[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of April 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR186.1797]

[Page 590]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 186_INDIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED 
AS SAFE--Table of Contents
 
        Subpart B_Listing of Specific Substances Affirmed as GRAS
 
Sec. 186.1797  Sodium sulfate.

    (a) Sodium sulfate (Na2SO4, CAS Reg. No. 7757-
82-6), also known as Glauber's salt, occurs naturally and exists as 
colorless crystals or as a fine, white crystalline powder. It is 
prepared by the neutralization of sulfuric acid with sodium hydroxide.
    (b) The ingredient is used as a constituent of paper and paperboard 
used for food packaging, and cotton and cotton fabric used for dry food 
packaging.
    (c) The ingredient is used at levels not to exceed good 
manufacturing practice in accordance with Sec. 186.1(b)(1).
    (d) Prior sanctions for this ingredient different from the uses 
established in this section do not exist or have been waived.

[45 FR 6086, Jan. 25, 1980]