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.
Other names for MCPA (ISO)
- 4-chloro-o-tolyloxyacetic acid
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| 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. |
Precautionary statements: P264, P270, P273, P280, P301, P302, P305, P310, P312, P313, P330, P332, P338, P352, P391, P501
03 · 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.
| 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 | |
| Density | 1.3 g/cm³ | ICSC | |
| 1.56 g/cm³ | at 25 °C | HSDB | |
| 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 | ||
| Vapor pressure | 0.0000059 mmHg | HSDB | |
| Vapor pressure, Pa at 20 °C: (negligible) | at 20 °C | ICSC | |
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling MCPA (ISO)
Storage conditions
Keep in well-ventilated area.
Source: Hazardous Substances Data Bank (HSDB)
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 →