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21 CFR 173.310 - Boiler water additives.

Updated to: April 01, 2011

Linked as: http://doc.docsou.com/vid/173-310-boiler-water-additives-19706211

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Title 21: Food and Drugs

CHAPTER I: FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED)

SUBCHAPTER B: FOOD FOR HUMAN CONSUMPTION (CONTINUED)

PART 173: SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION

Subpart D: Specific Usage Additives

173.310 - Boiler water additives.

Boiler water additives may be safely used in the preparation of steam that will contact food, under the following conditions:

(a) The amount of additive is not in excess of that required for its functional purpose, and the amount of steam in contact with food does not exceed that required to produce the intended effect in or on the food.

(b) The compounds are prepared from substances identified in paragraphs (c) and (d) of this section, and are subject to the limitations, if any, prescribed:

(c) List of substances:

SubstancesLimitationsAcrylamide-sodium acrylate resinContains not more than 0.05 percent by weight of acrylamide monomer.Acrylic acid/2-acrylamido-2-methyl propane sulfonic acid copolymer having a minimum weight average molecular weight of 9,900 and a minimum number average molecular weight of 5,700 as determined by a method entitled ?Determination of Weight Average and Number Average Molecular Weight of 60/40 AA/AMPS? (October 23, 1987), which is incorporated by reference in accordance with 5 U.S.C. 552(a). Copies may be obtained from the Center for Food Safety and Applied Nutrition (HFS-200), Food and Drug Total not to exceed 20 parts per million (active) in boiler feedwater.at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to:

http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

Ammonium alginate

Cobalt sulfate (as catalyst)

1-hydroxyethylidene-1,1-diphosphonic acid (CAS Reg. No. 2809-21-4) and its sodium and potassium saltsLignosulfonic acid

Monobutyl ethers of polyethylene-polypropylene glycol produced by random

condensation of a 1:1 mixture by weight of ethylene oxide and propylene oxide with Minimum mol. wt. 1,500.butanol

Poly(acrylic acid-co-hypophosphite), sodium salt (CAS Reg. No. 71050-62-9), produced Total not to exceed 1.5parts per million in boiler feed water. Copolymer contfrom a 4:1 to a 16:1 mixture by weight of acrylic acid and sodium hypophosphitemore than 0.5 percent by weight of acrylic acid monomer (dry weight basis).Polyethylene glycolAs defined in ? 172.820 of this chapter.Polymaleic acid [CAS Reg. No. 26099-09-2], and/or its sodium salt. [CAS Reg. No.

Total not to exceed 1 part per million in boiler feed water (calculated as the ac

30915-61-8 or CAS Reg. No. 70247-90-4]Polyoxypropylene glycolMinimum mol. wt. 1,000.Potassium carbonate

Potassium tripolyphosphateSodium acetateSodium alginateSodium aluminateSodium carbonate

Contains not less than 95 percent sodium carboxymethylcellulose on a dry-wewith maximum substitution of 0.9 carboxymethylcellulose groups peranhydrunit, and with a minimum viscosity of 15 centipoises for 2 percent by weight solution at 25 ?C; by the method prescribed in the ?Food Chemicals Codex,? (1996), pp. 744-745, which is incorporated by reference in accordance with 5 (a) and 1 CFRpart 51. Copies are available from the National Academy Press2101 Constitution Ave. NW., Washington, DC 20055 (Internet address

http://www.nap.edu), or may be examined at the Center for Food Safety andANutrition\'s Library, Food and Drug Administration, 5100 PaintBranch Pkwy.

Sodium carboxymethylcellulose