Substance profile
2,4-Dichlorophenol
2,4-Dichlorophenol is colorless crystals or needles with a strong medicinal odor.
01 · Identification
What 2,4-Dichlorophenol is
2,4-Dichlorophenol is colorless crystals or needles with a strong medicinal odor. Its molecular formula is C6H4Cl2O and its molecular weight is 163 g/mol. It boils at 210 °C, melts at 45 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · Identifiers
2,4-Dichlorophenol identifiers and molecular data
2,4-Dichlorophenol CAS number and EC number
2,4-Dichlorophenol molecular formula and molecular weight
03 · GHS classification
2,4-Dichlorophenol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2,4-Dichlorophenol pictograms and signal word
2,4-Dichlorophenol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 3 | H311 | GHS06 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
2,4-Dichlorophenol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H311 | Toxic in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 2,4-Dichlorophenol. 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 2,4-Dichlorophenol
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 2,4-Dichlorophenol 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
2,4-Dichlorophenol precautionary statements
CLP Annex VI assigns 13 precautionary statements to 2,4-Dichlorophenol. 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
2,4-Dichlorophenol 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 | 2,4-дихлорофенол |
| Spanish español | 2,4-Diclorofenol |
| Czech čeština | 2,4-dichlorfenol |
| Danish dansk | 2,4-dichlorphenol |
| German Deutsch | 2,4-Dichlorphenol |
| Estonian eesti | 2,4-diklorofenool |
| Greek ελληνικά | 2,4-διχλωροφαινόλη |
| English English | 2,4-dichlorophenol |
| French français | 2,4-dichlorophénol |
| Croatian hrvatski | 2,4-diklorfenol |
| Italian italiano | 2,4-diclorofenolo |
| Latvian latviešu | 2,4-dihlorfenols |
| Lithuanian lietuvių | 2,4-dichlorfenolis |
| Hungarian magyar | 2,4-diklórfenol |
| Maltese Malti | 2,4-diklorofenol |
| Dutch Nederlands | 2,4-dichloorfenol |
| Polish polski | 2,4-dichlorofenol |
| Portuguese português | 2,4-diclorofenol |
| Romanian română | 2,4-diclorofenol |
| Slovak slovenčina | 2,4-dichlórfenol |
| Slovenian slovenščina | 2,4-diklorofenol |
| Finnish suomi | 2,4-dikloorifenoli |
| Swedish svenska | 2,4-diklorfenol |
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
2,4-Dichlorophenol GHS label elements
Everything CLP Annex VI fixes for 2,4-Dichlorophenol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
2,4-Dichlorophenol
- Toxic in contact with skin.
- Harmful if swallowed.
- Causes severe skin burns and eye damage.
- Toxic to aquatic life with long lasting effects.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- Immediately call a POISON CENTER/doctor/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Do NOT induce vomiting.
- Wash with plenty of water/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 2,4-Dichlorophenol in the GHS label constructor →
07 · Health hazards
2,4-Dichlorophenol health hazards and exposure limits
2,4-Dichlorophenol hazard summary
A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Exposure to small amounts of the molten or liquid form of the substance may result in extensive skin absorption and rapid death. [ICSC] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; May be absorbed through skin; Effects in high-dose animal studies include acute tubular necrosis and convulsions; [MSDSonline] The mechanism of toxicity is uncoupling oxidative phosphorylation; Lethal dose is approximately 21 grams or a skin splash of 15 ml of molten 2,4-DCP; [AIHA] See CHLOROPHENOLS.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
2,4-Dichlorophenol carcinogenicity classification
Under the conditions of these 2-year feed studies, there was no evidence of carcinogenic activity for male F344/N rats fed diets containing 5,000 or 10,000 ppm 2,4-dichlorophenol or for female F344/N rats fed diets containing 2,500 or 5,000 ppm 2,4-dichlorophenol. There was no evidence of carcinogenic activity for male or female B6C3F1 mice fed diets containing 5,000 or 10,000 ppm 2,4-dichlorophenol.
