MCPB Chemical Properties

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)

Water Solubility 

44mg/L(room temperature)

BRN 

2215202

EPA Substance Registry System

MCPB (94-81-5)

Safety Information

Hazard Codes 

N

Risk Statements 

50/53

Safety Statements 

60-61

RIDADR 

UN3077 9/PG 3

WGK Germany 

2

RTECS 

ES8575000

HS Code 

29189900

Hazardous Substances Data

94-81-5(Hazardous Substances Data)

Toxicity

LD50 oral in rat: 680mg/kg

MCPB Usage And Synthesis

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.

Uses

MCPB is used for research regarding herbicides to control weed in crop field.

Uses

Herbicide.

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

MCPB(94-81-5)Related Product Information

• Methyldopa
• MCPB
• MCPB-ETHYL ESTER
• MCPB METHYL ESTER
• MCPB-METHYL ESTER D3 (RING)
• MCPB D6 (RING D3, METHYL D3)
• MCPB sodium,MCPB sodium salt
• METHYL (2S,4S)-4-(2-BENZYL-4-CHLOROPHENOXY)-2-PYRROLIDINECARBOXYLATE
• MCPB SOLUTION 100UG/ML IN MTBE 1ML
• MCPB SOLUTION 100UG/ML IN ACETONITRILE 1ML
• MCPB METHYL ESTER SOLUTION 100UG/ML IN MTBE 1ML
• MCPB-ETHYL ESTER
• McpB protein
• MCPB METHYL ESTER SOLUTION 100UG/ML IN ACETONITRILE 1ML
• (2S,4S)-1-(TERT-BUTOXYCARBONYL)-4-(4-CHLORO-2-CYCLOHEXYLPHENOXY)-2-PYRROLIDINECARBOXYLIC ACID
• (2S,4S)-4-(2-BENZYL-4-CHLOROPHENOXY)-1-(TERT-BUTOXYCARBONYL)-2-PYRROLIDINECARBOXYLIC ACID
• METHYL (2S,4S)-4-(4-CHLORO-2-CYCLOHEXYLPHENOXY)-2-PYRROLIDINECARBOXYLATE
• 4-(4-chloro-2,6-dimethylphenoxy)butanoic acid