Description

MCPA-sodium (CAS No. 3653-48-3) is a highly effective sodium salt formulation of the systemic phenoxy herbicide MCPA (2-methyl-4-chlorophenoxyacetic acid). With the molecular formula C₉H₈ClNaO₃, this compound is widely recognized for its selective herbicidal activity against broadleaf weeds in cereal crops and turf management. The sodium salt form enhances water solubility, facilitating easy application as foliar sprays or soil treatments. This technical-grade product is synthesized under strict quality control measures to ensure high purity (>95%) and consistent performance. MCPA-sodium is available as a white to off-white crystalline powder, packaged in moisture-resistant containers to maintain stability. Suitable for research, agricultural studies, and formulation development, this product is ideal for scientists investigating herbicide mechanisms, weed resistance, or environmental impact.

Properties

• CAS Number: 3653-48-3
• Complexity: 189
• IUPAC Name: sodium;2-(4-chloro-2-methyl-phenoxy)acetate
• InChI: InChI=1S/C9H9ClO3.Na/c1-6-4-7(10)2-3-8(6)13-5-9(11)12;/h2-4H,5H2,1H3,(H,11,12);/q;+1/p-1
• InChI Key: STAPBGVGYWCRTF-UHFFFAOYSA-M
• Exact Mass: 222.0059661
• Molecular Formula: C9H8ClNaO3
• Molecular Weight: 222.60
• SMILES: CC1=C(C=CC(=C1)Cl)OCC(=O)[O-].[Na+]
• Topological: 49.4
• Monoisotopic Mass: 222.0059661
• Physical Description: Methoxone sodium salt is a colorless plates. Corrosive. Used as an herbicide.
• Synonyms: MCPA-sodium, MCPA sodium salt, 3653-48-3, MCPA sodium, Methoxone sodium salt, Sodium MCPA, Chwastoks, Dikoteks, Estermine, Metaxone, Methoxon, Phenoxylene, 2M-4KH sodium salt, MCP sodium salt, Agroxone 3, Methoxone 30, Chwastox 80, Dicotex 80, Dikotex 30, Hedonal M80, Chwastox plynny 30, Hedonal M 80, DIKOTEX P, MCPA-sodium [ISO], Caswell No. 557K, SYS 67ME, Sodium 2-methyl-4-chlorophenoxyacetate, 4-Chloro-2-methylphenoxyacetic acid sodium salt, Sodium (2-methyl-4-chlorophenoxy)acetate, Sodium (4-chloro-2-methylphenoxy)acetate, 4E2KB6UGRM, U 46M, EINECS 222-895-9, (p-Chloro-o-tolyloxy)acetic acid sodium salt, Acetic acid, (4-chloro-2-methylphenoxy)-, sodium salt, EPA Pesticide Chemical Code 030502, DTXSID2034700, NA MCPA, AGROXONE-3, (4-Chloro-2-methylphenoxy) acetate sodium salt, DIKOTEX-30, (2-Methyl-4-chlorophenoxy)acetic acid, sodium salt, Acetic acid, ((4-chloro-o-tolyl)oxy)-, sodium salt, MCPA SODIUM SALT [MI], DTXCID0014700, Acetic acid, 2-(4-chloro-2-methylphenoxy)-, sodium salt (1:1), (4-CHLORO-2-METHYLPHENOXY)ACETATE SODIUM, 2-METHYL-4-CHLOROPHENOXYACETIC ACID SODIUM SALT, 222-895-9, sodium;2-(4-chloro-2-methylphenoxy)acetate, MCPA sodium 100 microg/mL in Acetonitrile:Methanol, UNII-4E2KB6UGRM, 2-(4-chloro-2-methylphenoxy)acetic acid, sodium salt, 4-Chloro-2-methylphenoxyacetate sodium salt, SCHEMBL5475058, CHEMBL2135017, MSK22051, Tox21_302386, SBB060925, AKOS003052577, AKOS022190758, NCGC00164000-01, NCGC00255502-01, CAS-3653-48-3, DB-247080, NS00100175, ST50411989, (4-Chloro-2-methylphenoxy)acetic acid sodium salt, Q27259471

Application

MCPA-sodium is primarily used as a selective herbicide for post-emergence control of annual and perennial broadleaf weeds in wheat, barley, oats, and grasslands. It functions as a synthetic auxin, disrupting normal plant growth patterns and leading to uncontrolled cell division and vascular tissue destruction. Researchers utilize this compound to study herbicide metabolism in plants, environmental degradation pathways, and resistance mechanisms in weed populations. Formulation scientists employ MCPA-sodium in developing improved agricultural products with enhanced efficacy and reduced environmental impact.

Safety and Hazards

GHS Hazard Statements

• H302+H312+H332 (16.8%): Harmful if swallowed, in contact with skin or if inhaled [Warning Acute toxicity, oral; acute toxicity, dermal; acute toxicity, inhalation]
• H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
• H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation]
• H400 (100%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
• H410 (100%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P261, P264, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, P391, and P501

Hazard Classes and Categories

• Acute Tox. 4 (100%)
• Acute Tox. 4 (100%)
• Acute Tox. 4 (100%)
• Aquatic Acute 1 (100%)
• Aquatic Chronic 1 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.