tetradifon (Ref: ENT 23737)
** tedion ** sulfone ** Translations

Environmental Fate - Ecotoxicology - Human Health

GENERAL INFORMATION

Description: An acaricide for use in horticultural crops to control a wide range of phytophagous mites

Introduction: circa 1955

EC Directive 1107/2009 (repealing 91/414):
Status Excluded from Annex 1
Dossier rapporteur/co-rapporteur -
Date inclusion expires Essential use only

Approved for use () or known to be used () in the following European countries:

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also registered in: Australia

General status:
Pesticide type Acaricide
Substance group Bridged diphenyl
Substance origin Synthetic
Mode of action Non-systemic with larvicidal and ovicidal activity. Acts by inhibiting oxidative phosphorylation.
CAS RN 116-29-0
EC number 204-134-2
CIPAC number 113
US EPA chemical code 079202
Chemical formula C12H6Cl4O2S
SMILES Clc1cc(c(Cl)cc1Cl)S(=O)(=O)c2ccc(Cl)cc2
International Chemical Identifier (InChI) InChI=1/C12H6Cl4O2S/c13-7-1-3-8(4-2-7)19(17,18)12-6-10(15)9(14)5-11(12)16/h1-6H
Structure diagram/image available? Yes
Molecular mass (g mol-1) 356.06
IUPAC Name 4-chlorophenyl 2,4,5-trichlorophenyl sulfone
CAS Name 1,2,4-trichloro-5-[(4-chlorophenyl)sulfonyl]benzene
Other status information OSPAR soc
Herbicide Resistance Classification (HRAC) Not applicable
Insecticide Resistance Classification (IRAC) 12C
Fungicide Resistance Classification (FRAC) Not applicable
Physical state Colourless crystals
Related substances & organisms

Formulations:
Property Value
Example manufacturers of products using this active
  • Chemtura
  • King Tech Corp
Example products using this active
  • Acaroil TD
  • Ovifac
  • Propachem Super
  • Tetrapaz
UK LERAP status No UK approval for use or outside scope
Formulation and application details Available in a variety of formulations including emulsifiable concentrates, wettable powders and smoke generators.


ENVIRONMENTAL FATE

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 0.078 L3 Low
Solubility - In organic solvents at 20oC (mg l-1) 82000 C4 - Acetone -
255000 C4 - Chloroform -
10000 C4 - Methanol -
115000 C4 - Xylene -
Melting Point (oC) 146 L3 -
Boiling Point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 4.07 X 1004 Calculated -
Log P 4.61 L3 High
Bulk density (g ml-1)/Specific gravity 1.52 L3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 25oC (mPa) 3.20 X 10-05 C4 Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1) 1.46 X 10-04 L3 Non-volatile
Henry's law constant at 20oC (dimensionless) 6.19 X 10-08 Q2 Non-volatile
GUS leaching potential index 4.10 Calculated High leachability
SCI-GROW groundwater index (µg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value 1.44 X 10+00 Calculated -
Note -
Potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Value Source/Quality Score/Other Information Interpretation
Soil degradation (days) (aerobic) DT50 (typical) 112 C4 Persistent
DT50 (lab at 20oC) 112 C4 Persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note: -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable C2 Very persistent
Note -
Water-Sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Value Source/Quality Score/Other Information Interpretation
Linear Kd - W3 Moderately mobile
Koc 100
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

Property Value Source/Quality Score/Other Information Interpretation
Bio-concentration factor BCF 190 P4 Threshold for concern
CT50 (days) Not available -
Bioaccumulation potential - Calculated Moderate
Mammals - Acute oral LD50 (mg kg-1) > 14700 L3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 200 -
Birds - Acute LD50 (mg kg-1) 5000 L3 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 880 L3 Lepomis macrochirus Low
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 2 L3 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
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) - - -
Algae - Acute 72 hour EC50, growth (mg l-1) 100 L3 Raphidocelis subcapitata Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees - Acute 48 hour LD50 (µg bee-1) 11 C4 Contact Moderate
Earthworms - Acute 14 day LC50 (mg kg-1) 5000 L3 Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50product ha
EC50product ha
NOECproduct ha
% Effect 		- - -
Other arthropod (1) LR50 g ha-1 Harmless Dose: 96 g ha-1
AA3 Typhlodromus pyri 		Harmless
% Effect - - -
Other arthropod (2) LR50 g ha-1 Harmless Dose: 96 g ha-1
AA3 Chrysoperla carnea 		Harmless
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) > 14700 L3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 10000 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 3.0 L3 Rat, 4hr -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational [May be absorbed into the body by inhalation of dust]
Examples of European MRLs (mg kg-1) Value -
Note For the EU pesticides database click here
Drinking Water MAC (µg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Acetyl cholinesterase inhibitor Neurotoxicant Respiratory tract irritant Skin irritant Eye irritant

-

-

General human health issues [Possible liver and kidney toxicant]

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data

Handling issues:
Property Value Source/Quality Score/Other Information Interpretation
General [Prevent generation of dust], [Tackle fires using a water spray or dry chemicals]
EC Risk Classification -
EC Safety Classification -
WHO Classification U - Unlikely to present an acute hazard
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number -
Waste disposal & packaging [Dispose of as chemical waste of low toxicity]


TRANSLATIONS

Language Name
English tetradifon
French tetradifon
German Tetradifon
Danish tetradifon
Italian tetradifon
Spanish tetradifon
Greek -
Slovenian tetradifon
Polish tereadifon
Swedish tetradifon
Hungarian -
Dutch -
Record last updated: Sunday 07 August 2011
Contact: aeru@herts.ac.uk