---
kind: "section"
citation: "27 C.F.R. § 21.123"
title: "27"
number: "21.123"
heading: "Pyronate."
url: "https://uscodex.org/cfr/27/21.123"
---

# §21.123. Pyronate.


Pyronate is a product of the destructive distillation of hardwood meeting the following requirements:

- (a) **Acidity (as acetic acid).** Not more than 0.1 percent by weight, determined as follows:

  Add 5.0 mL sample to 100 mL distilled water in an Erlenmeyer flask and titrate with 0.1 N NaOH to a bromthymol blue endpoint.

- (b) **Color.** The color shall be no darker than the color produced by 2.0 grams of potassium dichromate in 1 liter of water. The comparision shall be made in 4-ounce oil sample bottles viewed crosswise.
- (c) **Distillation range.** When 100 mL are distilled not more than 5 mL shall distill below 70 °C., not less than 50 mL below 160 °C., and not less than 90 mL below 205 °C.

## 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]