH OPEN FLAME IN GLASS TUBE OR BEAKER, IGNITES RAPIDLY & BURNS RELATIVELY FAST...
Source: Hazardous Substances Data Bank (HSDB)
09 · Handling and storage
2-amino-4,6-dinitrophenol storage and handling
2-amino-4,6-dinitrophenol incompatible materials
Combustible when exposed to ... oxidizers.
Source: Hazardous Substances Data Bank (HSDB)
2-amino-4,6-dinitrophenol reactivity
2-AMINO-4,6-DINITROPHENOL should not be subjected to strong shock or heat, and is a dangerous fire risk. This compound reacts with strong oxidizing agents. (NTP, 1992). Explodes if dried and exposed to heat, flame, friction or shock. Wetting greatly reduces this tendency. Treat as an explosive. Mixing with reducing agents, including hydrides, sulfides, nitrides, and alkali metals may lead to a vigorous reaction that culminates in a detonation. May explode in the presence of a base such as sodium hydroxide or potassium hydroxide, even in the presence of water or organic solvents. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. An amino acid (reacts as an acid with bases and as a base with acids).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-amino-4,6-dinitrophenol in the storage compatibility matrix →
10 · Transport
2-amino-4,6-dinitrophenol UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
2-amino-4,6-dinitrophenol under UN 3317 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| 2-AMINO-4,6-DINITROPHENOL, WETTED with not less than 20 % water, by mass | 4.1 | D | I | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 4.1 is “Flammable solids, self-reactive substances, polymerizing substances and solid desensitized explosives” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| 2-Amino-4,6-Dinitrophenol, wetted with not less than 20 percent water by mass | 4.1 | I | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 4.1 is “Flammable solid” (49 CFR 173.2).
11 · Questions
2-amino-4,6-dinitrophenol — frequently asked questions
What is the CAS number of 2-amino-4,6-dinitrophenol?
The CAS number of 2-amino-4,6-dinitrophenol is 96-91-3. Its EC number is 202-544-6.
What is the chemical formula of 2-amino-4,6-dinitrophenol?
The molecular formula of 2-amino-4,6-dinitrophenol is C6H5N3O5 and its molecular weight is 199.12 g/mol.
What does a 2-amino-4,6-dinitrophenol label have to show?
Under CLP Annex VI the label for 2-amino-4,6-dinitrophenol carries the pictograms Exploding bomb and Exclamation mark and the signal word is Danger.
Is 2-amino-4,6-dinitrophenol flammable?
CLP Annex VI assigns 2-amino-4,6-dinitrophenol no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 210 °C (410 °F) (HSDB).
Is 2-amino-4,6-dinitrophenol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2-amino-4,6-dinitrophenol. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of 2-amino-4,6-dinitrophenol?
The melting point reported for 2-amino-4,6-dinitrophenol is 169 °C (336.2 °F) (HSDB).
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