TRIOLEIN (CAS#: 122-32-7) 1X2ML

Geng, Yuan, et al. RSC advances 13.49 (2023): 34772-34781.

Triolein, a triglyceride composed of three oleic acid molecules esterified to glycerol, demonstrates excellent potential as a dispersion medium for graphene in advanced lubricant formulations. In a recent study, a blend of graphene and triolein (mass ratio 1 : 4) was developed as a water-based drilling fluid lubricant, aimed at improving lubrication efficiency under high-temperature drilling conditions.
The preparation involved dispersing graphene into triolein via mechanical stirring at 60 °C, ensuring homogeneity and stable suspension within the lipid matrix. The resulting black, uniform mixture was incorporated into drilling fluids for evaluation. Friction and wear tests, adhesion coefficient measurements, and extreme pressure lubrication assessments were performed before and after thermal aging. Additional rheological and filtration analyses were conducted to assess compatibility with drilling fluid performance requirements.
Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) provided mechanistic insight, revealing strong graphene-triolein interactions and uniform surface coverage on frictional interfaces. Compared to conventional lubricants, the triolein-graphene system significantly enhanced lubrication performance and mechanical stability at elevated temperatures, reducing wear and maintaining low friction coefficients.
This study highlights triolein's dual role as both a dispersion medium and a functional component in lubricant formulations, enabling efficient graphene integration for demanding drilling environments. Its high thermal stability and chemical compatibility make it an attractive candidate for next-generation drilling fluid additives.

Gao, Xiaozhong, et al. Science of The Total Environment 798 (2021): 148985.

Triolein, a neutral triglyceride composed of glycerol and three oleic acid residues, has been widely employed as a hydrophobic phase in passive sampling devices due to its strong affinity for lipophilic organic pollutants. In this study, triolein was embedded into a cellulose acetate membrane (TECAM) to assess its performance in monitoring bisphenol analogues (BPs) in aquatic environments.
Fifteen BPs with varying hydrophobicity were tested in dynamic accumulation experiments over 72 h. Twelve hydrophobic BPs (log Kow > 3) accumulated in the TECAM at concentrations ranging from 251 ng g⁻¹ to 6283 ng g⁻¹, while three hydrophilic BPs showed negligible uptake. Molecular structure-particularly hydrophilic and hydrophobic substituent groups-was a key determinant of accumulation behavior.
Passive sampling parameters, including uptake (ku), elimination (ke), and partition coefficients (kp), correlated with both log Kow and structural features. Environmental factor evaluation revealed that water flow rate significantly influenced uptake kinetics, with higher flow enhancing mass transfer. Isotopic exchange kinetics (IEK) verification demonstrated that hydrophobic BPs could be calibrated using performance reference compounds (PRCs), supporting field applicability.
Field deployment in river water confirmed TECAM's capability to estimate time-weighted average concentrations of two hydrophobic BPs, producing results comparable to active sampling and solid-phase extraction (SPE). However, the technique showed limited efficiency for hydrophilic and moderately hydrophobic BPs, suggesting future research should explore hydrophilic-lipophilic balance (HLB) sorbent-based membranes.
This work underscores triolein's efficacy as a hydrophobic phase for selective, long-term monitoring of lipophilic pollutants in surface waters.

Endo, Yusuke, et al. Biomass and Bioenergy 108 (2018): 433-438.

Triolein, a triglyceride composed of three oleic acid residues esterified to glycerol, serves as an effective substrate for the enzymatic synthesis of biodiesel. In this study, ethyl oleate (fatty acid ethyl ester, FAEE) was produced through the transesterification of triolein with ethanol using Novozym® 435, an immobilized lipase, in a fixed-bed reactor operated in circulating batch mode.
Reaction conditions were optimized at 303 K with a circulating flow rate of 20 cm³ min⁻¹. The miscibility of triolein-ethanol mixtures was thermodynamically predicted, guiding the feed composition to enhance reaction efficiency. Conversion of triolein to ethyl oleate increased with higher ethanol molar ratios, demonstrating the importance of substrate stoichiometry in maximizing yield. Glycerin, a by-product, was continuously removed from the enzyme bed via circulation, mitigating enzyme inactivation. A modified Michaelis-Menten kinetic model was developed to describe both enzyme inactivation by glycerin and the effect of ethanol concentration during the reaction.
This methodology enabled high-yield production of ethyl oleate under mild, environmentally friendly conditions, highlighting the utility of triolein as a renewable feedstock for biodiesel synthesis. The circulating batch reactor design further optimized enzyme longevity and process efficiency, establishing a robust framework for sustainable fatty acid ester production.
Triolein's physicochemical properties, including its hydrophobic triglyceride structure and compatibility with lipase catalysis, make it an ideal candidate for industrial-scale biotransformation into high-value biodiesel products.