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fenbutatin oxide (Ref: ENT 27738)
** hexakis ** SD 14114 ** BAS 2981 ** 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 fenbutatin oxide

Description: An acaricide used to control a wide range of phytophagous mites and other insects

Example pests controlled: Spidermites, Aphids, Mealybugs, Thrips, Whitefiles, Scale

Example applications: Fruit trees including citrus, apples, apricots; Currants; Vines; Nuts; Ornamentals

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1974, first registered in US

EC Regulation 1107/2009 (repealing 91/414):

Status Not approved
Dossier rapporteur/co-rapporteur Belgium
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 C60H78OSn2
Canonical SMILES CC(C)(C[Sn](CC(C)(C)C1=CC=CC=C1)(CC(C)(C)C2=CC=CC=C2)O[Sn](CC(C)(C)C3=CC=CC=C3)(CC(C)(C)C4=CC=CC=C4)CC(C)(C)C5=CC=CC=C5)C6=CC=CC=C6
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) HOXINJBQVZWYGZ-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/6C10H13.O.2Sn/c6*1-10(2,3)9-7-5-4-6-8-9;;;/h6*4-8H,1H2,2-3H3;;;/rC60H78OSn2/c1-55(2,49-31-19-13-20-32-49)43-62(44-56(3,4)50-33-21-14-22-34-50,45-57(5,6)51-35-23-15-24-36-51)61-63(46-58(7,8)52-37-25-16-26-38-52,47-59(9,10)53-39-27-17-28-40-53)48-60(11,12)54-41-29-18-30-42-54/h13-42H,43-48H2,1-12H3
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 Acaricide, Insecticide
Substance group Organometal
Minimum active substance purity 970 g/kg
Known relevant impurities EU dossier - bishydroxybis(2-methyl-2-phenoxypropyl)tin
oxide, <20g/Kg
Substance origin Synthetic
Mode of action Selective, non-systemic with contact and stomach action, acts by inhibiting oxidative phosphorylation
CAS RN 13356-08-6
EC number 236-407-7
CIPAC number 359
US EPA chemical code 104601
PubChem CID 16683004
Molecular mass (g mol-1) 1052.68
PIN (Preferred Identification Name) hexakis(2-methyl-2-phenylpropyl)distannoxane
IUPAC name bis[tris(2-methyl-2-phenylpropyl)tin] oxide
CAS name hexakis(2-methyl-2-phenylpropyl)distannoxane
Other status information OSPAR soc; Severe Marine Pollutant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 12B
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance Tetranychus turkestani
Tetranychus urticae
Physical state Fine white powder
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
  • BASF
  • DuPont
  • Sepro Corp
  • Shell
Example products using this active
  • Torque 50WP
  • Vendex
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Often supplied as a wettable powder, suspension concentrate or liquid concentrate.


ENVIRONMENTAL FATE

for fenbutatin oxide

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) 0.015 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 3490 A5 - Hexane -
70100 A5 - Toluene -
4920 A5 - Acetone -
310000 A5 - Dichloromethane -
Melting point (oC) 147.8 A5 -
Boiling point (oC) Decomposes before boiling L3 -
Degradation point (oC) 230 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 1.41 X 1005 Calculated -
Log P 5.15 A5 - @ 25 DegC High
Bulk density (g ml-1)/Specific gravity 1.31 A5 -
Dissociation constant (pKa) at 25oC Not applicable A5 -
Note: No dissociation
Vapour pressure at 20oC (mPa) 3.9 X 10-05 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 2.70 X 10-03 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index -2.26 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 5.35 X 10-03 Calculated -
Note Estimated concentrations of chemicals with Koc values greater than 9995 ml g-1 are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated High
Maximum UV-vis absorption L mol-1 cm-1 Neutral solution: 225nm = 3509333, 259nm = 1097, 290nm = <10; [Acidic solution: 225nm = 3773333, 259nm = 1039, 290nm = <10; [Basic solution: 224nm = 3524000, 259nm = 998, 290nm = <10 A5 -
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) 365 H4 Very persistent
DT50 (lab at 20oC) 389 A5 Very persistent
DT50 (field) 95 H4 Moderately persistent
DT90 (lab at 20oC) 1431 A5 -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 243-795 days, DT90 range 1001-2303 days; Other sources: DT50 90 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 55 A5 Stable
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 100 A5 Persistent
Note Not sensitive to pH
Water-sediment DT50 (days) 147 A5 Slow
Water phase only DT50 (days) 1 A4 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 1677 A5 Non-mobile
Kfoc 139404
1/n 0.99
Notes and range EU dossier kf range 1283-2333 mL/g, Kfoc range 44353-298490 mL/g, 1/n range 0.94-1.04, Soils=3
pH sensitivity No

