Substance profile
2,4,5-Trichlorophenol
2,4,5-Trichlorophenol is needles from alcohol, petroleum ether with a strong phenolic odor.
01 · Identification
What 2,4,5-Trichlorophenol is
2,4,5-Trichlorophenol is needles from alcohol, petroleum ether with a strong phenolic odor. Its molecular formula is C6H3Cl3O and its molecular weight is 197.4 g/mol. It boils at 262 °C, melts at 67 °C.
Under the GHS it carries the signal word Warning. It is classed as hazardous Air Pollutants (HAPs).
02 · Identifiers
2,4,5-Trichlorophenol identifiers and molecular data
2,4,5-Trichlorophenol CAS number and EC number
2,4,5-Trichlorophenol molecular formula and molecular weight
03 · GHS classification
2,4,5-Trichlorophenol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2,4,5-Trichlorophenol pictograms and signal word
2,4,5-Trichlorophenol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
2,4,5-Trichlorophenol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 2,4,5-Trichlorophenol. 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 2,4,5-Trichlorophenol
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 2,4,5-Trichlorophenol 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
2,4,5-Trichlorophenol precautionary statements
CLP Annex VI assigns 16 precautionary statements to 2,4,5-Trichlorophenol. 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
2,4,5-Trichlorophenol 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 | 2,4,5-трихлорофенол |
| Spanish español | 2,4,5-Triclorofenol |
| Czech čeština | 2,4,5-trichlorfenol |
| Danish dansk | 2,4,5-trichlorphenol |
| German Deutsch | 2,4,5-Trichlorphenol |
| Estonian eesti | 2,4,5-triklorofenool |
| Greek ελληνικά | 2,4,5-τριχλωροφαινόλη |
| English English | 2,4,5-trichlorophenol |
| French français | 2,4,5-trichlorophénol |
| Croatian hrvatski | 2,4,5-triklorfenol |
| Italian italiano | 2,4,5-triclorofenolo |
| Latvian latviešu | 2,4,5-trihlorfenols |
| Lithuanian lietuvių | 2,4,5-trichlorfenolis |
| Hungarian magyar | 2,4,5-triklórfenol |
| Maltese Malti | 2,4,5-triklorofenol |
| Dutch Nederlands | 2,4,5-trichloorfenol |
| Polish polski | 2,4,5-trichlorofenol |
| Portuguese português | 2,4,5-triclorofenol |
| Romanian română | 2,4,5-triclorofenol |
| Slovak slovenčina | 2,4,5-trichlórfenol |
| Slovenian slovenščina | 2,4,5-triklorofenol |
| Finnish suomi | 2,4,5-trikloorifenoli |
| Swedish svenska | 2,4,5-triklorfenol |
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
2,4,5-Trichlorophenol GHS label elements
Everything CLP Annex VI fixes for 2,4,5-Trichlorophenol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
2,4,5-Trichlorophenol
- Harmful if swallowed.
- Causes skin irritation.
- Causes serious eye irritation.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Wash … thoroughly after handling.
- 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:
- IF IN EYES:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If skin irritation occurs:
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
- 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 2,4,5-Trichlorophenol in the GHS label constructor →
07 · Health hazards
2,4,5-Trichlorophenol health hazards and exposure limits
2,4,5-Trichlorophenol hazard summary
Exposure to 2,4,5-trichlorophenol may occur during its production or use as a pesticide. Acute (short- term) dermal exposure to 2,4,5-trichlorophenol may burn skin in humans. It also irritates the eyes, nose, pharynx, and lungs in humans. No information is available on the chronic (long-term), reproductive, developmental, or carcinogenic effects of 2,4,5-trichlorophenol in humans. In one study, slight degenerative changes were observed in the liver and kidneys of rats chronically exposed to 2,4,5- trichlorophenol in their diet. EPA has classified 2,4,5-trichlorophenol as a Group D, not classifiable as to human carcinogenicity.
Source: EPA Hazardous Air Pollutants
2,4,5-Trichlorophenol carcinogenicity classification
Evaluation: There is limited evidence in humans for the carcinogenicity of combined exposures to polychlorophenols or to their sodium salts. ... There is inadequate evidence in experimental animals for the carcinogenicity of 2,4,5-trichlorophenol. ... Overall evaluation: Combined exposures to polychlorophenols or to their sodium salts are possibly carcinogenic to humans (Group 2B). /Polychlorophenols/
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
2,4,5-Trichlorophenol 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.
