Name: DIMEFURON
SKU: 34205-21-5

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Basic Information

Molecular Structure:
CAS No.:	34205-21-5
Name:	DIMEFURON

Formula:	C15H19 Cl N4 O3
Molecular Weight:	338.794
Synonyms:	Urea,3-[4-(2-tert-butyl-5-oxo-D2-1,3,4-oxadiazolin-4-yl)-3-chlorophenyl]-1,1-dimethyl- (8CI);3-[2-Chloro-4-(3,3-dimethylureido)phenyl]-5-tert-butyl-1,3,4-oxadiazolinone;Dimefuron; Pradone TS; RP 23465; Vt 2809
Density:	1.3g/cm3
Melting Point:	193℃
Flash Point:	2oC
Hazard Symbols:
Risk Codes:	11-20/21/22-36-22
Safety:	Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NO_x and Cl⁻.
PSA:	80.37000
LogP:	2.94290

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Chemistry

IUPAC Name: 3-[4-(5-tert-butyl-2-oxo-1,3,4-oxadiazol-3-yl)-3-chlorophenyl]-1,1-dimethylurea
Synonyms of Urea,N'-(3-chloro-4-(5-(1,1-dimethylethyl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)phenyl)-N,N-dimethyl- (CAS NO.34205-21-5): 3-(4-(5-tert-Butyl-2,3-dihydro-2-oxo-1,3,4-oxadiazol-3-yl)-3-chlorophenyl)-1,1-dimethylurea ; N'-(3-Chloro-4-(5-(1,1-dimethylethl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)phenyl)-N,N-dimethylurea (9CI) ; Pradone kombi ; Pradone plus ; Urea, 3-(4-(2-tert-butyl-5-oxo-delta(sup 2)-1,3,4-oxadiazolin-4-yl)-3-chlorophenyl)-1,1-dimethyl-
Product Categories: Alpha sort;D;DAlphabetic;DID - DINPesticides&Metabolites;Herbicides;Pesticides&Metabolites;Urea structure
CAS NO: 34205-21-5
Molecular Formula: C₁₅H₁₉ClN₄O₃
Molecular Weight : 338.7894
Molecular Structure:
EINECS: 251-879-4
H bond acceptors: 7
H bond donors: 1
Freely Rotating Bonds: 3
Polar Surface Area: 65.45 Å²
Index of Refraction: 1.592
Molar Refractivity: 87.89 cm³
Molar Volume: 259.4 cm³
Surface Tension: 44 dyne/cm
Density: 1.3 g/cm³
Storage temp: APPROX 4°C

Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Source
dog	LD50	oral	2gm/kg (2000mg/kg)	Pesticide Manual. Vol. 9, Pg. 288, 1991.
mouse	LD50	oral	10gm/kg (10000mg/kg)	Farm Chemicals Handbook. Vol. -, Pg. C108, 1991.
rat	LD50	oral	1gm/kg (1000mg/kg)	Farm Chemicals Handbook. Vol. -, Pg. C108, 1991

Safety Profile

Hazard Codes: F, Harmful Xn
Risk Statements: 11-20/21/22-36-22
R11: Highly flammable.
R22: Urea,N'-(3-chloro-4-(5-(1,1-dimethylethyl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)phenyl)-N,N-dimethyl- (CAS NO.34205-21-5) is harmful if swallowed.
R21/22: Harmful in contact with skin and if swallowed.
R36: Irritating to eyes.
Safety Statements: 16-26-36
S16: Keep away from sources of ignition.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
RIDADR: UN 1648 3/PG 2
RTECS: YS4000000
Moderately toxic by ingestion. When Urea,N'-(3-chloro-4-(5-(1,1-dimethylethyl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)phenyl)-N,N-dimethyl- (CAS NO.34205-21-5) is heated to decomposition, it emits toxic vapors of NO_x and Cl⁻.