Substance profile
MCPA (ISO)
MCPA (ISO) is white to light brown solid flakes, crystal powder or liquid.
01 · Identification
What MCPA (ISO) is
MCPA (ISO) is white to light brown solid flakes, crystal powder or liquid. It melts at 119 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
MCPA (ISO) identifiers and molecular data
MCPA (ISO) CAS number and EC number
Other names for MCPA (ISO)
- 4-chloro-o-tolyloxyacetic acid
03 · GHS classification
MCPA (ISO) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
MCPA (ISO) pictograms and signal word
MCPA (ISO) 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 1 | H318 | GHS05 |
| 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 |
MCPA (ISO) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H315 | Causes skin irritation. |
| H318 | Causes serious eye damage. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to MCPA (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 MCPA (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 MCPA (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
MCPA (ISO) precautionary statements
CLP Annex VI assigns 16 precautionary statements to MCPA (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.
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
MCPA (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 | MCPA (ISO) 4-хлоро- o -толилоксиоцетна киселина |
| Spanish español | MCPA (ISO) ácido 4-cloro- o -toliloxiacético |
| Czech čeština | MCPA (ISO) (4-chlor-2-methylfenoxy)octová kyselina |
| Danish dansk | MCPA (ISO) 4-chlor-o-tolyloxyeddikesyre |
| German Deutsch | MCPA (ISO) 4-Chlor- o -tolyloxyessigsäure |
| Estonian eesti | MCPA (ISO) 4-kloro- o -tolüüloksüäädikhape |
| Greek ελληνικά | MCPA (ISO) 4-χλωρο- o -τολυλοξυοξικό οξύ |
| English English | MCPA (ISO) 4-chloro- o -tolyloxyacetic acid |
| French français | MCPA (ISO) acide 4-chloro- o -tolyloxyacétique |
| Croatian hrvatski | MCPA (ISO) 4-klor- o -toliloksioctena kiselina |
| Italian italiano | MCPA (ISO) acido 4-cloro- o -tolilossiacetico |
| Latvian latviešu | MCPA (ISO) 4-hlor- o -toliloksietiķskābe |
| Lithuanian lietuvių | MCPA (ISO) 4-chlor- o -toliloksiacto rūgštis |
| Hungarian magyar | MCPA (ISO) 4-klór- o -toliloxiecetsav |
| Maltese Malti | MCPA (ISO) aċidu 4-kloro- o -tolilossiaċetiku |
| Dutch Nederlands | MCPA (ISO) 4-chloor- o -tolyloxyazijnzuur |
| Polish polski | MCPA (ISO) kwas (4-chloro-2-metylofenoksy)octowy |
| Portuguese português | MCPA (ISO) ácido 4-cloro- o- toliloxiacético |
| Romanian română | MCPA (ISO) acid 4-cloro- o -toliloxiacetic |
| Slovak slovenčina | MCPA (ISO) kyselina (4-chlór-2-metylfenoxy)octová |
| Slovenian slovenščina | MCPA (ISO) 4-kloro- o -toliloksiocetna kislina |
| Finnish suomi | MCPA (ISO) 4-kloori- o -tolyylioksietikkahappo |
| Swedish svenska | MCPA (ISO) 4-klor- o -tolyloxiättiksyra |
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
MCPA (ISO) GHS label elements
Everything CLP Annex VI fixes for MCPA (ISO), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
MCPA (ISO)
- Harmful if swallowed.
- Causes skin irritation.
- Causes serious eye damage.
- 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:
- 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:
- 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 MCPA (ISO) in the GHS label constructor →
07 · Health hazards
MCPA (ISO) health hazards and exposure limits
MCPA (ISO) hazard summary
A skin, eye, and respiratory tract irritant; May be toxic to human reproduction or development, based on animal studies; [ICSC] May cause skin, eye, nose, and throat irritation; Effects in high dose oral studies of rats include histopathological changes to liver, kidneys, and spleen; [HSDB] Based on animal studies, not likely to cause congenital defects; No human data available; [REPROTOX] Chlorophenoxy herbicides are possibly carcinogenic to humans (Group 2B), but No adequate data were available on the carcinogenicity of MCPA. [IARC] See 2,4D.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
MCPA (ISO) carcinogenicity classification
Cancer Classification: Not Likely to be Carcinogenic to Humans
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
MCPA (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.
MCPA (ISO) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 118.5 °C (245.3 °F) | range, midpoint shown | HSDB |
| 116 °C (240.8 °F) | range, midpoint shown | HSDB |
MCPA (ISO) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.3 g/cm³ | ICSC | |
| 1.56 g/cm³ | at 25 °C | HSDB |
MCPA (ISO) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Solubility: in water 270 g/l, methanol 340 g/l, benzene 1 g/l | HSDB | |
| INSOL IN CARBON DISULFIDE; SOLUBILITY (G/100 ML): ETHER 77, ETHANOL 153, N-HEPTANE 0.5, TOLUENE 6.2, XYLENE 4.9 | HSDB | ||
| SOL IN CARBON TETRACHLORIDE | HSDB |
MCPA (ISO) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000059 mmHg | HSDB | |
| Vapor pressure, Pa at 20 °C: (negligible) | at 20 °C | ICSC |
MCPA (ISO) corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
MCPA (ISO) 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.
MCPA (ISO) fire potential
Nonflammable
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
MCPA (ISO) storage and handling
MCPA (ISO) safe storage
Provision to contain effluent from fire extinguishing. Separated from strong bases and food and feedstuffs. Store in an area without drain or sewer access. Cool.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
MCPA (ISO) storage conditions
Keep in well-ventilated area.
Source: Hazardous Substances Data Bank (HSDB)
MCPA (ISO) incompatible materials
Reacts with alkalis to form salts
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check MCPA (ISO) in the storage compatibility matrix →
11 · Questions
MCPA (ISO) — frequently asked questions
What is the CAS number of MCPA (ISO)?
The CAS number of MCPA (ISO) is 94-74-6. Its EC number is 202-360-6.
What does a MCPA (ISO) label have to show?
Under CLP Annex VI the label for MCPA (ISO) carries the pictograms Corrosion, Exclamation mark and Environment and the signal word is Danger.
Is MCPA (ISO) flammable?
CLP Annex VI assigns MCPA (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 MCPA (ISO) a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for MCPA (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 MCPA (ISO)?
The melting point reported for MCPA (ISO) is 118.5 °C (245.3 °F), range, midpoint shown (HSDB).
How should MCPA (ISO) be stored?
Keep in well-ventilated area. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to MCPA (ISO)
Keep going: substances starting with M, or search the whole database by name, CAS number, pictogram or signal word.