| Identification | Back Directory | [Name]
MCPB | [CAS]
94-81-5 | [Synonyms]
MCPB
CMPB
4MCPB
Bexane
Bexone
2m4khm
2M-4XM
Trotox
Tritrol
u46mcpb
MB 3046
Thitrol
CANTROL
2M 4KhM
4-(MCB)
2m-4kh-m
Trifolex
Thistrol
MCPBacid
2,4-MCPB
Tropotox
U46 MCPB
NSC 102796
gamma-MCPB
TROPOTOX(R)
THISTROL(R)
MCP-Butyric
'LGC' (1308)
butryicacid.
4-butyric Acid
Belmac straight
MCPB PESTANAL
MCPB, 100MG, NEAT
Fisons 18-15, MCPB
3-Phenoxybutyric acid
MCPB 100mg [94-81-5]
mcpb (bsi,iso,wssa,jmaf)
mcpb(presentasisomerspecific)
(4-chloro-o-tolyloxy)butyricacid
[(4-Chloro-o-tolyl)oxy]butyric acid
2-methyl-4-chlorophenoxybutyricacid
4-chloro-2-methylphenoxybutyricacid
4-((4-chloro-o-tolyl)oxy)-butyricaci
4-(4-Chloro-2-methylphenoxy)butanoate
4-((4-Chloro-o-tolyl)oxy)butyric acid
(2-Methyl-4-Chlorophenoxy)butyric acid
(4-Chloro-2-methylphenoxy)butyric acid
4-(4-chloro-2-methylphenoxy)-butanoicaci
4-(4-chlor-2-methylphenoxy)-buttersaeure
4-(2-Methyl-4-chlorphenoxy)-buttersaeure
Butyric acid, 4-[(4-chloro-o-tolyl)oxy]-
4-(4-CHLORO-2-METHYLPHENOXY)BUTYRIC ACID
2-(4-CHLORO-2-METHYLPHENOXY)-BUTYRICACID
kyselina4-(4-chlor-2-methylfenoxy)maselna
4-(2-METHYL-4-CHLOROPHENOXY)-BUTYRIC ACID
4-(4-CHLORO-2-METHYLPHENOXY)BUTANOIC ACID
gamma-2-methyl-4-chlorophenoxybutyricacid
4-(4-Chlor-2-methyl-phenoxy)-buttersaeure
2-methyl-4-chlorophenoxygamma-butyricacid
Kyselina 4-(4-chlor-2-methylfenoxy)maselna
acide(4-chloro2-methyl4-phenoxy)butanoique
gamma-(4-chloro-2-methylphenoxy)butyricacid
gamma-(2-Methyl-4-chlorophenoxy)butyric acid
gamma-(4-Chloro-2-methylphenoxy)butyric acid
Butanoic acid, 4-(4-chloro-2-methylphenoxy)-
4-(4-CHLORO-2-METHYLPHENOXY)BUTYRIC ACID 99%
MCPB (ISO) 4-(4-chloro-o-tolyloxy) butyric acid
4-(4-chlor-2-methylphenoxy)-buttersaeure[german]
4-(4-Chloro-2-methylphenoxy)butyric acid, 4-(4-Chloro-o-tolyloxy)butyric acid | [EINECS(EC#)]
202-365-3 | [Molecular Formula]
C11H13ClO3 | [MDL Number]
MFCD00002820 | [MOL File]
94-81-5.mol | [Molecular Weight]
228.67 |
| Chemical Properties | Back Directory | [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 | [form ]
neat | [pka]
4.58±0.10(Predicted) | [Water Solubility ]
44mg/L(room temperature) | [BRN ]
2215202 | [Henry's Law Constant]
3.6×103 mol/(m3Pa) at 25℃, Duchowicz et al. (2020) | [Major Application]
agriculture
environmental | [InChI]
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]
C(O)(=O)CCCOC1=CC=C(Cl)C=C1C | [Uses]
Herbicide. | [EPA Substance Registry System]
MCPB (94-81-5) |
| Hazard Information | Back Directory | [Definition]
ChEBI: A monocarboxylic acid that is butyric acid substituted by a 2-methyl-4-chlorophenoxy group at position 4. | [Hazard]
Toxic by ingestion. | [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. | [Production Methods]
The industrial production of MCPB begins with the chlorination of o-cresol (2-methylphenol) to introduce a chlorine atom at the 4-position, forming 4-chloro-2-methylphenol. This intermediate is then reacted with 1,4-dibromobutane or similar butanoic acid precursors in an etherification step to form the phenoxybutanoic acid structure. The reaction typically involves base catalysis and controlled heating to ensure selective substitution and minimize side reactions. The resulting crude MCPB is purified through solvent extraction and crystallisation to achieve the desired chemical purity. | [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 | [Mechanism of action]
Selective, systemic, absorbed by leaves and roots with translocation. Synthetic auxin. | [Pesticide Type]
Herbicide |
| Safety Data | Back Directory | [Hazard Codes ]
N | [Risk Statements ]
50/53 | [Safety Statements ]
60-61 | [RIDADR ]
UN3077 9/PG 3 | [WGK Germany ]
2 | [RTECS ]
ES8575000 | [HS Code ]
29189900 | [Storage Class]
11 - Combustible Solids | [Hazard Classifications]
Acute Tox. 4 Oral
Aquatic Acute 1
Aquatic Chronic 1 | [Hazardous Substances Data]
94-81-5(Hazardous Substances Data) | [Toxicity]
LD50 oral in rat: 680mg/kg |
|
| Company Name: |
Sigma-Aldrich
|
| Tel: |
021-61415566 800-8193336 |
| Website: |
https://www.sigmaaldrich.cn |
| Company Name: |
Henan Alfachem Co.,Ltd.
|
| Tel: |
0371-55051623 18137891487 |
| Website: |
www.chemicalbook.com/supplier/14555231/ |
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