Chlorthiamid (Ref: WL 5792.)
Last updated: 14/01/2023
(Also known as: chloriamide; DCBN)
Chlorthiamid is an obsolete pre-emergence herbicide once used for non-selective weed control. It is highly soluble in water and is non-volatile. It is not persistent in soil systems and considered to be moderately mobile, and so it may leach to groundwater under certain conditions. Its toxicity to flora and fauma tends to be low to moderate. It also has a low mammalian toxicity. Little information is available on chlorthiamids potential for serious adverse health effects.
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 pre-emergence herbicide once used for non-selective weed control
Quackgrass; Barnyard grass; Crab grass; Horsetail; Pigweed; Chickweed; Plaintain; Nightshade; Dandelion; Lambsquarters
Orchards; Grapes; Berry crops; Forestry; Non-cropped areas including roadsides, pathways, industrial sites
-
Considered obsolete but may be available in some countries
1964, first reported
Not approved
Expired
No UK approval for use
EC Regulation 1107/2009 (repealing 91/414)
Not approved
Not applicable
Expired
-
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
C₇H₅Cl₂NS
C1=CC(=C(C(=C1)Cl)C(=S)N)Cl
No data
KGKGSIUWJCAFPX-UHFFFAOYSA-N
InChI=1S/C7H5Cl2NS/c8-4-2-1-3-5(9)6(4)7(10)11/h1-3H,(H2,10,11)
Yes
Herbicide
Benzonitrile herbicide; Thioamide herbicide
-
-
Synthetic
Systemic, absorbed by roots and leaves, acting against germinating seeds. Inhibits cell wall synthesis
1918-13-4
217-637-7
72
326300
2734819
616-005-00-1
206.09
2,6-dichlorobenzenecarbothioamide
2,6-dichlorothiobenzamide
2,6-dichlorobenzenecarbothioamide
-
-
L
29
Not applicable
Not applicable
-
Off-white solid
Hodogaya Chemical Co. Shell Research Ltd
Usually supplied as a granular or wettable powder formulations.
950
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
High
-
-
-
151
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
-
-
-
-
-
-
-
-
-
5.89 X 1001
Calculated
-
1.77
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Low
-
-
-
-
-
-
1.47
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
-
-
-
-
-
0.13
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Low volatility
2.82 X 10-05
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-volatile
-
-
-
-
-
-
-
25
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Non-persistent
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Best available data
-
-
-
-
-
-
-
-
-
-
-
-
Stable
W4 W = French database provided by ARVALIS-Institut du Végétal. Dataset no longer available. 4 = Verified data
Stable
-
-
-
-
-
-
-
Soil adsorption and mobility
-
Q2 Q = Miscellaneous data from online sources 2 = Unverified data of unknown source
Moderately mobile
241
Estimated
-
-
-
-
-
-
-
2.26
Calculated
Transition state
9.69 X 10-02
Calculated
-
-
Low
Calculated
-
Moderately mobile
Calculated
-
Low risk
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source
Based on LogP < 3
Low risk
-
-
Known groundwater metabolites
None
None
Terrestrial ecotoxicology
> 2000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
-
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
-
100
-
-
-
-
500
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Gallus domesticus
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
77.3
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
41
L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source
Rasbora heteromorpha
Moderate
-
-
-
56.0
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Daphnia magna
Moderate
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
17.0
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Unknown species
Low
-
-
-
-
-
-
-
-
-
HUMAN HEALTH AND PROTECTION
High (class III)
-
-
> 2000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Rat
Low
1000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
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
No data found
Respiratory tract irritant
Skin irritant
Skin sensitiser
?Possibly, status not identified
No data found
No data found
Eye irritant
Phototoxicant
 
No data found
No data found
 
Harmful if swallowed
Prevent generation of dust Gives off irritating fumes in a fire
Health: H302
III (Slightly hazardous)
-
-
chlorthiamid
chlorthiamide
Chlorthiamid
chlorthiamid
cloritiamid
clortiamid
chlorthiamid
chlortiamid
-
-
chloorthiamide
-
Record last updated:
14/01/2023
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