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Substance Name: MCPB [BSI:ISO]
RN: 94-81-5
UNII: OA1Z4N1842
InChIKey: LLWADFLAOKUBDR-UHFFFAOYSA-N

Classification Codes

  • Agricultural Chemical
  • Herbicide
  • Mutation Data

Molecular Formula

  • C11-H13-Cl-O3

Molecular Weight

  • 228.6737
 
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Names and Synonyms

Results Name

  • MCPB [BSI:ISO]

Name of Substance

  • 2-Methyl-4-chlorophenoxy gamma-butyric acid
  • MCPB
  • MCPB [BSI:ISO]

Synonyms

  • (4-Chloro-o-tolyloxy)butyric acid
  • 2,4-MCPB
  • 2-Methyl-4-chlorophenoxybutyric acid
  • 2M 4KhM
  • 4-((4-Chloro-o-tolyl)oxy)butyric acid
  • 4-(2-Methyl-4-chlorophenoxy)butyric acid
  • 4-(2-Methyl-4-chlorphenoxy)-buttersaeure
  • 4-(2-Methyl-4-chlorphenoxy)-buttersaeure [German]
  • 4-(4-Chlor-2-methylphenoxy)-buttersaeure
  • 4-(4-Chlor-2-methylphenoxy)-buttersaeure [German]
  • 4-(4-Chloro-2-methylphenoxy)butanoic acid
  • 4-(4-Chloro-2-methylphenoxy)butyric acid
  • 4-06-00-01996 (Beilstein Handbook Reference)
  • 4MCPB
  • Bexone
  • BRN 2215202
  • Caswell No. 558
  • CCRIS 1463
  • EINECS 202-365-3
  • EPA Pesticide Chemical Code 019201
  • gamma-(4-Chloro-2-methylphenoxy)butyric acid
  • gamma-MCPB
  • HSDB 1737
  • Kyselina 4-(4-chlor-2-methylfenoxy)maselna
  • Kyselina 4-(4-chlor-2-methylfenoxy)maselna [Czech]
  • Legumex
  • MCP-butyric
  • MCPB
  • NSC 102796
  • PDQ
  • Thitrol
  • Trifolex
  • Trotox
  • U46 MCPB
  • UNII-OA1Z4N1842

Systematic Names

  • 4-(4-Chloro-2-methylphenoxy)butanoic acid
  • Butanoic acid, 4-(4-chloro-2-methylphenoxy)-
  • Butanoic acid, 4-(4-chloro-2-methylphenoxy)- (9CI)
  • Butyric acid, 4-((4-chloro-o-tolyl)oxy)-
  • MCPB

Superlist Name

  • 4-(2-Methyl-4-chlorophenoxy)butyric acid

Registry Numbers

CAS Registry Number

  • 94-81-5

FDA UNII

  • OA1Z4N1842

Related Registry Number

  • 6062-26-6 (hydrochloride salt)

System Generated Number

  • 0000094815

Structure Descriptors

InChI

1S/C11H13ClO3/c1-8-7-9(12)4-5-10(8)15-6-2-3-11(13)14/h4-5,7H,2-3,6H2,1H3,(H,13,14)

InChIKey

LLWADFLAOKUBDR-UHFFFAOYSA-N

Smiles

c1(c(cc(Cl)cc1)C)OCCCC(O)=O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 800mg/kg (800mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C303, 1991.
rat LD50 oral 680mg/kg (680mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 100 deg C   EXP
pKa Dissociation Constant 6.2 (none) 25 EXP
Water Solubility 48 mg/L 25 EXP
Vapor Pressure 4.33E-07 mm Hg 20 EXP
Henry's Law Constant 2.71E-09 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 2.02E-11 cm3/molecule-sec 25 EST

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