Chlorflurenol
Last updated: 18/01/2023
(Also known as: chlorflurecol; IT 3456)
Chlorflurenol is an obsolete herbicide. Data on environmental fate is scant but it does have a low aqueous solubility. It has a low mammalian oral toxicity but it does not appear to have been extensively evaluated for chronic health impacts. It is moderately toxic to fish and aquatic invertebrates.
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 and morphactin plant growth retardant and weed suppressant
Growth
Pineapples; Strawberries; Turf; Non-agricultural situations including roadsides, pavements, railways
-
Considered obsolete but may be available in some countries
circa 1965
Not approved
Expired
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Expired
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
 
 
 
 
 
 
 
 
 
Substance is racemic.
C₁₄H₉ClO₃
C1=CC=C2C(=C1)C3=C(C2(C(=O)O)O)C=C(C=C3)Cl
-
SVOAUHHKPGKPQK-UHFFFAOYSA-N
InChI=1S/C14H9ClO3/c15-8-5-6-10-9-3-1-2-4-11(9)14(18,13(16)17)12(10)7-8/h1-7,18H,(H,16,17)
Yes
Herbicide, Plant Growth Regulator
Morphactin PGR
-
-
Synthetic
Absorbed by leaves and roots, Auxin inhibitor. Chlorflurenol blocks or slows down the growth and development of growing tips and buds of herbaceous plants.
2464-37-1
219-565-1
506
292200
17169
No data found
260.68
rac-(9R)-2-chloro-9-hydroxy-9H-fluorene-9-carboxylic acid
(RS)-2-chloro-9-hydroxyfluorene-9-carboxylic acid
2-chloro-9-hydroxy-9H-fluorene-9-carboxylic acid
-
-
P
19
Not applicable
Not applicable
-
White crystalline solid
21.8
Low
-
-
-
152
-
-
-
-
-
-
-
-
-
-
7.59 X 1002
Calculated
-
2.88
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Soil adsorption and mobility
-
-
-
Cannot be calculated
-
-
-
-
-
-
-
-
-
Low risk
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Based on LogP < 3
Low risk
-
-
None
Terrestrial ecotoxicology
> 12800
Rat
Low
-
-
-
-
-
-
-
-
> 10000
Phasianidae
Low
-
-
-
-
-
-
> 1350
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
as methyl variant
Low
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.16
Oncorhynchus mykiss
Moderate
-
-
-
5.1
Daphnia magna
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
> 12800
Rat
Low
10000
Rat
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EU MRL pesticide database 
-
-
-
-
-
-
-
-
-
-
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
No data found
XNo, known not to cause a problem
XNo, known not to cause a problem
Respiratory tract irritant
Skin irritant
Skin sensitiser
No data found
?Possibly, status not identified
No data found
Eye irritant
Phototoxicant
 
?Possibly, status not identified
No data found
 
No further information available
No information available
Not classified: Obsolete
O (Obsolete substance)
-
-
chlorflurenol
chlorflurenol
Chlorflurenol
chlorflurenol
clorflurenol
clorflurenol
-
chloroflurenol
-
-
-
Record last updated:
18/01/2023
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