1. CFR (Code of Federal Regulations), (Title 21, chapter I, Volume 5). 21CFR347.10 https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=347.10&SearchTerm=lanolin. (assessed on 18 January 2023).
2. CFR (Code of Federal Regulations), (Title 21, chapter I, Volume 3). 21CFR180.25. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=180.25. (assessed on 18 January 2023).
3. Expert committee on food additives;2-Propylene glycol. WHO Technical Report Series,2002
4. N.A. See, Toxicity of excipients—a food and drug administration perspective;Osterberg;Int. J. Toxicol.,2003