Oleyl Oleate

This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition

Issued and maintained by the United States Pharmacopeial Convention (USP)

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C₃₆H₆₈O₂ 532.94 (ERR 1-Jan-2019)

9-Octadecenoic acid, (Z)-, oleyl ester;

Oleyl oleate CAS RN®: 3687-45-4.

1 DEFINITION

Oleyl Oleate consists of esters of oleyl alcohol and high molecular weight fatty acids, principally oleic acid.

2 IDENTIFICATION

Change to read:

A. Spectroscopic Identification Tests 〈197〉, Infrared Spectroscopy: 197F▲ (CN 1-May-2020)

3 IMPURITIES

Residue on Ignition 〈281〉

Sample: 2 g

Acceptance criteria: NMT 0.1%

Arsenic, Method II 〈211〉: 2 μg/g

4 SPECIFIC TESTS

Clarity of Solution

Sample solution: 200 mg/mL in ether

Acceptance criteria: The resulting solution is clear.

Specific Gravity 〈841〉: 0.860–0.884 at 20°

Fats and Fixed Oils, Acid Value 〈401〉: NMT 3.0

Fats and Fixed Oils, Hydroxyl Value 〈401〉: NMT 10

Fats and Fixed Oils, Iodine Value 〈401〉: 70–120

Fats and Fixed Oils, Saponification Value 〈401〉: 90–125

Refractive Index 〈831〉: 1.464–1.468 at 20°

5 ADDITIONAL REQUIREMENTS

Packaging and Storage: Preserve in tight containers. No storage conditions specified.

USP Reference Standards 〈11〉

USP Oleyl Oleate RS