Substance profile
4-CPA (ISO)
4-CPA (ISO) is prisms or needles from water.
01 · Identification
What 4-CPA (ISO) is
4-CPA (ISO) is prisms or needles from water. Its molecular formula is C8H7ClO3 and its molecular weight is 186.59 g/mol. It melts at 157 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
4-CPA (ISO) identifiers and molecular data
4-CPA (ISO) CAS number and EC number
4-CPA (ISO) molecular formula and molecular weight
Other names for 4-CPA (ISO)
- 4-chlorophenoxyacetic acid
03 · GHS classification
4-CPA (ISO) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
4-CPA (ISO) pictograms and signal word
4-CPA (ISO) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
4-CPA (ISO) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
This page lists only the codes assigned to 4-CPA (ISO). 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 4-CPA (ISO)
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 4-CPA (ISO) 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
4-CPA (ISO) precautionary statements
CLP Annex VI assigns 4 precautionary statements to 4-CPA (ISO). 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.
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
4-CPA (ISO) 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 | 4-CPA (ISO) 4-хлорофеноксиоцетна киселина |
| Spanish español | 4-CPA (ISO) ácido 4-clorofenoxiacético |
| Czech čeština | 4-CPA (ISO) (4-chlorfenoxy)octová kyselina |
| Danish dansk | 4-CPA (ISO) 4-chlorphenoxyeddikesyre |
| German Deutsch | 4-CPA (ISO) 4-Chlorphenoxyessigsäure |
| Estonian eesti | 4-CPA (ISO) 4-klorofenoksüäädikhape |
| Greek ελληνικά | 4-CPA (ISO) 4-χλωροφαινοξυοξικό οξύ |
| English English | 4-CPA (ISO) 4-chlorophenoxyacetic acid |
| French français | 4-CPA (ISO) acide 4-chlorophénoxyacétique |
| Croatian hrvatski | 4-CPA (ISO) 4-klorfenoksioctena kiselina |
| Italian italiano | 4-CPA (ISO) acido 4- cloro-fenossiacetico |
| Latvian latviešu | 4-CPA (ISO) 4-hlorfenoksietiķskābe |
| Lithuanian lietuvių | 4-CPA (ISO) 4-chlorofenoksiacto rūgštis |
| Hungarian magyar | 4-CPA (ISO) 4-klórfenoxiecetsav |
| Maltese Malti | 4-CPA (ISO) aċidu 4-klorofenossiaċetiku |
| Dutch Nederlands | 4-CPA (ISO) 4-chloorfenoxyazijnzuur |
| Polish polski | 4-CPA (ISO) kwas (4-chlorofenoksy)octowy |
| Portuguese português | 4-CPA (ISO) ácido 4-clorofenoxiacético |
| Romanian română | 4-CPA (ISO) acid 4-clorofenoxiacetic |
| Slovak slovenčina | 4-CPA (ISO) kyselina (4-chlórfenoxy)octová |
| Slovenian slovenščina | 4-CPA (ISO) 4-klorofenoksiocetna kislina |
| Finnish suomi | 4-CPA (ISO) 4-kloorifenoksietikkahappo |
| Swedish svenska | 4-CPA (ISO) 4-klorfenoxiättiksyra |
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
4-CPA (ISO) GHS label elements
Everything CLP Annex VI fixes for 4-CPA (ISO), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
4-CPA (ISO)
- Harmful if swallowed.
- Do not eat, drink or smoke when using this product.
- IF SWALLOWED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 4-CPA (ISO) in the GHS label constructor →
07 · Health hazards
4-CPA (ISO) health hazards and exposure limits
4-CPA (ISO) hazard summary
Caused severe eye irritation but no skin irritation in studies with rabbits; Effects in high-dose 13 week feeding studies with rats include decrease in weight gain and increased incidence of slight hepatic lymphohistiocytic infiltrates and slight individual hepatocellular necrosis in males (NOEL = 2000 ppm, LOEL = 8000 ppm); [HSDB] Chlorophenoxy herbicides are possibly carcinogenic to humans (Group 2B); [IARC] See 2,4D.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
4-CPA (ISO) 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.
4-CPA (ISO) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 156.5 °C (313.7 °F) | HSDB |
4-CPA (ISO) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | In water, 957 mg/L at 25 °C | at 25 °C | HSDB |
4-CPA (ISO) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.000318 mmHg | Haz-Map |
4-CPA (ISO) odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odorless | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Questions
4-CPA (ISO) — frequently asked questions
What is the CAS number of 4-CPA (ISO)?
The CAS number of 4-CPA (ISO) is 122-88-3. Its EC number is 204-581-3.
What is the chemical formula of 4-CPA (ISO)?
The molecular formula of 4-CPA (ISO) is C8H7ClO3 and its molecular weight is 186.59 g/mol.
What does a 4-CPA (ISO) label have to show?
Under CLP Annex VI the label for 4-CPA (ISO) carries the pictogram Exclamation mark and the signal word is Warning.
Is 4-CPA (ISO) flammable?
CLP Annex VI assigns 4-CPA (ISO) 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.
Is 4-CPA (ISO) a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 4-CPA (ISO). 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 4-CPA (ISO)?
The melting point reported for 4-CPA (ISO) is 156.5 °C (313.7 °F) (HSDB).
Nearby
Substances next to 4-CPA (ISO)
Keep going: substances starting with 0–9, or search the whole database by name, CAS number, pictogram or signal word.