Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester

Modify Date: 2025-08-28 13:33:23

Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester Structure
Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester structure
 Common Name Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester
CAS Number 51337-71-4 Molecular Weight 348.82100
Density 1.165g/cm3 Boiling Point 431.7ºC at 760mmHg
Molecular Formula C19H21ClO4 Melting Point N/A
MSDS N/A Flash Point 150.1ºC

 Names

Name clofop-isobutyl
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.165g/cm3
Boiling Point 431.7ºC at 760mmHg
Molecular Formula C19H21ClO4
Molecular Weight 348.82100
Flash Point 150.1ºC
Exact Mass 348.11300
PSA 44.76000
LogP 5.09880
Index of Refraction 1.539

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UE9520000
CHEMICAL NAME :
Propionic acid, 2-(4-(4'-chlorophenoxy)phenoxy)-, isobutyl ester
CAS REGISTRY NUMBER :
51337-71-4
LAST UPDATED :
199612
DATA ITEMS CITED :
3
MOLECULAR FORMULA :
C19-H21-Cl-O4
MOLECULAR WEIGHT :
348.85
WISWESSER LINE NOTATION :
GR DOR DOY1&VO1Y1&1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
723 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FMCHA2 Farm Chemicals Handbook. (Meister Pub., 37841 Euclid Ave., Willoughy, OH 44094) Volume(issue)/page/year: -,C16,1991
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>8 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JFAN "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc. of Chemistry, 1983-86 Volume(issue)/page/year: A096,1983
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
8 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JFAN "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc. of Chemistry, 1983-86 Volume(issue)/page/year: A096,1983

 Safety Information

Hazard Codes Xn
Risk Phrases 22
HS Code 2918990090

 Synthetic Route

D-(+)-2-[4-(4-chlorophenoxy)-phenoxy]propionic acid ethyl ester structure

D-(+)-2-[4-(4-c...

CAS#:51337-67-8

~%

Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester Structure

Propanoic acid,...

CAS#:51337-71-4

Literature: Hoechst Aktiengesellschaft Patent: US4531969 A1, 1985 ;
isobutyl 2-chloropropionate structure

isobutyl 2-chlo...

CAS#:62108-67-2

4-(4-Chlorophenoxy)phenol structure

4-(4-Chlorophen...

CAS#:21567-18-0

~%

Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester Structure

Propanoic acid,...

CAS#:51337-71-4

Literature: Hoechst Patent: DE2646124 , 1978 ; Chem.Abstr., 1978 , vol. 89, # 101869
2-methylpropyl 2-bromopropanoate structure

2-methylpropyl ...

CAS#:69122-46-9

4-(4-Chlorophenoxy)phenol structure

4-(4-Chlorophen...

CAS#:21567-18-0

~%

Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester Structure

Propanoic acid,...

CAS#:51337-71-4

Literature: Hoechst Patent: CH621921DE2223894 , 19811973 ; Chem.Abstr., 1974 , vol. 80, # 70543

 Customs

HS Code 2918990090
Summary 2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

 Synonyms

isobutyl (RS)-2-[4-(4-chlorophenoxy)phenoxy]propionate
rac-2-methylpropyl (2R)-2-[4-(4-chlorophenoxy)phenoxy]propanoate
Alopex
Clofop-isobutyl
2-methylpropyl 2-[4-(4-chlorophenoxy)phenoxy]propanoate
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Chemsrc provides CAS#:51337-71-4 MSDS, density, melting point, boiling point, structure, etc. Its name is Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester>> amp version: Propanoic acid,2-[4-(4-chlorophenoxy)phenoxy]-, 2-methylpropyl ester

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