§ 21.118 Methyl n-butyl ketone.

1. (a) Acidity (as acetic acid). 0.02 percent by weight, maximum.
2. (b) Color. Colorless.
3. (c) Odor. Characteristic odor.
4. (d) Refractive index at 20 °C. 1.396 to 1.404.
5. (e) Specific gravity at 20 °/20 °C. 0.800 to 0.835.
6. (f) Distillation range. No distillate should come over below 123 °C. and none above 129 °C.

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