metolachlor [ANSI, WSSA]

Modify Date: 2024-01-02 11:07:12

metolachlor [ANSI, WSSA] Structure
metolachlor [ANSI, WSSA] structure
Common Name metolachlor [ANSI, WSSA]
CAS Number 51218-45-2 Molecular Weight 283.794
Density 1.1±0.1 g/cm3 Boiling Point 406.8±45.0 °C at 760 mmHg
Molecular Formula C15H22ClNO2 Melting Point -62.1 °C
MSDS Chinese USA Flash Point 199.8±28.7 °C
Symbol GHS07
GHS07
Signal Word Warning

 Use of metolachlor [ANSI, WSSA]


Metolachlor is a pre-emergent selective, chloroacetanilide herbicide for the control of a variety of annual grass and broad leaf weeds in corn and other crops. Metolachlor is a chiral herbicide consisting of four stereoisomers[1][2].

 Names

Name metolachlor
Synonym More Synonyms

 metolachlor [ANSI, WSSA] Biological Activity

Description Metolachlor is a pre-emergent selective, chloroacetanilide herbicide for the control of a variety of annual grass and broad leaf weeds in corn and other crops. Metolachlor is a chiral herbicide consisting of four stereoisomers[1][2].
Related Catalog
References

[1]. Jingqian Xie, et al. Metolachlor Stereoisomers: Enantioseparation, Identification and Chiral Stability. J Chromatogr A. 2016 Sep 9;1463:42-8.

[2]. D M Stamper, et al. Biodegradation of the Acetanilide Herbicides Alachlor, Metolachlor, and Propachlor. Crit Rev Microbiol. 1998;24(1):1-22.

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 406.8±45.0 °C at 760 mmHg
Melting Point -62.1 °C
Molecular Formula C15H22ClNO2
Molecular Weight 283.794
Flash Point 199.8±28.7 °C
Exact Mass 283.133911
PSA 29.54000
LogP 3.00
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.533

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
AN3430000
CHEMICAL NAME :
o-Acetotoluidide, 2-chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)-
CAS REGISTRY NUMBER :
51218-45-2
LAST UPDATED :
199701
DATA ITEMS CITED :
23
MOLECULAR FORMULA :
C15-H22-Cl-N-O2
MOLECULAR WEIGHT :
283.83
WISWESSER LINE NOTATION :
2R C1 BNV1GY1&1O1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Open irritation test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>1750 mg/m3/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
3170 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
620 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>9 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
3170 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1150 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
410 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2400 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
>10 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Bird - duck
DOSE/DURATION :
>2510 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
5460 mg/kg/13W-C
TOXIC EFFECTS :
Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
131 gm/kg/2Y-C
TOXIC EFFECTS :
Liver - other changes Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
263 gm/kg/2Y-C
TOXIC EFFECTS :
Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
4550 mg/kg/26W-C
TOXIC EFFECTS :
Behavioral - food intake (animal) Nutritional and Gross Metabolic - weight loss or decreased weight gain Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
10 gm/kg
SEX/DURATION :
female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

MUTATION DATA

TYPE OF TEST :
Cytogenetic analysis
TEST SYSTEM :
Human Lymphocyte
DOSE/DURATION :
100 ug/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 281,295,1992 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H317
Precautionary Statements P280
Personal Protective Equipment Eyeshields;Faceshields;Gloves
Hazard Codes Xi:Irritant
Risk Phrases R43
Safety Phrases S36/37
RIDADR UN1648 3/PG 2
RTECS AN3430000
HS Code 2924299017

 Synthetic Route

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metolachlor [ANSI, WSSA] Structure

metolachlor [AN...

CAS#:51218-45-2

Literature: Ciba-Geigy Corporation Patent: US4317916 A1, 1982 ;

~%

metolachlor [ANSI, WSSA] Structure

metolachlor [AN...

CAS#:51218-45-2

Literature: Ciba-Geigy Patent: CH581607 , 1976 ; Chem.Abstr., 1977 , vol. 86, # 72242

 Customs

HS Code 2924299017
Summary 2924299017 2-chloro-n-(2-ethyl-6-methylphenyl)-n-(1-methoxypropan-2-yl)acetamide。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0%

 Articles33

More Articles
Embryotoxic and genotoxic effects of heavy metals and pesticides on early life stages of Pacific oyster (Crassostrea gigas).

Mar. Pollut. Bull. 64(12) , 2663-70, (2012)

This study evaluated embryotoxicity and genotoxicity of two dissolved metals copper and cadmium (Cu and Cd) and two pesticides (metolachlor and irgarol) occurring in Arcachon Bay (SW France) in Pacifi...

Polar organic chemical integrative samplers for pesticides monitoring: impacts of field exposure conditions.

Sci. Total Environ. 488-489 , 188-96, (2014)

This study focuses on how Polar Organic Chemical Integrative Samplers (POCIS) work in real environmental conditions. A selection of 23 polar pesticides and 8 metabolites were investigated by exposure ...

Biodegradation of the acetanilide herbicides alachlor, metolachlor, and propachlor.

Crit. Rev. Microbiol 24(1) , 1-22, (1998)

Alachlor, metolachlor, and propachlor are detoxified in biological systems by the formation of glutathione-acetanilide conjugates. This conjugation is mediated by glutathione-S-transferase, which is p...

 Synonyms

2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide
Cotoran multi
2-Chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)acet-o-toluidide
2R C1 BNV1GY1&1O1
2-chloro-N-(6-ethyl-o-tolyl)-N-[(1RS)-2-methoxy-1-methylethyl]acetamide
Primagram
2-chloro-6’-ethyl-N-[(1RS)-2-methoxy-1-methylethyl]acet-o-toluidide
Metolachlor
Bicep
Primextra
EINECS 257-060-8
Acetamide, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)-
2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxypropan-2-yl)acetamide
2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(-2-methoxy-1-methylethyl)acetamide
rac-2-chloro-N-(2-ethyl-6-methylphenyl)-N-[(2R)-1-methoxypropan-2-yl]acetamide
MFCD00055293
α-Chloro-2'-ethyl-6'-methyl-N-(1-methyl-2-methoxyethyl)acetanilide
2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxy-2-propanyl)acetamide
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