Substance profile
2,3,4-Trichloro-1-butene
2,3,4-Trichloro-1-butene: colourless liquid.
01 · Identification
What 2,3,4-Trichloro-1-butene is
2,3,4-Trichloro-1-butene: colourless liquid. Its molecular formula is C4H5Cl3 and its molecular weight is 159.44 g/mol. It boils at 159 °C, melts at -52 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
2,3,4-Trichloro-1-butene identifiers and molecular data
2,3,4-Trichloro-1-butene CAS number and EC number
2,3,4-Trichloro-1-butene molecular formula and molecular weight
Other names for 2,3,4-Trichloro-1-butene
- 2,3,4-trichlorobut-1-ene
03 · GHS classification
2,3,4-Trichloro-1-butene hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2,3,4-Trichloro-1-butene pictograms and signal word
2,3,4-Trichloro-1-butene hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 3 | H331 | GHS06 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Carcinogenicity GHS chapter 3.6 | Category 2 | H351 | GHS08 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | 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 |
2,3,4-Trichloro-1-butene hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H331 | Toxic if inhaled. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| 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 2,3,4-Trichloro-1-butene. 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 2,3,4-Trichloro-1-butene
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 2,3,4-Trichloro-1-bute… 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
2,3,4-Trichloro-1-butene precautionary statements
CLP Annex VI assigns 22 precautionary statements to 2,3,4-Trichloro-1-butene. 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
2,3,4-Trichloro-1-butene 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 | 2,3,4-трихлоробут-1-ен |
| Spanish español | 2,3,4-Triclorobut-1-eno |
| Czech čeština | 2,3,4-trichlorbut-1-en |
| Danish dansk | 2,3,4-trichlorbut-1-en |
| German Deutsch | 2,3,4-Trichlorbut-1-en 2,3,4-Trichlor-1-buten |
| Estonian eesti | 2,3,4-triklorobut-1-een |
| Greek ελληνικά | 2,3,4-τριχλωροβουτ-1-ένιο |
| English English | 2,3,4-trichlorobut-1-ene |
| French français | 2,3,4-trichlorobut-1-ène |
| Croatian hrvatski | 2,3,4-triklorbut-1-en |
| Italian italiano | 2,3,4-triclorobut-1-ene |
| Latvian latviešu | 2,3,4-trihlorbut-1-ēns |
| Lithuanian lietuvių | 2,3,4-trichlorbut-1-enas |
| Hungarian magyar | 2,3,4-triklórbut-1-én |
| Maltese Malti | 2,3,4-triklorobut-1-en |
| Dutch Nederlands | 2,3,4-trichloorbut-1-een |
| Polish polski | 2,3,4-trichlorobut-1-en |
| Portuguese português | 2,3,4-triclorobut-1-eno |
| Romanian română | 2,3,4-triclorobut-1-enă |
| Slovak slovenčina | 2,3,4-trichlórbut-1-én |
| Slovenian slovenščina | 2,3,4-triklorobut-1-en |
| Finnish suomi | 2,3,4-triklooribut-1-eeni |
| Swedish svenska | 2,3,4-triklorbut-1-en |
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
2,3,4-Trichloro-1-butene GHS label elements
Everything CLP Annex VI fixes for 2,3,4-Trichloro-1-butene, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
2,3,4-Trichloro-1-butene
- Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Toxic if inhaled.
- Harmful if swallowed.
- May cause respiratory irritation.
- Causes skin irritation.
- Causes serious eye irritation.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Obtain special instructions before use.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- 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:
- IF IN EYES:
- IF exposed or concerned:
- Immediately call a POISON CENTER/doctor/…
- 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 2,3,4-Trichloro-1-butene in the GHS label constructor →
07 · Health hazards
2,3,4-Trichloro-1-butene health hazards and exposure limits
2,3,4-Trichloro-1-butene hazard summary
Danger of cutaneous absorption; MAC-2 (considered to be carcinogenic for man because sufficient data from long-term animal studies or limited evidence from animal studies substantiated by evidence from epidemiological studies indicate that it can make a significant contribution to cancer risk); [MAK] A skin and eye irritant; [CHEMINFO] Vapor can cause lacrimation; Prolonged skin exposure may cause burns to skin; [eChemPortal: SIDSUNEP] A skin, eye, and respiratory tract irritant; The substance may have effects on the respiratory tract, resulting in tissue lesions. [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
2,3,4-Trichloro-1-butene 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.
2,3,4-Trichloro-1-butene boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 158.5 °C (317.3 °F) | range, midpoint shown | ICSC |
| 60 °C (140 °F) | at 20 mmHg (reduced pressure) | HSDB |
2,3,4-Trichloro-1-butene melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -52 °C (-61.6 °F) | ICSC |
2,3,4-Trichloro-1-butene density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.34 g/cm³ | ICSC | |
| 1.343 g/cm³ | at 20 °C | HSDB |
2,3,4-Trichloro-1-butene solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | INSOL IN WATER; SOL IN BENZENE, CHLOROFORM | HSDB | |
| Solubility in water, g/100ml at 20 °C: 0.06 | at 20 °C | ICSC |
2,3,4-Trichloro-1-butene vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.7251 mmHg | at 20 °C | ICSC |
| 1.88 mmHg | Haz-Map |
2,3,4-Trichloro-1-butene flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 63 °C (145.4 °F) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
2,3,4-Trichloro-1-butene storage and handling
2,3,4-Trichloro-1-butene safe storage
Provision to contain effluent from fire extinguishing. Separated from incompatible materials. See Chemical Dangers. Well closed.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Planning storage for a mix of chemicals? Check 2,3,4-Trichloro-1-butene in the storage compatibility matrix →
10 · Questions
2,3,4-Trichloro-1-butene — frequently asked questions
What is the CAS number of 2,3,4-Trichloro-1-butene?
The CAS number of 2,3,4-Trichloro-1-butene is 2431-50-7. Its EC number is 219-397-9.
What is the chemical formula of 2,3,4-Trichloro-1-butene?
The molecular formula of 2,3,4-Trichloro-1-butene is C4H5Cl3 and its molecular weight is 159.44 g/mol.
What does a 2,3,4-Trichloro-1-butene label have to show?
Under CLP Annex VI the label for 2,3,4-Trichloro-1-butene carries the pictograms Skull and crossbones, Health hazard and Environment and the signal word is Danger.
Is 2,3,4-Trichloro-1-butene flammable?
CLP Annex VI assigns 2,3,4-Trichloro-1-butene 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 63 °C (145.4 °F) (ICSC).
Is 2,3,4-Trichloro-1-butene a carcinogen?
CLP Annex VI assigns 2,3,4-Trichloro-1-butene H351 — suspected of causing cancer. That is category 2: the evidence points that way but is not conclusive.
What is the boiling point of 2,3,4-Trichloro-1-butene?
The boiling point reported for 2,3,4-Trichloro-1-butene is 158.5 °C (317.3 °F), range, midpoint shown (ICSC).
What is the melting point of 2,3,4-Trichloro-1-butene?
The melting point reported for 2,3,4-Trichloro-1-butene is -52 °C (-61.6 °F) (ICSC).
Nearby
Substances next to 2,3,4-Trichloro-1-butene
Keep going: substances starting with 0–9, or search the whole database by name, CAS number, pictogram or signal word.