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Merck

25190

4-Chloro-2-methylphenoxyacetic acid

technical, ≥95.0% (T)

Synonym(s):

4-Chloro-o-tolyloxyacetic acid, MCPA

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About This Item

Linear Formula:
ClC6H3(CH3)OCH2CO2H
CAS Number:
94-74-6
Molecular Weight:
200.62
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
57648118
EC Number:
202-360-6
Beilstein/REAXYS Number:
2051752
MDL number:
MFCD00004306

Product Name

4-Chloro-2-methylphenoxyacetic acid, technical, ≥95.0% (T)

InChI key

WHKUVVPPKQRRBV-UHFFFAOYSA-N

InChI

1S/C9H9ClO3/c1-6-4-7(10)2-3-8(6)13-5-9(11)12/h2-4H,5H2,1H3,(H,11,12)

SMILES string

Cc1cc(Cl)ccc1OCC(O)=O

grade

technical

assay

≥95.0% (T)

form

solid

mp

114-118 °C (lit.)

solubility

water: insoluble(lit.)

functional group

carboxylic acid
chloro

Quality Level

100

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General description

4-Chloro-2-methylphenoxyacetic acid (MPCA) is a herbicide. Various MCPA-mineralising bacterial combinations has been tested using a high-throughput microplate radiorespirometric mineralisation assay. Degradation mechanisms of OH and MCPA including molecular form and anionic form have been studied. Rapid and sensitive LC-electrospray tandem mass spectrometry method has been developed for the quantitation of MCPA in water and soil samples.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 2

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG4807
BCCG0676
BCCG0675
BCBZ7838
BCBV3948

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Urse S Krüger et al.
Pest management science, 71(2), 257-265 (2014-04-17)
The herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) is found frequently in Danish groundwater in concentrations exceeding the EU threshold limit of 0.1 µg L(-1) . Groundwater is used for drinking water, and one potential remediation strategy is bioaugmentation using inoculation of sand filters at
G G Bond et al.
British journal of industrial medicine, 50(4), 340-348 (1993-04-01)
For the purpose of assessing the human carcinogenic potential of the chlorophenoxy herbicides MCPA, MCPP, and 2,4-DP, the relevant epidemiological and toxicological evidence is reviewed. These compounds have not produced tumours in animal studies conducted under current test guidelines, giving
Nora Badawi et al.
Environmental pollution (Barking, Essex : 1987), 170, 32-38 (2012-07-06)
Soil suspensions (slurries) are commonly used to estimate the potential of soil microbial communities to mineralize organic contaminants. The preparation of soil slurries disrupts soil structure, however, potentially affecting both the bacterial populations and their protozoan predators. We studied the
O Pozo et al.
Journal of chromatography. A, 923(1-2), 75-85 (2001-08-21)
A rapid and sensitive LC-electrospray tandem mass spectrometry method has been developed for the quantitation of 4-chloro-2-methylphenoxyacetic acid (MCPA) and 4-chloro-2-methylphenol in both water and soil samples. Soil samples were extracted in alkaline media and cleaned-up by solid-phase extraction with
Meriç Batıoğlu-Pazarbaşı et al.
FEMS microbiology ecology, 80(2), 331-341 (2012-05-23)
Centimetre-scale vertical distribution of mineralization potential was determined for 2,4-dichlorophenoxyacetic acid (2,4-D), 4-chloro-2-methylphenoxyacetic acid (MCPA) and 2-(4-chloro-2-methylphenoxy)propanoic acid (MCPP) by 96-well microplate radiorespirometric analysis in aquifer sediment sampled just below the groundwater table. Mineralization of 2,4-D and MCPA was fastest
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