[Code of Federal Regulations]
[Title 40, Volume 9]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR63.62]

[Page 88]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES--Table of Contents
 
 Subpart C--List of Hazardous Air Pollutants, Petitions Process, Lesser 
               Quantity Designations, Source Category List
 
Sec. 63.62  Redefinition of glycol ethers listed as hazardous air pollutants.

    The following definition of the glycol ethers category of hazardous 
air pollutants applies instead of the definition set forth in 42 U.S.C. 
7412(b)(1), footnote 2: Glycol ethers include mono- and di-ethers of 
ethylene glycol, diethylene glycol, and triethylene glycol R-
(OCH2CH2)n-OR'.

Where:

n = 1, 2, or 3;
R = alkyl C7 or less; or
R = phenyl or alkyl substituted phenyl;
R'= H or alkyl C7 or less; or
OR' consisting of carboxylic acid ester, sulfate, phosphate, nitrate, or 
sulfonate.

[65 FR 47348, Aug. 2, 2000]