Isouron
Last updated: 24/01/2023
(Not known by any other names)
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate
Ecotoxicity
Human health
 
An obsolete urea herbicide that was used to control annual broad-leaf and some perennial weeds
Broad-leaved weeds; Grass weeds
Sugarcane; Pineapples; Non-cropped land
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Considered obsolete but may be available in some countries
1975, discovered in Japan
Not approved
Not applicable
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Not applicable
Not applicable
Yes
ATAustria
BEBelgium
BGBulgaria
CYCyprus
CZCzech Republic
DEGermany
DKDenmark
EEEstonia
ELGreece
 
 
 
 
 
 
 
 
 
ESSpain
FIFinland
FRFrance
HRCroatia
HUHungary
IEIreland
ITItaly
LTLithuania
LULuxembourg
 
 
 
 
 
 
 
 
 
LVLatvia
MTMalta
NLNetherlands
PLPoland
PTPortugal
RORomania
SESweden
SISlovenia
SKSlovakia
 
 
 
 
 
 
 
 
 
ISIceland
NONorway
 
 
 
 
 
 
 
 
 
None
C₁₀H₁₇N₃O₂
CC(C)(C)C1=CC(=NO1)NC(=O)N(C)C
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JLLJHQLUZAKJFH-UHFFFAOYSA-N
InChI=1S/C10H17N3O2/c1-10(2,3)7-6-8(12-15-7)11-9(14)13(4)5/h6H,1-5H3,(H,11,12,14)
Yes
Herbicide
Oxazole herbicide; Urea herbicide
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Synthetic
Inhibition of photosynthesis at photosystem II. Selective.
55861-78-4
611-325-8
None allocated
125801
41648
No data found
211.26
N-(5-tert-butyl-1,2-oxazol-3-yl)-N,N-dimethylurea
3-(5-tert-butyl-1,2-oxazol-3-yl)-1,1-dimethylurea
N-[5-(1,1-dimethylethyl)-3-isoxazolyl]-N,N-dimethylurea
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C2
7
Not applicable
Not applicable
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Obsolete - not thought to be commercially available for crop protection applications
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708
High
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119
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9.55 X 1001
Calculated
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1.98
Low
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178
R4 R = Peer reviewed scientific publications 4 = Verified data
Persistent
90
R3 R = Peer reviewed scientific publications 3 = Unverified data of known source
Moderately persistent
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Literature gives DT₅₀ in autoclaved soil of 148-208 days, in non-autoclaved soil DT₅₀ is 58-70 days. Field data DT₅₀ = 90 days in sandy loam
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Soil adsorption and mobility
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Cannot be calculated
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None
Terrestrial ecotoxicology
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HUMAN HEALTH AND PROTECTION
High (class III)
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5000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
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Intraperitoneal LD₅₀ = 456 mg kg⁻¹
Mouse
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EU MRL pesticide database 
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Carcinogen
Endocrine disruptor
No data found
A0 A = Chromosome aberration (EFSA database) 0 = No data
; B0 B = DNA damage/repair (EFSA database) 0 = No data
; C0 C = Gene mutation (EFSA database) 0 = No data
; D0 D = Genome mutation (EFSA database) 0 = No data
; E0 E = Unspecified genotoxicity type (miscellaneous data source) 0 = No data
No data found
Reproduction / development effects
Acetyl cholinesterase inhibitor
Neurotoxicant
✓Yes, known to cause a problem
No data found
No data found
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
No data found
No data found
Eye irritant
Phototoxicant
 
No data found
No data found
 
Moderately toxic of ingested
Will emit toxic oxides of nitrogen if heated
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isouron
isuron
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Record last updated:
24/01/2023
Contact:
aeru@herts.ac.uk
Please cite as:
Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal , 22 (4), 1050-1064. DOI: 10.1080/10807039.2015.1133242