Catalog NumberHG13040192
CAS Number13040-19-2
CategoryAnionic Surfactants
Use as lubricant.
Zinc Ricinoleate as Odor-Absorbing Agent in Personal Care Formulations
Dwisari, Fath, et al. Jurnal Mandala Pharmacon Indonesia 11.2 (2025): 458-464.
Body malodor results from bacterial decomposition of apocrine gland secretions into volatile compounds, with Staphylococcus epidermidis identified as a key contributor. Conventional deodorants rely on synthetic antimicrobials such as triclosan and aluminum salts that are increasingly associated with skin irritation and potential long-term health risks. Growing consumer concerns have driven interest toward natural, plant-based antibacterial alternatives. Combining botanical extracts with zinc ricinoleate, which chemically adsorbs odor-active compounds, offers a dual-action approach for skin-compatible odor control.
Experimental Protocol: Methanolic extract of Spatholobium littoralis Hassk., a Kalimantan-native medicinal plant, was prepared via maceration and incorporated into a multiphase emulsion base containing zinc ricinoleate, aluminum potassium sulfate, Carbopol 940, triethanolamine, BHT, and phenoxyethanol. Formulations (F1-F3) were evaluated for pH, spreadability, adhesiveness, homogeneity, and antibacterial activity against S. epidermidis using the disc diffusion assay.
Performance Evaluation: The extract-containing formulations exhibited a beige color, herbal aroma, and uniform texture. pH values of 4.12-4.35 fell within the dermally acceptable range. Spreadability ranged from 4.59 to 4.81 cm while adhesiveness varied from 2.04 to 3.26 min, indicating favorable application and retention properties. Antibacterial testing showed inhibition zones of 10.40-12.37 mm, statistically comparable to a commercial control (p > 0.05), demonstrating that the zinc-ricinoleate-containing formulation with S. littoralis extract offers a viable natural antibacterial deodorant option.
Zinc Ricinoleate for Antimicrobial and Deodorant Textile Finishing
Heo, Bumgi, et al. Journal of Environmental Chemical Engineering 9.2 (2021): 105083.
Zinc ricinoleate exhibits excellent selectivity toward odor-active compounds, particularly nitrogenous species such as ammonia and sulfurous compounds including hydrogen sulfide, organic sulfides, and mercaptans. This specificity makes it valuable for deodorization in cosmetics and personal hygiene. Conventional synthesis requires a catalytic reaction of water, zinc oxide, and castor oil assisted by lipase, limiting production efficiency. An electrochemical anodization route offers an enzyme-free alternative for producing zinc ricinoleate with controlled particle morphology and enhanced odor-removing capacity.
Experimental Protocol: Zinc ricinoleate was synthesized on zinc foil via electrochemical anodization at external biases from 30 V to 80 V with varied anodization times. The product was characterized by scanning electron microscopy and compared with commercially available zinc ricinoleate. Particle size distribution, surface morphology, production yield, and odor-removing capacity were quantified through standardized ammonia adsorption testing.
Performance Evaluation: Particle diameter increased from 9.3 um at 30 V to 15.2 um at 80 V, with 80 V affording the most stable particle structure and highest production yield. During anodization, particles agglomerated into larger structures with distinct spherical morphology and substantially increased surface area. This morphological enhancement contributed to an odor-removing capacity of 88% within 30 minutes, which was 2.3 times stronger than the commercial product, clearly demonstrating the superiority of the electrochemical synthesis approach.
Zinc Ricinoleate-Derived Ricinoleic Acid as Green Capping Agent for Doped Nanocrystal Synthesis
Mensah, Michael B., et al. ChemistrySelect 3.48 (2018): 13548-13552.
Ricinoleic acid (12-hydroxy-9-cis-octadecenoic acid), constituting approximately 90% of fatty acids in castor oil, is an abundant naturally renewable feedstock offering a compelling green alternative to conventionally used oleic acid for nanocrystal synthesis. A key structural advantage is the hydroxyl group on the hydrocarbon chain, which enables further functionalization of as-synthesized nanocrystals under mild conditions and improves colloidal stability in polar solvents. Metal ricinoleate complexes serve simultaneously as both precursors and surface-capping agents in doped semiconductor nanocrystal synthesis, aligning with green chemistry principles through the use of renewable feedstocks.
Experimental Protocol: Zinc and manganese ricinoleate complexes were synthesized and employed as green precursors for producing manganese-doped zinc sulfide (MnxZn1-xS) nanocrystals via thermal decomposition in a coordinating solvent system. The optical and magnetic properties of the resulting doped nanocrystals were characterized using photoluminescence (PL) spectroscopy and electron paramagnetic resonance (EPR) spectroscopy across a range of Mn doping concentrations.
Performance Evaluation: The metal ricinoleate complexes performed effectively as precursors for both binary ZnS and alloyed MnxZn1-xS nanocrystals up to approximately x=0.07. PL performance decreased and EPR signals underwent progressive spectral line broadening with increased Mn doping beyond the dilute limit (x > 0.02), consistent with established behavior for Mn-doped ZnS systems where Mn-Mn interactions become significant. The ricinoleate approach provides a renewable and functionalizable route for producing high-quality doped semiconductor nanocrystals with tunable optical and magnetic properties.