---
kind: "section"
citation: "27 C.F.R. § 21.117"
title: "27"
number: "21.117"
heading: "Methyl isobutyl ketone."
url: "https://uscodex.org/cfr/27/21.117"
---

# §21.117. Methyl isobutyl ketone.

- (a) **Acidity (as acetic acid).** 0.02 percent by weight, maximum.
- (b) **Color.** Colorless.
- (c) **Distillation range.** (For applicable ASTM method, see 1980 Annual Book of ASTM Standards, [Part 29](/cfr/27/part29.md), page 147, Standard No. D 1153-77; for incorporation by reference, see [§ 21.6(b)](/cfr/27/21.6.md?p=b).) No distillate should come over below 111 °C. and none above 117 °C.
- (d) **Odor.** Characteristic odor.
- (e) **Specific gravity at 20 °/20 °C.** 0.799 to 0.804.

## Notes

### Amendments

[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]

### Authority

Authority: 5 U.S.C. 552(a); 26 U.S.C. 5242, 7805.

### Source

Source: T.D. ATF-133, 48 FR 24673, June 2, 1983, unless otherwise noted.

### Amendments

[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]