Tributyltin oxide

56-35-9

BIS(TRIBUTYLTIN) OXIDE

TBTO

Hexabutyldistannoxane

Distannoxane, hexabutyl-

Bis(tri-n-butyltin) oxide

Bis(tributyltin)oxide

Biomet

Butinox

Lastanox Q

Mykolastanox F

Biomet 66

Stannicide A

Bis(tri-n-butyltin)oxide

Lastanox F

Lastanox T

Biomet TBTO

BioMeT SRM

Bis(tributylstannyl)oxide

Lastanox T 20

Tin, oxybis(tributyl-

Vikol AF-25

Vikol LO-25

Oxybis(tributylstannane)

Hexabutyl distannoxane

Oxyde de tributyletain

C-Sn-9

Bis(tributyloxide) of tin

Bis-(tri-n-butylcin)oxid

Oxybis(tributyltin)

Hexabutyldistannioxan

Bis(tri-N-butylzinn)-oxyd

Bis(tributylstannium) oxide

OTBE

Tin, bis(tributyl)-, oxide

Kyslicnik tri-N-butylcinicity

ENT 24,979

Stannane, tri-N-butyl-, oxide

L.S. 3394

NSC 22332

Oxybis[tributyltin]

tributyl(tributylstannyloxy)stannane

6-Oxa-5,7-distannaundecane, 5,5,7,7-tetrabutyl-

Bis(tri-n-butyltin)oxide, technical grade

Stannane, oxide

DTXSID9020166

3353Q84MKM

MFCD00009418

NSC-22332

Bis(tributyltin oxide)

oxybis(tributyl tin)

Oxybis[tributylstannane]

Distannoxane, 1,1,1,3,3,3-hexabutyl-

bis(tributyl tin)oxide

OTBE [French]

Caswell No. 101

6-Oxa-5, 5,5,7,7-tetrabutyl-

Bis(tributyltin) Oxide (Technical Grade)

HBD

Hexabutyldistannioxan [Czech]

CCRIS 3697

WLN: 4-SN-4&4&O-SN-4&4&4

HSDB 6505

Bis-(tri-n-butylcin)oxid [Czech]

Bis(tri-n-butylzinn)-oxyd [German]

EINECS 200-268-0

Tributyltin oxide (TBTO)

Kyslicnik tri-n-butylcinicity [Czech]

EPA Pesticide Chemical Code 083001

ZK 21995

tributyltinoxide

UNII-3353Q84MKM

AI3-24979

tributyltin hydrate

Tributyl tin oxide

hexabutyidistannoxane

TBOT

Tributyltin(IV) oxide

(nBu3Sn)2O

Tributyltin(IV) oxide;

(Bu3Sn)2O

bis(tributyl stannyl)oxide

EC 200-268-0

bis (tri-n-butyltin) oxide

bis(tri-n-butylstannyl)oxide

SCHEMBL19183

Keycide X-10 (Salt/Mix)

bis(tri-n-butylstannyl) oxide

DTXCID10166

Bis[tri-n-butyltin(IV)]oxide

Bis(tributyltin) oxide, 96%

TBTO (Bis(tributyltin) oxide)

TRIBUTYLTIN OXIDE [HSDB]

APQHKWPGGHMYKJ-UHFFFAOYSA-

CHEBI:81543

NSC22332

NSC28132

Tox21_203001

NSC-28132

tributyl[(tributylstannyl)oxy]stannane

AKOS015909709

CAS-56-35-9

1,1,1,3,3,3-Hexabutyldistannoxane #

NCGC00163942-01

NCGC00163942-02

NCGC00260546-01

BP-20397

TBTO, PESTANAL(R), analytical standard

NS00041358

C18149

EN300-219085

A831016

Q384794

The Henry's Law constant for bis(tributyltin) oxide is estimated as 1.3X10-7 atm-cu m/mole(SRC) derived from its estimated vapor pressure, 6.4X10-7 mm Hg(1), and water solubility, 4 mg/l(1). This Henry's Law constant indicates that bis(tributyltin) oxide is expected to be essentially nonvolatile from water surfaces(2). No volatilization of bis(tributyltin) oxide was observed after 62 days from a 2 mg/l aqueous solution of the compound(1). In a 278-day marine mesocosm experiment, loss of tributyltin from the water interface to the atmosphere occurred at a rate of 0.075/day(3). Volatilization loss of tributyltin from the water column will not be rapid; it was found that loss was preceded by rapid transport to the surface microlayer followed by volatilization, or photodegradation and volatilization(3). Volatilization from dry near-surface soil and other surfaces is not likely to be an important(SRC) based upon its low estimated vapor pressure(1).

No leaching of tributyltin was observed in several soils (clay, sand, topsoil and silt) during periods as long as 16 weeks(1). Tributyltin binds strongly to sediment with the distribution constant for Toronto Harbor sediment and water as 2180 at 20 °C(2). Very little tributyltin or inorganic tin was released from unshaken sediment in 10 months(2). However, other studies have shown that tributyltin does not adsorb appreciably to suspended particulate matter and that it is primarily associated with the dissolved fraction of estuarine water(3,4). This is in line with the observation that addition of humic acids or kaolin clay material does not significantly affect the measured bis(tributyltin) BCF in mussels(5), suggesting that bis(tributyltin) species are only weakly bound to these materials(SRC). Studies on the adsorption of tributyltin to a wide variety of sorbents yield sorption coefficients ranging from 110 to 350,000 l/kg, but the majority of sorption coefficients are about 1,000 l/kg(6). Adsorption is relatively fast (hours) and reversible(6). In a 278-day marine mesocosm experiment, the transport rate from the water column to sediment was 0.045/day(7). The distribution coefficient between dissolved state and particulate matter calculated from data between days 2-19 was 60,000 (standard deviation 30,000)(7). Other investigators obtained distribution constants for adsorption of tributyltin to particulate matter and sediment of 3400-9300 l/kg and 200-55,000 l/kg, respectively; values were a function of sediment type and location(7). The Freundlich parameters, log k and 1/n, for tributyl tin to sediment was 1.07 and 0.359, respectively(8). In soil microcosm experiments, small bis(tributyltin) oxide releases from wood treated with the compound was observed to migrate >10 cm from the wood with 86% of the compound residing within 5 cm of the wood; none of the compound was found in any layer below 10 cm nor in groundwater at the bottom of the microcosm chamber(8). These data suggest that bis(tributyltin) oxide can strongly bind to soil and sediment but that adsorption to suspended particulate and humic matter may be much weaker(SRC).