MCPB
Synonym(s):4-(4-Chloro-o-tolyloxy)butyric acid;4-(4-Chloro-2-methylphenoxy)butyric acid
- CAS NO.:94-81-5
- Empirical Formula: C11H13ClO3
- Molecular Weight: 228.67
- MDL number: MFCD00002820
- EINECS: 202-365-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-04 15:10:57
What is MCPB?
Chemical properties
Colorless crystal; melts at 100 °C (212 °F);practically insoluble in water (44 mg/L at25 °C/77 °F); readily dissolves in most organicsolvents.
The Uses of MCPB
MCPB is used for research regarding herbicides to control weed in crop field.
The Uses of MCPB
Herbicide.
What are the applications of Application
MCPB is used for research regarding herbicides
Definition
ChEBI: A monocarboxylic acid that is butyric acid substituted by a 2-methyl-4-chlorophenoxy group at position 4.
Hazard
Toxic by ingestion.
Health Hazard
MCPB is structurally similar to 2,4-DB,except one methyl group substituting a Clatom in the ring. Toxic properties and thesymptoms are similar to 2,4-DB. It is mod-erately toxic by ingestion and possibly otherroutes of exposure. Skin contact can causeirritation.
LD50 oral (rat): 680 mg/kg
LD50 oral (mouse): 800 mg/kg.
Agricultural Uses
Herbicide: A metabolite of MCPA (see above). MCPB is a phenoxy herbicide produced as a sodium salt and an acid. Herbicide registered for use on peas prior to flowering. There are no residential uses of MCBP. Target organisms: post-emergence control of Canadian thistle, buttercup, mustard, purslane, ragweed, common lambsquarters, pigweed, smartweed, sowthistle, morning glory and other broad leaf weeds[83] .
Trade name
2 M-4Kh-M; 2M4KhM; 2 M-4XM; 4MCPB; BEXANE; BEXONE; U46 MCPB; LEGUMEX; PDQ; THITROL; TRIFOLEX; TRITROL; TROTOX
Properties of MCPB
| Melting point: | 101-102℃ (ligroine ) |
| Boiling point: | 327.31°C (rough estimate) |
| Density | 1.2076 (rough estimate) |
| refractive index | 1.4530 (estimate) |
| storage temp. | 0-6°C |
| pka | 4.58±0.10(Predicted) |
| form | neat |
| Water Solubility | 44mg/L(room temperature) |
| BRN | 2215202 |
| EPA Substance Registry System | MCPB (94-81-5) |
Safety information for MCPB
| Signal word | Warning |
| Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 ![]() Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. |
Computed Descriptors for MCPB
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