[Code of Federal Regulations]
[Title 21, Volume 1]
[Revised as of April 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR73.50]
[Page 343]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES
PART 73 LISTING OF COLOR ADDITIVES EXEMPT FROM CERTIFICATION--Table of
Subpart A Foods
Sec. 73.50 Ultramarine blue.
(a) Identity. The color additive ultramarine blue is a blue pigment
obtained by calcining a mixture of kaolin, sulfur, sodium carbonate, and
carbon at temperatures above 700 [deg]C. Sodium sulfate and silica may
also be incorporated in the mixture in order to vary the shade. The
pigment is a complex sodium aluminum sulfo-silicate having the
approximate formula
Na7Ai6Si6O24
S3.
(b) Specifications. Ultramarine blue shall conform to the following
specifications:
Lead (as Pb), not more than 10 parts per million.
Arsenic (as As), not more than 1 part per million.
Mercury (as Hg), not more than 1 part per million.
(c) Uses and restrictions. The color additive ultramarine blue may
be safely used for coloring salt intended for animal feed subject to the
restriction that the quantity of ultramarine blue does not exceed 0.5
percent by weight of the salt.
(d) Labeling requirements. The color additive shall be labeled in
accordance with the requirements of Sec. 70.25 of this chapter.
(e) Exemption from certification. Certification of this color
additive is not necessary for the protection of the public health, and
therefore batches thereof are exempt from the certification requirements
of section 721(c) of the act.
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