Propanoic acid,2,2-dichloro-, 2-(2,4,5-trichlorophenoxy)ethyl ester cas no:136-25-4

NamePropanoic acid,2,2-dichloro-, 2-(2,4,5-trichlorophenoxy)ethyl ester
CAS136-25-4
SynonymsPropionicacid, 2,2-dichloro-, 2-(2,4,5-trichlorophenoxy)ethyl ester (6CI,7CI,8CI);2,2-Dichloropropionic acid 2-(2,4,5-trichlorophenoxy)ethyl ester;2-(2,4,5-Trichlorophenoxy)ethyl 2,2-dichloropropionate; Baron; Erbon; Novon;Pentanate
Molecular FormulaC11H9 Cl5 O3
Molecular Weight366.45

refractive index1.555

Hazard Xn,N
Risk 22-51/53
Safety

Moderately toxic by ingestion. Used as a herbicide to control perennial broadleaf weeds. When heated to decomposition it emits toxic fumes of Cl⁻.

Hazard CodesXn,N
Risk Statements 22-51/53
R22: Pentanate (CAS NO.136-25-4) is harmful if swallowed. 
R51/53: Pentanate (CAS NO.136-25-4) is toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 61
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
chicken	LD50	oral	3170mg/kg (3170mg/kg)		Pesticide Chemicals Official Compendium, Association of the American Pesticide Control Officials, Inc., 1966. Vol. -, Pg. 484, 1966.
guinea pig	LD50	unreported	2600mg/kg (2600mg/kg)	PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: REGIDITY	Hygiene and Sanitation Vol. 34(4-6), Pg. 174, 1969.
mammal (species unspecified)	LD50	unreported	700mg/kg (700mg/kg)		"Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 122, 1971.
mouse	LD50	oral	912mg/kg (912mg/kg)		"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 549, 1986.
mouse	LD50	unreported	912mg/kg (912mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: REGIDITY BEHAVIORAL: ATAXIA	Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 34(5), Pg. 18, 1969.
rabbit	LD50	unreported	2193mg/kg (2193mg/kg)	PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: REGIDITY	Hygiene and Sanitation Vol. 34(4-6), Pg. 174, 1969.
rat	LD50	oral	1gm/kg (1000mg/kg)		Farm Chemicals Handbook. Vol. -, Pg. C126, 1991.
rat	LD50	unreported	1900mg/kg (1900mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA BEHAVIORAL: REGIDITY	Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 34(5), Pg. 18, 1969.