2,4,5-Trichlorophenol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 262 °C (503.6 °F) | HSDB | |
| 252.78 °C (487 °F) | at 760 mmHg | CAMEO | |
| 253 °C (487.4 °F) | ICSC |
2,4,5-Trichlorophenol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 67 °C (152.6 °F) | HSDB | |
| 67.78 °C (154 °F) | CAMEO |
2,4,5-Trichlorophenol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.68 g/cm³ | ICSC | |
| 1.678 g/cm³ | at 25 °C | HSDB |
2,4,5-Trichlorophenol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | In water, 1,200 mg/L at 25 °C | at 25 °C | HSDB |
| In water, 8.82X10+2 mg/kg at 25 °C | at 25 °C | HSDB |
2,4,5-Trichlorophenol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0075 mmHg | at 25 °C | HSDB |
| 0.0218 mmHg | at 25 °C | ICSC | |
| 0.008 mmHg | at 25 °C | DOE PAC |
2,4,5-Trichlorophenol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 133 °C (271.4 °F) | HSDB |
2,4,5-Trichlorophenol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | When heated to decomp, it emits toxic fumes of /hydrogen chloride/and explodes. | HSDB |
2,4,5-Trichlorophenol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 1 (air = 1) | CAMEO | |
| 6.8 (air = 1) | ICSC |
2,4,5-Trichlorophenol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odor threshold in water is as follows: 100 ug/l at 30 °C, 1000 ug/l @ 25 °C. | at 30 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
2,4,5-Trichlorophenol 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.
2,4,5-Trichlorophenol fire potential
Non-combustible. /Trichlorophenol/
Source: Hazardous Substances Data Bank (HSDB)
Solubility
Solubility (g/100 g solvent, 25 °C): 615 acetone; 163 benzene; 51 carbon tetrachloride; 525 ether; 30, 525 denatured alc formula; 615 methanol; 56 liquid petrolatum at 50 °C; 79 soybean oil; 122 toluene
Source: HSDB
10 · Handling and storage
2,4,5-Trichlorophenol storage and handling
2,4,5-Trichlorophenol safe storage
Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
2,4,5-Trichlorophenol storage conditions
Storage temp: ambient
Source: Hazardous Substances Data Bank (HSDB)
2,4,5-Trichlorophenol incompatible materials
... The reaction of 2,4,5-trichlorophenol in an alkaline medium at high temperatures ... /produces/ ... dioxin ... .
Source: Hazardous Substances Data Bank (HSDB)
2,4,5-Trichlorophenol reactivity
2,4,5-TRICHLOROPHENOL is a weak monobasic acid. Incompatible with acid chlorides, acid anhydrides and oxidizing agents. Produces dioxin in alkaline medium at high temperatures (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2,4,5-Trichlorophenol in the storage compatibility matrix →
11 · Questions
2,4,5-Trichlorophenol — frequently asked questions
What is the CAS number of 2,4,5-Trichlorophenol?
The CAS number of 2,4,5-Trichlorophenol is 95-95-4. Its EC number is 202-467-8.
What is the chemical formula of 2,4,5-Trichlorophenol?
The molecular formula of 2,4,5-Trichlorophenol is C6H3Cl3O and its molecular weight is 197.4 g/mol.
What does a 2,4,5-Trichlorophenol label have to show?
Under CLP Annex VI the label for 2,4,5-Trichlorophenol carries the pictograms Exclamation mark and Environment and the signal word is Warning.
Is 2,4,5-Trichlorophenol flammable?
CLP Annex VI assigns 2,4,5-Trichlorophenol 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 133 °C (271.4 °F) (HSDB).
Is 2,4,5-Trichlorophenol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2,4,5-Trichlorophenol. 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 2,4,5-Trichlorophenol?
The boiling point reported for 2,4,5-Trichlorophenol is 262 °C (503.6 °F) (HSDB).
What is the melting point of 2,4,5-Trichlorophenol?
The melting point reported for 2,4,5-Trichlorophenol is 67 °C (152.6 °F) (HSDB).
How should 2,4,5-Trichlorophenol be stored?
Storage temp: ambient (Hazardous Substances Data Bank (HSDB))
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