Skip Navigation
ChemIDplus A TOXNET DATABASE LiteBrowseAdvanced

Substance Name: MCPA-sodium [ISO]
RN: 3653-48-3
UNII: 4E2KB6UGRM
InChIKey: STAPBGVGYWCRTF-UHFFFAOYSA-M

Note

  • A powerful herbicide used as a selective weed killer.

Molecular Formulas

  • C9-H8-Cl-O3.Na
  • C9-H9-Cl-O3.Na

Molecular Weight

  • 222.6022
 

Classification Codes

  • Agricultural Chemical
  • Herbicide
  • Mutation Data
  • Reproductive Effect
* denotes mobile formatted website

Links to Resources


Search for this InChIKey on the Web

Names and Synonyms

Results Name

  • MCPA-sodium [ISO]

Name of Substance

  • MCPA sodium salt

Synonyms

  • (2-Methyl-4-chlorophenoxy)acetic acid, sodium salt
  • (p-Chloro-o-tolyloxy)acetic acid sodium salt
  • 2M-4KH sodium salt
  • 4-Chloro-2-methylphenoxyacetic acid sodium salt
  • Agroxone 3
  • Caswell No. 557K
  • Chwastoks
  • Chwastox
  • Chwastox 80
  • Chwastox plynny 30
  • Dicotex
  • Dicotex 80
  • Dikoteks
  • Dikotex
  • Dikotex 30
  • Dikotex P
  • EINECS 222-895-9
  • EPA Pesticide Chemical Code 030502
  • Estermine
  • Hedonal M 80
  • Hedonal M80
  • MCP sodium salt
  • MCPA sodium salt
  • MCPA-sodium
  • Metaxone
  • Methoxon
  • Methoxone 30
  • Methoxone sodium salt
  • Phenoxylene
  • Sodium (2-methyl-4-chlorophenoxy)acetate
  • Sodium (4-chloro-2-methylphenoxy)acetate
  • Sodium MCPA
  • SYS 67ME
  • U 46M
  • UNII-4E2KB6UGRM

Systematic Names

  • Acetic acid, ((4-chloro-o-tolyl)oxy)-, sodium salt
  • Acetic acid, (4-chloro-2-methylphenoxy)-, sodium salt
  • Acetic acid, 2-(4-chloro-2-methylphenoxy)-, sodium salt (1:1)
  • MCPA sodium

Superlist Names

  • (4-Chloro-2-methylphenoxy) acetate sodium salt
  • 4-Chloro-2-methylphenoxyacetate sodium salt
  • Methoxone sodium salt
  • Sodium 2-methyl-4-chlorophenoxyacetate

Registry Numbers

CAS Registry Number

  • 3653-48-3

FDA UNII

  • 4E2KB6UGRM

Other Registry Numbers

  • 11100-01-9
  • 11114-06-0

System Generated Number

  • 0003653483

Molecular Formulas

Molecular Formulas

  • C9-H8-Cl-O3.Na
  • C9-H9-Cl-O3.Na

Molecular Formula Fragments

  • C9-H8-Cl-O3
  • C9-H9-Cl-O3
  • COMPONENT
  • Na

Structure Descriptors

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

InChIKey

STAPBGVGYWCRTF-UHFFFAOYSA-M

Smiles

Cc1cc(ccc1OCC(=O)[O-])Cl.[Na+]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 700mg/kg (700mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 31(2), Pg. 31, 1987.
mouse LD50 intraperitoneal 500mg/kg (500mg/kg)   Food and Cosmetics Toxicology. Vol. 3, Pg. 883, 1965.
mouse LD50 oral 450mg/kg (450mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 31(2), Pg. 31, 1987.
rabbit LD skin > 256mg/kg (256mg/kg)   Toxicology. Vol. 3, Pg. 349, 1975.
rat LCLo inhalation 520mg/m3/4H (520mg/m3) BEHAVIORAL: MUSCLE WEAKNESS

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 31(2), Pg. 31, 1987.
rat LD skin > 2gm/kg (2000mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 31(2), Pg. 31, 1987.
rat LD50 intraperitoneal 400mg/kg (400mg/kg)   Food and Cosmetics Toxicology. Vol. 3, Pg. 883, 1965.
rat LD50 oral 800mg/kg (800mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 subcutaneous 500mg/kg (500mg/kg) BLOOD: HEMORRHAGE

BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Bulletin of Environmental Contamination and Toxicology. Vol. 18, Pg. 152, 1977.
rat LD50 unreported 700mg/kg (700mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 34(2), Pg. 109, 1969.

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) -1.290 (none)   EST
Water Solubility 2.70E+05 mg/L   EXP
Vapor Pressure 7.25E-11 mm Hg 25 EST
Henry's Law Constant 1.38E-08 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 9.60E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.