| Identification | More | [Name]
FENURON | [CAS]
101-42-8 | [Synonyms]
1,1-DIMETHYL-3-PHENYLUREA
CROPTEX CHROME
DYBAR(R)
DYHARD(R) UR 300
Fenidin
FENURON
KAYRON
PDU
PDU(R)
1,1-dimethyl-3-phenyl-ure
1,2-dimethyl-3-phenylurea
1-Phenyl-3,3-dimethylurea
3-Phenyl-1,1-dimethylurea
croptexruby
Dibar
electrum
Falisilvan
Fenulon
herbonyellow
n,n-dimethyl-n’-phenyl-ure | [EINECS(EC#)]
202-941-4 | [Molecular Formula]
C9H12N2O | [MDL Number]
MFCD00025662 | [Molecular Weight]
164.2 | [MOL File]
101-42-8.mol |
| Chemical Properties | Back Directory | [Appearance]
White, crystalline solid.
Almost insoluble in water (0.3% at 25C), sparingly
soluble in hydrocarbon solvents, stable toward oxidation and moisture. | [Melting point ]
131-133° | [Boiling point ]
291.67°C (rough estimate) | [density ]
1.1062 (rough estimate) | [vapor pressure ]
0.002Pa at 60℃ | [refractive index ]
1.5373 (estimate) | [Fp ]
2 °C | [storage temp. ]
APPROX 4°C
| [solubility ]
Chloroform (Slightly), Methanol (Slightly) | [form ]
neat | [pka]
15.09±0.70(Predicted) | [color ]
White | [biological source]
human | [Water Solubility ]
2.40g/L(25 ºC) | [Merck ]
13,4037 | [BRN ]
2208535 | [Specific Activity]
194-290nmol/min·mg | [Henry's Law Constant]
4.9×103 mol/(m3Pa) at 25℃, Duchowicz et al. (2020) | [LogP]
0.98 | [CAS DataBase Reference]
101-42-8(CAS DataBase Reference) | [EPA Substance Registry System]
Fenuron (101-42-8) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,Xn,F | [Risk Statements ]
R36/37:Irritating to eyes and respiratory system .
R36:Irritating to the eyes.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable. | [Safety Statements ]
S24:Avoid contact with skin .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
UN 1648 3/PG 2 | [WGK Germany ]
2 | [RTECS ]
YT1450000 | [TSCA ]
TSCA listed | [REACH Registrations]
Active | [HS Code ]
29242990 | [Hazardous Substances Data]
101-42-8(Hazardous Substances Data) | [Toxicity]
LD50 orally in rats: 7500 mg/kg (Bailey, White) |
| Hazard Information | Back Directory | [Description]
Fenuron is an obsolete phenylurea pre-emergence herbicide. It has a high aqueous solubility and is moderately volatile. Evidence suggests it is moderately persistent in soil systems. Based on its physico-chemical properties it has a high potential to leach to groundwater. Ecotoxicological data is very limited but acute oral ecotoxicity tends to be moderate to low. It has a low mammalian oral toxicity. | [Chemical Properties]
White, crystalline solid.
Almost insoluble in water (0.3% at 25C), sparingly
soluble in hydrocarbon solvents, stable toward oxidation and moisture. | [Uses]
Fenuron is an phenylurea based herbicide used to control brush on chaparral watersheds. | [Definition]
electrum: 1. An alloy of gold andsilver containing 55–88% of gold.2. A German silver alloy containing52% copper, 26% nickel, and 22%zinc. | [Production Methods]
Fenuron is commercially produced through a straightforward condensation reaction. The process involves reacting 1,1-dimethylurea (also known as N,N-dimethylurea) with phenyl isocyanate under controlled conditions. This reaction typically takes place in an organic solvent such as acetone or toluene, with temperature regulation to ensure optimal yield and minimize byproducts. The resulting product, fenuron, is then purified through crystallisation or solvent extraction to achieve the desired technical grade. | [Health Hazard]
Acute and chronic toxicity of low order;moderately toxic by intraperitoneal route; inthe body, it may hydrolyze to aniline, whichmay cause methemoglobinemia; the oralmedian lethal dose in experimental animalsranged between 3000 and 8000 mg/kg.
LD50 oral (rat): 6400 mg/kg
LD50 oral (rabbit): 4700 mg/kg
LD50 oral (guinea pig): 3200 mg/kg. | [Mechanism of action]
Photosynthetic electron transport inhibitor at the photosystem II. | [Pesticide Type]
Herbicide |
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