CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION (parts 100 to 191) > PART 178—INDIRECT FOOD ADDITIVES: ADJUVANTS, PRODUCTION AIDS, AND SANITIZERS > SUBPART D—Certain Adjuvants and Production Aids (§178.3010 to §178.3950) > 178.3120—Animal glue.

178.3120—Animal glue.

Animal glue may be safely used as a component of articles intended for use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food, subject to the provisions of this section.
(a) Animal glue consists of the proteinaceous extractives obtained from hides, bones, and other collagen-rich substances of animal origin (excluding diseased or rotted animals), to which may be added other optional adjuvant substances required in its production or added to impart desired properties.
(b) The quantity of any substance employed in the production of animal glue does not exceed the amount reasonably required to accomplish the intended physical or technical effect nor any limitation further provided.
(c) Any substance employed in the production of animal glue and which is the subject of a regulation in parts 174, 175, 176, 177, 178 and § 179.45 of this chapter conforms with any specification in such regulation.
(d) Optional adjuvant substances employed in the production of animal glue include:
(1) Substances generally recognized as safe in food.
(2) Substances subject to prior sanction or approval for use in animal glue and used in accordance with such sanction or approval.
(3) Substances identified in this paragraph (d)(3) and subject to such limitations as are provided:
List of substances Limitations
Alum (double sulfate of aluminum and ammonium, potassium, or sodium)
4-Chloro-3-methylphenol(p-chlorome-tacresol) For use as preservative only.
Chromium potassium sulfate (chrome alum) For use only in glue used as a colloidal flocculant added to the pulp suspension prior to the sheet-forming operation in the manufacture of paper and paper board.
3,5-Dimethyl-1,3,5,H-tetrahydrothiadia-zine-2-thione For use as preservative only.
Disodium cyanodithioimidocarbonate Do.
Defoaming agents As provided in § 176.210 of this chapter.
Ethanolamine
Ethylenediamine
Formaldehyde For use as a preservative only.
Potassium N-methyldithiocarbamate Do.
Potassium pentachlorophenate Do.
Rosins and rosin derivatives As provided in § 178.3870 .
Sodium chlorate
Sodium dodecylbenzenesulfonate
Sodium 2-mercaptobenzothiazole For use as preservative only.
Sodium pentachlorophenate Do.
Sodium o-phenylphenate Do.
Zinc dimethyldithiocarbamate Do.
Zinc 2-mercaptobenzothiazole Do.
(e) The conditions of use are as follows:
(1) The use of animal glue in any substance or article that is the subject of a regulation in this subpart conforms with any specifications or limitations prescribed by such regulation for the finished form of the substance or article.
(2) It is used as an adhesive or component of an adhesive in accordance with the provisions of § 175.105 of this chapter.
(3) It is used as a colloidal flocculant added to the pulp suspension prior to the sheet-forming operation in the manufacture of paper and paperboard.
(4) It is used as a protective colloid in resinous and polymeric emulsion coatings.