Chloroxynil
Last updated: 22/01/2023
(Not known by any other names)
Chloroxynil is an obsolete herbicide that was used to control broad-leaved weeds. It has not bveen extensively studied and so very little data is available.
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 herbicide that was used for the control of annual broad-leaved weeds.
Pigweed; Mayweed; Knotweed; Shepherd's purse; Goosefoot; Stinkweed
Cereals including wheat, barley, oats; Lucerne; Sorghum; Fax
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Considered obsolete but may be available in some countries
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Not approved
Not applicable
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Not applicable
Not applicable
No
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
C₇H₃Cl₂NO
C1=C(C=C(C(=C1Cl)O)Cl)C#N
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YRSSHOVRSMQULE-UHFFFAOYSA-N
InChI=1S/C7H3Cl2NO/c8-5-1-4(3-10)2-6(9)7(5)11/h1-2,11H
Yes
Cambridge Crystallographic Data Centre diagrams
Common Name
Relationship
Link
chloroxynil
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Herbicide
Nitrile herbicide
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Synthetic
Selective, contact action with some systenic activity. Inhibits photosynthesis
1891-95-8
217-572-4
None allocated
309500
74685
No data found
188.01
3,5-dichloro-4-hydroxybenzonitrile
3,5-dichloro-4-hydroxybenzonitrile
3,5-dichloro-4-hydroxybenzonitrile
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C3
6
Not applicable
Not applicable
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Off-white coloured crystalline solid
Rhone-Poulenc Agrochemie May & Baker Ltd
Obsolete - not thought to be commercially available for crop protection applications
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143
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
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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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EU MRL pesticide database 
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Carcinogen
Endocrine disruptor
XNo, known not to cause a problem
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
No data found
XNo, known not to cause a problem
XNo, known not to cause a problem
Respiratory tract irritant
Skin irritant
Skin sensitiser
✓Yes, known to cause a problem
✓Yes, known to cause a problem
No data found
Eye irritant
Phototoxicant
 
✓Yes, known to cause a problem
No data found
 
Toxic if inhaled, ingested and in contact with skin
IMDG Transport Code is usually 6.1
Health: H331, H302, H312, H315, H319, H335
Not classified: Obsolete
3439
Packaging Group III (minor danger)
chloroxynil
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Record last updated:
22/01/2023
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