Section 186.1770 - Sodium oleate(a) Sodium oleate (C18H33O2Na, CAS Reg. No. 143-19-1) is the sodium salt of oleic acid (cis-9-octadecenoic acid). It exists as a white to yellowish powder with a slight tallow-like odor. Commercially, sodium oleate is made by mixing and heating flaked sodium hydroxide and oleic acid.(b) In accordance with § 186.1(b)(1) , the ingredient is used as a constituent of paper and paperboard for food packaging and as a component of lubricants with incidental food contact in accordance with § 178.3570 of this chapter, with no limitation other than current good manufacturing practice.(c) Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.51 FR 39372, Oct. 28, 1986