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thiobencarb (Ref: IMC 3950)
** benthiocarb ** bencarb ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for thiobencarb

Description: A pre-emergence and early post-emergence herbicide for weed control in paddy fields and other situations

Example pests controlled: Watergrass; Barnyardgrass; carb grass; False pimpernel; Foxtail; Goosegrass; Millet; Mexican weed; Morning glory; Pigweed; Spike rush; Yellow nutsedge; Junglerice; Cockspur

Example applications: Rice

Efficacy & activity: Rice/Weeds=High

Availability status: Current

Introduction & key dates: 1970, first reported; 1969, first introduced Japan

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Spain
Date inclusion expires Expired/Withdrawn
EU Candidate for substitution (CfS) -
Listed in EU database Yes

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C12H16ClNOS
Canonical SMILES CCN(CC)C(=O)SCC1=CC=C(C=C1)Cl
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) QHTQREMOGMZHJV-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C12H16ClNOS/c1-3-14(4-2)12(15)16-9-10-5-7-11(13)8-6-10/h5-8H,3-4,9H2,1-2H3
2D structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide
Substance group Thiocarbamate
Minimum active substance purity 930 g/kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Selective. ACCase inhibitor - inhibition of lipid synthesis.
CAS RN 28249-77-6
EC number 248-924-5
CIPAC number 388
US EPA chemical code 108401
PubChem CID 34192
Molecular mass (g mol-1) 257.8
PIN (Preferred Identification Name) S-[(4-chlorophenyl)methyl] diethylcarbamothioate
IUPAC name S-4-chlorobenzyl diethyl(thiocarbamate)
CAS name S-[(4-chlorophenyl)methyl] diethylcarbamothioate
Other status information Chemical subject to PIC regulations; Marine pollutant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) N
Herbicide Resistance Classification (WSSA) 8
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Echinochloa crus-galli
Echinochloa oryzicola
Physical state Colourless viscous liquid
Related substances & organisms

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • Kumiai
  • Valent
  • Chevron
Example products using this active
  • Saturn 90EC
  • Bolero
  • Abolish
  • Siacarb
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Often supplied as emulsifiable concentrates or granules.


ENVIRONMENTAL FATE

for thiobencarb

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 16.7 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 500000 A5 - n-Hexane -
500000 A5 - Toluene -
500000 A5 - Methanol -
500000 A5 - Acetone -
Melting point (oC) - - -
Boiling point (oC) 326.6 A5 -
Degradation point (oC) - - -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 1.70 X 1004 Calculated -
Log P 4.23 A5 High
Bulk density (g ml-1)/Specific gravity 1.16 A5 -
Dissociation constant (pKa) at 25oC Not applicable A5 -
Note: No dissociation
Vapour pressure at 20oC (mPa) 2.39 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 3.68 X 10-02 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.59 Calculated Low leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 2.42 X 10-03 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 Neutral solution: 221nm = 19006; [Acidic solution: 220.5nm = 18888; [Basic solution: 222nm = 18888 A5 -
Surface tension (mN m-1) 60.66 A5 at 20oC, 90% solution -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 21 M4 Non-persistent
DT50 (lab at 20oC) 79 A5 Moderately persistent
DT50 (field) 4 A5 Non-persistent
DT90 (lab at 20oC) 466.5 A5 -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 61-297 days, DT90 range 140-987 days; Other sources: DT50 21 days (DW4)
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value Stable A5 -
Note Not a significant degardation route
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note Stable pH 5 to pH 9
Water-sediment DT50 (days) 94.9 A5 Moderately fast
Water phase only DT50 (days) 4.4 A5 Moderately fast

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - - -
Koc -
Notes and range -
Freundlich Kf 30.98 A5 Slightly mobile
Kfoc 1062
1/n 0.76
Notes and range Kf range 7.8-50.55, Kfoc range 1176-2016 mL/g, 1/n range 0.685-0.831, OC range 0.4-3.9%, Soils=4
pH sensitivity No