Source: US National Toxicology Program · TR-353: Toxicology and Carcinogenesis Studies of 2,4-Dichlorophenol (CASRN 120-83-2) in F344/N Rats and B6C3F1 Mice (Feed Studies) (1989 )
Evaluation: There is limited evidence in humans for the carcinogenicity of combined exposures to polychlorophenols or to their sodium salts. There is evidence suggesting lack of carcinogenicity of 2,4-dichlorophenol in experimental animals. ... Overall evaluation: Combined exposures to polychlorophenols or to their sodium salts are possibly carcinogenic to humans (Group 2B). /Polychlorophenols and their sodium salts/
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
08 · Physical and chemical properties
2,4-Dichlorophenol 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.
2,4-Dichlorophenol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 210 °C (410 °F) | HSDB | |
| 210 °C (410 °F) | at 760 mmHg | CAMEO |
2,4-Dichlorophenol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 45 °C (113 °F) | HSDB |
2,4-Dichlorophenol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.4 g/cm³ | ICSC | |
| 1.4 g/cm³ | at 15 °C | CAMEO | |
| Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.00 | at 20 °C | ICSC |
2,4-Dichlorophenol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in carbon tetrachloride | HSDB | |
| Soluble in ethanol, benzene, chloroform and ethyl ether. | HSDB | ||
| Soluble in aqueous alkali, oxygenated and chlorinated solvents. | HSDB |
2,4-Dichlorophenol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.075 mmHg | at 20 °C | ICSC |
| 0.09 mmHg | at 25 °C | HSDB |
2,4-Dichlorophenol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 113.89 °C (237 °F) | HSDB |
2,4-Dichlorophenol autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 500 °C (932 °F) | ICSC |
2,4-Dichlorophenol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 5.62 (air = 1) | HSDB | |
| 5.6 (air = 1) | ICSC |
2,4-Dichlorophenol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odor detection in water: 2.10X10-1 ppm (chemically pure) | HSDB | |
| In air: 0.21 ppm | Purity not specified | HSDB | |
| Detection in water: 0.04 mg/L; 0.002 mg/l; 0.0003 mg/L | Purity not specified | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
2,4-Dichlorophenol 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.
2,4-Dichlorophenol fire potential
Combustible when exposed to heat or flame.
Source: Hazardous Substances Data Bank (HSDB)
Fire and explosion
During vacuum fractionation of the mixed dichlorophenols produced by partial hydrolysis of trichlorobenzene, rapid admission of air to the receiver caused the column contents to be forced down into the boiler at 210 °C, and a violent explosion ensued. /Dichlorophenol mixed isomers/
Source: HSDB
10 · Handling and storage
2,4-Dichlorophenol storage and handling
2,4-Dichlorophenol safe storage
Fireproof. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Separated from strong oxidants and food and feedstuffs. Ventilation along the floor.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
2,4-Dichlorophenol storage conditions
SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.
Source: Hazardous Substances Data Bank (HSDB)
2,4-Dichlorophenol incompatible materials
... Can react vigorously with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
2,4-Dichlorophenol reactivity
2,4-DICHLOROPHENOL can react vigorously with oxidizing agents. Can also react with acids or acid fumes. Incompatible with acid chlorides and acid anhydrides. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2,4-Dichlorophenol in the storage compatibility matrix →
11 · Questions
2,4-Dichlorophenol — frequently asked questions
What is the CAS number of 2,4-Dichlorophenol?
The CAS number of 2,4-Dichlorophenol is 120-83-2. Its EC number is 204-429-6.
What is the chemical formula of 2,4-Dichlorophenol?
The molecular formula of 2,4-Dichlorophenol is C6H4Cl2O and its molecular weight is 163 g/mol.
What does a 2,4-Dichlorophenol label have to show?
Under CLP Annex VI the label for 2,4-Dichlorophenol carries the pictograms Skull and crossbones, Corrosion and Environment and the signal word is Danger.
Is 2,4-Dichlorophenol flammable?
CLP Annex VI assigns 2,4-Dichlorophenol 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 113.89 °C (237 °F) (HSDB).
Is 2,4-Dichlorophenol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2,4-Dichlorophenol. 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 boiling point of 2,4-Dichlorophenol?
The boiling point reported for 2,4-Dichlorophenol is 210 °C (410 °F) (HSDB).
What is the melting point of 2,4-Dichlorophenol?
The melting point reported for 2,4-Dichlorophenol is 45 °C (113 °F) (HSDB).
How should 2,4-Dichlorophenol be stored?
SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to 2,4-Dichlorophenol
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