Calendula oil

Catalog	FFC70892205
CAS	70892-20-5
Synonyms	Marigold pot absolute
Purity	98%+
Density	0.9100-0.9380 g/mL at 25 °C(lit.)
Physical State	Liquid
Refractive Index	n20/D 1.4510-1.4680(lit.)
Storage Conditions	Dry place

Case Study

Esters of calendula oil are used as reactive diluents

Biermann, Ursula, et al. European journal of lipid science and technology 112.1 (2010): 103-109.

Abstract: A simple protocol for the transesterification of highly unsaturated vegetable oils such as calendula oil and tung oil catalyzed by sodium methoxide is described. The transesterification of calendula oil with alcohols such as methanol, ethanol and isopropanol afforded the corresponding calendula oil esters, which were tested as reactive diluents for alkyd resins in coating formulations. In particular, ethyl and isopropyl calendula oil esters showed good properties including low viscosity and good drying properties.
Experimental Methods: Calendula oil , methanol abs. and hydrotalcite were magnetically stirred under reflux in a nitrogen atmosphere. The reaction was followed by thin layer chromatography . The transesterification reaction was quantitative after a reaction time of 48 h. The hydrotalcite was removed by filtration and the methanol was removed in vacuo. Petroleum ether was added and washed with H2O. The organic layer was dried over NaSO4, filtered and the solvent evaporated.

Study on the physical properties of topical formulations supplemented with calendula oil

Mishra, Arun K., Amrita Mishra, and Pronobesh Chattopadhyay.Oriental pharmacy and experimental medicine 12 (2012): 35-40.

Abstract: The changes in physical properties of topical formulations after addition of calendula oil containing flavonoids were evaluated. In addition, the photoprotective effect of these topical formulations against UV-induced sunburn was evaluated according to the sun protection factor. Formulations added with sunflower oil were used to compare physical stability and photoprotective activity. Formulations added with calendula oil exhibited an average pH of 7.2 and pseudoplastic behavior. This study on physical stability and photoprotective activity of topical formulations can aid in the development of sunscreen formulations.
Experimental Methods: More than 20 cosmetic bases were developed by varying the ratio of oil and water phase ingredients and the best cream base formulation was optimized after preliminary stability testing and selected for further addition of calendula oil. The ingredients used in the formulations included stearyl alcohol, beeswax, sorbitan monooleate, sorbitol solution 70% USP, polysorbate 80, methylparaben, glycerin, propylparaben, and deionized water. Methylparaben and propylparaben were used as preservatives. Glycerin was used as a humectant. Deionized water was used to prepare the formulation. The contents of the oil phase and the water phase were heated to 70°C separately. The oil phase was then slowly added to the water phase with constant stirring to form a coarse emulsion. This was cooled to about 55°C and homogenized manually for 45 minutes. The resulting material was stirred and cooled until it solidified.