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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 27 - Alcohol, Tobacco Products and Firearms |
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Chapter I - Alcohol and Tobacco Tax and Trade Bureau, Department of the Treasury |
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SubChapter A - Alcohol |
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Part 21 - Formulas for Denatured Alcohol and Rum |
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Subpart E - Specifications for Denaturants |
§ 21.98 - Bone oil (Dipple's oil).
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Link to an amendment published at 81 FR 59461, August 30, 2016.
(a) Color. The color shall be a deep brown.
(b) Distillation range. When 100 ml are distilled in the manner described for pyridine bases, not more than 5.0 ml should distill below 90 °C.
(c) Pyrrol reaction. Prepare a 1.0 percent solution of bone oil in 95 percent alcohol. Prepare a second solution containing 0.025 percent bone oil by diluting 2.50 ml of the first solution to 100 ml with 95 percent alcohol. Dip a splinter of pine, previously moistened with concentrated hydrochloric acid, into 10 ml of the 0.025 percent bone oil solution. After a few minutes the splinter should show a distinct red coloration.
(d) Reaction with mercuric chloride. Add 5 ml of the 1.0 percent bone oil solution above to 5 ml of a 2 percent alcoholic solution of mercuric chloride. A turbidity is formed at once which separates into a flocculent precipitate on standing several minutes. Add 5.0 ml of the 0.025 percent bone oil solution to 5.0 ml of a 2.0 percent alcoholic solution of mercuric chloride. A faint turbidity appears after several minutes.
[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]