[Title 21 CFR 173.310] [Code of Federal Regulations (annual edition) - April 1, 1996 Edition] [Title 21 - FOOD AND DRUGS] [Chapter I - FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED)] [Subchapter B - FOOD FOR HUMAN CONSUMPTION] [Part 173 - SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION] [Subpart D - Specific Usage Additives] [Sec. 173.310 - Boiler water additives.] [From the U.S. Government Publishing Office]21 FOOD AND DRUGS 3 1996-04-01 1996-04-01 false Boiler water additives. 173.310 Sec. 173.310 FOOD AND DRUGS FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION Specific Usage Additives Sec. 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: ------------------------------------------------------------------------ Substances Limitations ------------------------------------------------------------------------ Acrylamide-sodium acrylate resin... Contains not more than 0.05 percent by weight of acrylamide monomer. Acrylic acid/2-acrylamido-2-methyl Total not to exceed 20 parts per propane sulfonic acid copolymer million (active) in boiler having a minimum weight average feedwater. 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 Administration, 200 C St. SW., Washington, DC 20204, or may be examined at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Ammonium alginate.................. ................................... Cobalt sulfate (as catalyst)....... ................................... 1-hydroxyethylidene-1,1- ................................... diphosphonic acid (CAS Reg. No. 2809-21-4) and its sodium and potassium salts. Lignosulfonic acid................. ................................... Monobutyl ethers of polyethylene- Minimum mol. wt. 1,500. polypropylene glycol produced by random condensation of a 1:1 mixture by weight of ethylene oxide and propylene oxide with butanol. Poly(acrylic acid-co- Total not to exceed 1.5 parts per hypophosphite), sodium salt (CAS million in boiler feed water. Reg. No. 71050-62-9), produced Copolymer contains not more than from a 4:1 to a 16:1 mixture by 0.5 percent by weight of acrylic weight of acrylic acid and sodium acid monomer (dry weight basis). hypophosphite. Polyethylene glycol................ As defined in Sec. 172.820 of this chapter. Polymaleic acid [CAS Reg. No. 26099- Total not to exceed 1 part per 09-2], and/or its sodium salt. million in boiler feed water [CAS Reg. No. 30915-61-8 or CAS (calculated as the acid). Reg. No. 70247-90-4]. Polyoxypropylene glycol............ Minimum mol. wt. 1,000. Potassium carbonate................ ................................... Potassium tripolyphosphate......... ................................... Sodium acetate..................... ................................... Sodium alginate.................... ................................... Sodium aluminate................... ................................... Sodium carbonate................... ................................... Sodium carboxymethylcellulose...... Contains not less than 95 percent sodium carboxymethylcellulose on a dry-weight basis, with maximum substitution of 0.9 carboxymethylcellulose groups per anhydroglucose unit, and with a minimum viscosity of 15 centipoises for 2 percent by weight aqueous solution at 25 C; by method prescribed in the ``Food Chemicals Codex,'' 3d Ed. (1981), pp. 280-282, which is incorporated by reference. Copies may be obtained from the National Academy Press, 2101 Constitution Ave. NW., Washington, DC 20418, or may be examined at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC 20408. Sodium glucoheptonate.............. Less than 1 part per million cyanide in the sodium glucoheptonate. Sodium hexametaphosphate........... ................................... Sodium humate...................... ................................... Sodium hydroxide................... ................................... Sodium lignosulfonate.............. ................................... Sodium metabisulfite............... ................................... Sodium metasilicate................ ................................... [[Page 127]] Sodium nitrate..................... ................................... Sodium phosphate (mono-, di-, tri-) ................................... Sodium polyacrylate................ ................................... Sodium polymethacrylate............ ................................... Sodium silicate.................... ................................... Sodium sulfate..................... ................................... Sodium sulfite (neutral or ................................... alkaline). Sodium tripolyphosphate............ ................................... Tannin (including quebracho ................................... extract). Tetrasodium EDTA................... ................................... Tetrasodium pyrophosphate.......... ................................... ------------------------------------------------------------------------ ------------------------------------------------------------------------ Substances Limitations ------------------------------------------------------------------------ Cyclohexylamine......................... Not to exceed 10 parts per million in steam, and excluding use of such steam in contact with milk and milk products. Diethylaminoethanol..................... Not to exceed 15 parts per million in steam, and excluding use of such steam in contact with milk and milk products. Hydrazine............................... Zero in steam. Morpholine.............................. Not to exceed 10 parts per million in steam, and excluding use of such steam in contact with milk and milk products. Octadecylamine.......................... Not to exceed 3 parts per million in steam, and excluding use of such steam in contact with milk and milk products. Trisodium nitrilotriacetate............. Not to exceed 5 parts per million in boiler feedwater; not to be used where steam will be in contact with milk and milk products. ------------------------------------------------------------------------ (e) To assure safe use of the additive, in addition to the other information required by the Act, the label or labeling shall bear: (1) The common or chemical name or names of the additive or additives. (2) Adequate directions for use to assure compliance with all the provisions of this section. [42 FR 14526, Mar. 15, 1977, as amended at 45 FR 73922, Nov. 7, 1980; 45 FR 85726, Dec. 30, 1980; 48 FR 7439, Feb. 22, 1983; 49 FR 5748, Feb. 15, 1984; 49 FR 10106, Mar. 19, 1984; 50 FR 49536, Dec. 3, 1985; 53 FR 15199, Apr. 28, 1988; 54 FR 31012, July 26, 1989; 55 FR 12172, Apr. 2, 1990; 61 FR 14245, Apr. 1, 1996]