When evaluating Methyl Oleate, the purity level (typically >70% to 99%) is the most critical factor. You must verify the Iodine Value, which indicates the degree of unsaturation, and the Acid Value (ideally <1.0 mg KOH/g) to ensure stability and prevent equipment corrosion. For lubricant or surfactant applications, check the Cloud Point and Pour Point to ensure performance in low-temperature environments. Additionally, confirm the moisture content is below 0.1% to avoid hydrolysis during storage.