[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR173.220]

[Page 126]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 173--SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION--Table of Contents
 
 Subpart C--Solvents, Lubricants, Release Agents and Related Substances
 
Sec. 173.220  1,3-Butylene glycol.

    1,3-Butylene glycol (1,3-butanediol) may be safely used in food in 
accordance with the following prescribed conditions:
    (a) The substance meets the following specifications:
    (1) 1,3-Butylene glycol content: Not less than 99 percent.
    (2) Specific gravity at 20/20  deg.C: 1.004 to 1.006.
    (3) Distillation range: 200 deg.-215  deg.C.
    (b) It is used in the minimum amount required to perform its 
intended effect.
    (c) It is used as a solvent for natural and synthetic flavoring 
substances except where standards of identity issued under section 401 
of the act preclude such use.