Bis(tributyltin) oxide
CAS 56-35-9
EC 200-268-0
Formula C24H54OSn2
MW 596.1 g/mol
Organometallic Compounds Textile, Leather & PaperBuilding & ConstructionPulp & Paper Preservation & Biocide
Description
Bis(tributyltin) oxide, commonly known as TBTO, is an organotin biocide registered under CAS 56-35-9 and EC 200-268-0. It is also marketed under trade names including Butinox, CAR-BAN, and HBD. No E-code designation applies to this substance.
TBTO functions as a broad-spectrum biocide by disrupting cellular respiration in fungi, bacteria, and marine organisms. In textile and leather processing, it is applied as a preservative to inhibit microbial degradation during storage and transit. In pulp, paper, and construction materials, it controls fungal growth and slime-forming bacteria in wet processing environments.
This compound is subject to REACH regulation and carries significant restrictions under EU legislation, including prohibitions in antifouling applications and consumer products. Procurement teams should verify current authorisation status and end-use compliance before sourcing. It is available as a neat liquid, supplied in closed-loop packaging formats in accordance with applicable handling requirements.
TBTO functions as a broad-spectrum biocide by disrupting cellular respiration in fungi, bacteria, and marine organisms. In textile and leather processing, it is applied as a preservative to inhibit microbial degradation during storage and transit. In pulp, paper, and construction materials, it controls fungal growth and slime-forming bacteria in wet processing environments.
This compound is subject to REACH regulation and carries significant restrictions under EU legislation, including prohibitions in antifouling applications and consumer products. Procurement teams should verify current authorisation status and end-use compliance before sourcing. It is available as a neat liquid, supplied in closed-loop packaging formats in accordance with applicable handling requirements.
Physical Properties
| Melting Point | -45 °C |
| Boiling Point | 180 °C @ Press: 2 Torr |
| Density | 1.17 g/cm³ @ Temp: 25 °C |
| Flash Point | >230 °F |
| Appearance | Clear colorless liquid |
| Color | colorless |
| Form | liquid |
| Water Solubility | INSOLUBLE |
| Vapor Pressure | <0.01 mm Hg ( 25 °C) |
| Refractive Index | n 20/D 1.486(lit.) |
| Log P | 3.840 (est) |
Safety & Handling (Learn More)
Danger GHS06 GHS07 GHS08 GHS09
H
H301H311H312H315H319H330H331H335H372H373H400H410
P
P203P260P261P262P264P270P271P273P280P284P316P317P318P319P320P321P330P391P405P501P264+P265P301+P316P302+P352P304+P340P332+P317P337+P317P361+P364P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29310095 |
| UN Number | 2788 |
| ADR Class | 6.1 |
| Packing Group | II |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Other Names
Tributyltin oxidetributyl(tributylstannyloxy)stannanehexabutyldistannoxaneHBDTBTOTBTO(R)Butinox
Related Products
Raw Materials
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