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terbufos (Ref: AC 92100)
** sebuphos ** terbuphos ** 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 terbufos

Description: An insecticide and nematicide used to control soil and other pests

Example pests controlled: Wireworms; Maggots; Rootworm larvae; White grubs; Black maize beetles; Nematodes; Aphids

Example applications: Corn; Sugarbeet; Sorghum; Sunflower; Citrus; Potatoes; Peanuts

Efficacy & activity: -

Availability status: Current

Introduction & key dates: First registered in US in 1974

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Expired
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

Also used in: Australia, USA

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C9H21O2PS3
Canonical SMILES CCOP(=S)(OCC)SCSC(C)(C)C
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) XLNZEKHULJKQBA-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H21O2PS3/c1-6-10-12(13,11-7-2)15-8-14-9(3,4)5/h6-8H2,1-5H3
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 Insecticide, Nematicide
Substance group Organophosphate
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Systemic. Cholinesterase inhibitor.
CAS RN 13071-79-9
EC number 235-963-8
CIPAC number 459
US EPA chemical code 105001
PubChem CID 25670
Molecular mass (g mol-1) 288.4
PIN (Preferred Identification Name) S-[(tert-butylsulfanyl)methyl] O,O-diethyl phosphorodithioate
IUPAC name S-tert-butylthiomethyl O,O-diethyl phosphorodithioate
CAS name S-[[(1,1-dimethylethyl)thio]methyl] O,O-diethyl phosphorodithioate
Other status information Severe Marine Pollutant; Chemical subject to PIC regulations; Found infrequently in drinkwater supplies
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 1B
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Diabrotica undecimpunctata
Schizaphis graminum
Physical state Pale yellow 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
  • Amvac
  • BASF
  • American Cyanamid
Example products using this active
  • Counter
  • Contraven
  • Aragran
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually formulated as granules.


ENVIRONMENTAL FATE
for terbufos

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) 4.5 K4 Low
Solubility - In organic solvents at 20oC (mg l-1) 300000 L2 - Acetone -
Melting point (oC) -29.2 L3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) 88 L3 - (open cup) -
Octanol-water partition coefficient at pH 7, 20oC P 3.24 X 1004 Calculated -
Log P 4.51 G4 High
Bulk density (g ml-1)/Specific gravity 1.11 L3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 34.6 G4 Highly volatile
Henry's law constant at 25oC (Pa m3 mol-1) 2.70 H4 Moderately volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.81 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 3.73 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 Low
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

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) 8 K4 Non-persistent
DT50 (lab at 20oC) 5 H4 Non-persistent
DT50 (field) 12 H4 Non-persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Best available data
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 4.5 K4 Moderately fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 6.5 K4 Non-persistent
Note Not sensitive to pH
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

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 - G3 Slightly mobile
Koc 500
Notes and range -
Freundlich Kf 24.4 R3 Slightly mobile
Kfoc 700
1/n 1.09
Notes and range Soil characteristics - New Zealand Tokomaru soil with OC 3.2%
pH sensitivity -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
terbufos sulfoxide - Soil; Plant; Animal - -
terbufos sulfone - Soil; Plant; Animal - -
terbufos oxon sulfoxide - a = Soil; b= Plant; c = Animal a=0.05 -
terbufos oxon sulfone - Plant - -
terbufos oxon - Animal - -
O,O-diethyl phosphorothioate - Rats (Urinary) - -
diethyl phosphate - Rats (Urinary) - -
O,O-diethyl phosphorodithioate - Rats (Urinary) - -


ECOTOXICOLOGY
for terbufos

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) 286 F4 Threshold for concern
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 1.3 G4 Rat High
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 1 -
Birds - Acute LD50 (mg kg-1) 185 L3 Anas platyrhynchos Moderate
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.004 L3 Lepomis macrochirus High
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.00031 K3 Daphnia magna High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.00022 F3 Americamysis bahia High
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 1.4 K3 Unknown species Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) 4.1 F4 Moderate
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) 4 Q3 High
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION
for terbufos

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) 1.3 G4 Rat High
Mammals - Dermal LD50 (mg kg-1 body weight) 1.0 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 0.0061 L3 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.0006 JMPR 2003 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.002 JMPR 2003 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List I; List II - -
Exposure Limits - - -
Exposure Routes Public -
Occupational -
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

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

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

-

General human health issues Highly toxic

: 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 No information available
CLP classification 2013 Health: H300, H310
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases T+ - Very toxic: R27/28
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S1/2, S36/37, S45, S60, S61
WHO Classification Ia - Extremely hazardous
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number 3018
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS
for terbufos

Language Name
English terbufos
French terbuphos
German Terbufos
Danish terbufos
Italian terbufos
Spanish terbufos
Greek terbufos
Slovenian terbufos
Polish terbufos
Swedish -
Hungarian -
Dutch terbufos

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