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tributyltin oxide (Ref: ENT 24979)
** TBT ** bis(tributylstannyl)oxide ** bis(tributyltin)oxide ** 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 tributyltin oxide

Description: Used mainly as an antifouling agent for use in marine applications or industrial sites

Example pests controlled: Barnacles; Bacteria; Tubeworms; Mussels; Algae

Example applications: Paints; Industrial water systems; Packaging surfaces

Efficacy & activity: -

Availability status: Obsolete

Introduction & key dates: -

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable
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 C24H54OSn2
Canonical SMILES CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) APQHKWPGGHMYKJ-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/6C4H9.O.2Sn/c6*1-3-4-2;;;/h6*1,3-4H2,2H3;;;
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Fungicide, Molluscicide, Biocide, Other substance
Other constituent type Antifouling agent, Wood preservative
Substance group Organometal
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Broad spectrum, non-systemic, phytotoxic; A metabolic inhibitor with contact and stomach action.
CAS RN 56-35-9
EC number 200-268-0
CIPAC number -
US EPA chemical code 083001
PubChem CID 16682746
Molecular mass (g mol-1) 596.15
PIN (Preferred Identification Name) hexabutyldistannoxane
IUPAC name bis(tributyltin) oxide
CAS name hexabutyldistannoxane
Other status information WFD priority substance; Marine pollutant; Chemical subject to PIC regulations; PAN listed Highly Hazardous Chemical
Relevant Environmental Water Quality Standards EU Directive 2008/105/EC EQS surface waters: annual average 0.0002 ug/L; max measured 0.0015 ug/L
UK statutory standard for the protection of surface water quality: annual average 0.0002 ug/L; max measured 0.0015 ug/L
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not known
Examples of recorded resistance -
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 -
Example products using this active -
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details -


ENVIRONMENTAL FATE
for tributyltin 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) 100 F4 - @ 25 DegC Moderate
Solubility - In organic solvents at 20oC (mg l-1) Miscible F4 - Acetone -
Miscible F4 - Methanol -
Miscible F4 - Ethyl acetate -
Melting point (oC) 53 Q3 -
Boiling point (oC) 180 F4 -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 1.55 X 1003 Calculated -
Log P 3.19 F3 High
Bulk density (g ml-1)/Specific gravity 1.17 F3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 0.000001 F4 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) - - -
GUS leaching potential index Click here for a note on the limitations of the GUS index - - -
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 - - -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - - -
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) - - -
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note: -
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 - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
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 - - -
Koc -
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY
for tributyltin 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) 7000 F4 (Wide range of values reported between 4.5 and 7000) High potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 55 F4 Mouse High
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) - - -
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.0076 F4 Lepomis macrochirus High
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) - - -
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.0014 F4 Daphnia magna High
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) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 0.000016 F4 Scenedesmus quadricauda High
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) 1.0 Q2 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) 2.5 F4 Eisenia andrei 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 tributyltin 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) 55 F4 Mouse High
Mammals - Dermal LD50 (mg kg-1 body weight) > 11700 F4 Rat -
Mammals - Inhalation LC50 (mg l-1) - - -
Other Mammal toxicity endpoints Intravenous LD50 = 6.0 mg kg-1 F4 Mouse -
Intraperitoneal LD50 = 7.2 mg kg-1 F4 Rat -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) [TLV (as tin): 0.1 mg/m3 A4, STEL 0.2 mg/m3 A4 (skin) (ACGIH)] - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational PPE/PPC required - absorbed through the skin
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
Absorbed through the skin
Inhalation may interfere with breathing and cause headache, weakness, tremors and incoordination

: 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 Mild oxidising agent
Not explosive
Combustible
IMDG Transport Code is usually 6.1
May emit toxic fumes when heated
CLP classification 2013 Health: H301, H372, H312, H315, H319
Environment: H400, H410
EC Risk Classification Click here to view information omn the EU risk phrases T - Toxic: R48/23/25
Xn - Harmful: R21
Xi - Irritant: R36/38
N - Dangerous for the environment: R50/53
EC Safety Classification Click here to view information omn the EU safety phrases -
WHO Classification Ib - Highly hazardous
US EPA Classification (formulation) - -
UN Number 3020
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group II (medium danger)


TRANSLATIONS
for tributyltin oxide

Language Name
English tributyltin oxide
French -
German Bis(tri-n-butylzinn)-oxyd
Danish -
Italian -
Spanish -
Greek -
Slovenian -
Polish -
Swedish -
Hungarian -
Dutch -

Record last updated: Friday 01 June 2018
Contact: aeru@herts.ac.uk