Other known metabolites:

Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
beta,beta--dimethylphenethylstannoic acid polymer SD 33608 Water/sediment; Water (Photolysis); Plant - -
1,3-dihydroxy-1,1,3,3-tetrakis(2-methyl-2-phenylpropyl)distannoxane
(Ref: IN-CG 200)
SD 31723 a = Soil (Photolysis); Rat; Water; Plant a = 0.034 -


ECOTOXICOLOGY

for fenbutatin oxide

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) 730 A5 Threshold for concern
CT50 (days) 7 -
Mammals - Acute oral LD50 (mg kg-1) > 3000 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) > 100 -
Birds - Acute LD50 (mg kg-1) > 969 A5 Anas platyrhynchos Moderate
Birds - Short term dietary (LC50/LD50) > 5620 mg kg feed-1 A5 Anas platyrhynchos -
Fish - Acute 96 hour LC50 (mg l-1) 0.00114 A5 Oncorhynchus mykiss High
Fish - Chronic 21 day NOEC (mg l-1) 0.00127 A5 Oncorhynchus mykiss High
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.048 A5 Daphnia magna High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.016 A5 Daphnia magna Moderate
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) > 1000 A5 Chironomus riparius Low
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) - - -
Non-target plants > 1000 A5 Onion, Oat, OSR, Cucumber, Pea, Tomato
Vegetative vigour, ER50
as g/ha
-
> 1000 A5 Onion, Oat, OSR, Cucumber, Pea, Tomato
Seedling emergence, ER50
as g/ha
-
Algae - Acute 72 hour EC50, growth (mg l-1) > 0.0036 A5 Pseudokirchneriella subcapitata High
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) > 200 A5 Low
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 200 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) > 500 A5 Eisenia andrei, corr Moderate
Earthworms - Chronic NOEC, reproduction (mg kg-1) 1.67 A5 Eisenia andrei, corr Moderate
Other soil macro-organisms Acute LC50 (mg kg-1) - - -
Chronic NOEC (mg kg-1) - - -
Other arthropod (1) LR50 g ha-1 85.9 48 hour
A5 Aphidius rhopalosiphi
-
% Effect - - -
Other arthropod (2) LR50 g ha-1 468.6 7 day
A5 Typhlodromus pyri
-
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 10 mg kg-1 soil, 28 days
-
Mesocosm study data NOEAEC mg l-1 0.1 A5 Aquatic community -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for fenbutatin oxide

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) > 3000 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) 0.046 A5 Rat, 4 hr (whole body) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.05 A5 Rat, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.1 A5 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) None allocated A5 -
Dermal penetration studies (%) 1-20 A5 concentration dependent -
Dangerous Substances Directive 76/464 List I - -
Exposure Routes Public No unacceptable risks to bystanders identified
Occupational -
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) 0.1 EU Dir 89/778/EC limit; A5 -

Health issues:

Carcinogen Genotoxic Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

A3; B3; C3; D0; E0

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

General human health issues Highly toxic
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 oxidising or explosive
IMDG Transport Code is usually 6.1 or 9
CLP classification 2013 Health: H315, H319, H330
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases T+ - Very toxic: R26
Xi - Irritant: R36/38
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S1/2, S28, S36/37, S45, S60, S61
WHO Classification III - Slightly hazardous
UN Number Active 2786
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group III (minor danger)


TRANSLATIONS

for fenbutatin oxide

Language Name
English fenbutatin oxide
French fenbutin oxyde
German Fenbutatinoxid
Danish fenbutatin oxid
Italian fenbutatin ossido
Spanish fenbutatin óxido
Greek -
Slovenian fenbutatenoksid
Polish tlenek fenbutacyny
Swedish -
Hungarian fenbutalin-oxid
Dutch fenbutatinoxide

Record last updated: Tuesday 25 June 2019
Contact: aeru@herts.ac.uk
© University of Hertfordshire