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
- GC-ECD Plant - -
4-chlorohipuric acid - Rat; Animal (Urinary) - -
4-chlorobenzoic acid - Rat; Animal (Faeces); Soil (Aerobic) - -
4-chlorobenzyl methyl sulfone - Rat; Animal (Tissue); Soil (Aerobic) - -
2-hydroxythiobencarb - Soil (Aerobic) 0.008 -
3-hydroxythiobencarb - Soil (Aerobic) 0.013 -


ECOTOXICOLOGY

for thiobencarb

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) 302 A5 (Whole fish, Other literature Log BCF range -2.0-3.5 (R3)) Threshold for concern
CT50 (days) 0.3 -
Mammals - Acute oral LD50 (mg kg-1) 560 A5 Mouse Moderate
Mammals - Short term dietary NOEL (mg kg-1) > 8 A5 Rat High
(ppm diet) > 125 -
Birds - Acute LD50 (mg kg-1) > 2000 A5 Colinus virginianus Low
Birds - Short term dietary (LC50/LD50) > 5000 mg kg feed-1 A5 Anas platyrhynchos -
Fish - Acute 96 hour LC50 (mg l-1) 0.98 A5 Cyprinidae Moderate
Fish - Chronic 21 day NOEC (mg l-1) > 0.026 A5 Pimephales promelas Moderate
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 1.1 A5 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.072 A5 Daphnia magna Moderate
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.37 F4 Americamysis bahia Moderate
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) 0.45 A5 Chironomus riparius Moderate
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) 0.99 A5 Lemna gibba Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.017 A5 Raphidocelis subcapitata Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees (Apis spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 100 A5 Low
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 100 A5 Low
Unknown mode acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Bumblebees (Bombus spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
-
Mason bees (Osmia spp.) Contact acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) - - -
Other pollinators (1) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Other pollinators (2) Acute LD50 (worst case from 24 , 48 and 72 hour values - μg insect-1) - - -
Mode of exposure -
Earthworms - Acute 14 day LC50 (mg kg-1) 437 A5 Eisenia foetida, corr Moderate
Earthworms - Chronic NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms Acute LC50 (mg kg-1) 60.0 A5 Folsomia candida, 28d -
Chronic NOEC (mg kg-1) - - -
Other arthropod (1) LR50 g ha-1 440 48 hour
A5 Aphidius rhopalosiphi
-
% Effect - - -
Other arthropod (2) LR50 g ha-1 3370 7 day
A5 Typhlodromus pyri
-
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 5 x field rate
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for thiobencarb

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) 560 A5 Mouse Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 5000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 2.43 A5 Rat (nose only) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.01 A2 Rat, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.25 A2 Rat, SF=100 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.25 A2 Rat, 90 day, SF=100 -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Routes Public No unacceptable risks to bystanders identified
Occupational No unacceptable risks to operators or other workers identified
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Genotoxic Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

A0; B0; C0; D0; E0

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

-

General human health issues Moderately toxic
Possible liver and kidney toxicant
Key: Genotoxicity
A: Chromosome aberration (EFSA database)
B: DNA damage/repair (EFSA database)
C: Gene mutation (EFSA database)
D: Genome mutation (EFSA database)
E: Unspecified genotoxicity type (miscellaneous data source)
0: No data
1: Positive
2: Mixed/ambiguous results
3: Negative
Key: Other
: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data found

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes Not explosive
CLP classification 2013 Health: H302
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S60, S61
WHO Classification II - Moderately hazardous
UN Number Usually 3082
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for thiobencarb

Language Name
English thiobencarb
French thiobencarbe
German Thiobencarb
Danish thiobencarb
Italian tiobencarb
Spanish tiobencarb
Greek -
Slovenian tiobenkarb
Polish tiobenkarb
Swedish -
Hungarian tiobenkarb
Dutch thiobencarb

Record last updated: Friday 25 May 2018
Contact: aeru@herts.ac.uk