Bismuth neodecanoate

Chemical Properties

viscous light yellow liquid

Characteristics

• Bismuth dodecanoate is an environmentally friendly alternative to lead- and tin-containing catalysts. It exhibits better hydrolytic stability than organotin compounds and lowers the selectivity of reactions with water.
• It promotes the NCO/OH reaction, suppresses NCO side reactions, and reduces the formation of CO₂ bubbles. 
• The combination of bismuth and zinc produces a synergistic effect, thereby lowering costs.

Uses

PU catalysts

Application

Bismuth neodecanoate can be used as a catalyst to synthesize:
Thermoplastic polyurethanes by reacting polycaprolactone diols, diisocyanates, and diols with anthracene group.
Polysiloxanes from hydroxy-terminatedpoly(dimethylsiloxanes) and ethyl silicate.

Preparation

Synthesis of Bismuth Neodecanoate
In total, 16.31 g (0.03500 mol) of bismuth oxide and 36.17 g (0.2100 mol) of neodecanoic acid were added to a three-necked flask immersed in an oil bath with continuous stirring. The mixture was heated to 120 °C. Then, 10.70 g (0.1050 mol) of acetic anhydride was added portion-wise into the reactor. The resulting mixture was stirred vigorously at 130 °C for 2 h. After the reaction, the generated acetic acid was evaporated, and the product bismuth neodecanoate was obtained with a yield of 98.23%.

Flammability and Explosibility

Not classified

reaction suitability

core: bismuth
reagent type: catalyst

References

[1] Chen, Y., Zhao, G., Wang, S., He, Y., Han, S., Du, C., Li, S., Fan, Z., Wang, C., & Wang, J. (2019). Platelet-membrane-camouflaged bismuth sulfide nanorods for synergistic radio-photothermal therapy against cancer†. Biomaterials Science, 8, 3450–3459. https://doi.org/10.1039/C9BM00599D
[2] Kang, Y., Yu*, X., Fan, X., Aodenggerile, Zhao, S., Tu, C., Yan, Z., Wang*, R., Li, W., & Qiu*, H. (2020). Tetramodal Imaging and Synergistic Cancer Radio-Chemotherapy Enabled by Multiple Component-Encapsulated Zeolitic Imidazolate Frameworks. ACS Nano, 14 4, 4336–4351. https://doi.org/10.1021/acsnano.9b09858
[3] Liu, H., Jiang, P., Zhang, K., & Dong, Y. (2018). Synthesis of Bismuth(III)Neodecanoate and Its Application to Poly(Vinyl Chloride) as a Thermal Stabilizer. Polymer-Plastics Technology and Engineering, 213 1, 1657–1664. https://doi.org/10.1080/03602559.2017.1410848