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Mineral oil grade classifications.7,29,30 C, carbon atoms; CFR, Code of Federal Regulations; cGMP, Current Good Manufacturing Practices; FDA, United States Food and Drug Administration; Ph Eur, European Pharmacopoeia; USP-NF, United States Pharmacopoeia–National Formulary. Asterisks and arrows represent refinement/hydrogenation processing steps: removal of impurities such as aromatic compounds, unsaturated compounds, and nitrogen- or sulfur-containing compounds.
