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Organometallic Compounds

Dibutyltin bis(acetylacetonate)

CAS: 22673-19-4

Overview

Dibutyltin bis(acetylacetonate) (CAS 22673-19-4 ) is an organotin compound used as a catalyst in polymerization and curing reactions across plastics, coatings, and sealant manufacturing.

Its chelated structure provides controlled reactivity, making it suitable for applications where precise cure rate management is a formulation requirement for industrial chemical processes.

In silicone and polyurethane sealant systems, it functions as a condensation cure catalyst, enabling controlled crosslink density in construction and industrial adhesive formulations.

Coating manufacturers use it to accelerate curing in moisture-cure and two-component systems where pot life and through-cure balance are critical for high-performance finishes.

In PVC and polymer stabilization processes, it acts as a processing aid catalyst, supporting thermal stability during compounding and ensuring the integrity of the final plastic product.

Rubber compounders also employ it in elastomer crosslinking where a tin-based catalyst offers selectivity advantages over conventional sulfur or peroxide cure systems in specialized manufacturing.

Dibutyltin bis(acetylacetonate) is supplied as a liquid or viscous solution, typically at concentrations suited for direct addition to formulations during the mixing stage.

Technical grade is the standard commercial offering for industrial catalyst applications. Packaging ranges from small drums to bulk quantities depending on production-scale requirements.

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Physical Properties

Melting Point26 °C(lit.)
Boiling Point150 °C(lit.)
Density1.22 g/mL at 25 °C(lit.)
Flash Point130 °F
Colorpale yellow to amber
Formliquid
Vapor Pressure0.038Pa at 25℃
Refractive Indexn 20/D 1.5110(lit.)

Trade & Regulatory

UN Number3178
ADR Class4.1
Packing GroupII
Storage Class4.1B - Flammable solid hazardous materials
WGK (Germany)2

Other Names

dibutyltin bis(24-pentanedionate) | Tindibutylbis(24-pentanedionato-κO2κO4)-(OC-6-11)- | Tindibutylbis(24-pentanedionato)- | Tindibutylbis(24-pentanedionato-OO′)-(OC-6-11)- | Tinbis(24-pentanedionato)dibutyl- | (OC-6-11)-Dibutylbis(24-pentanedionato-κO2κO4)tin

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Chemical Properties

CAS Number
22673-19-4
EC Number
245-152-0
Mol. Weight
431.16

Industries

Documentation