§ 172.824 Sodium mono- and dimethyl naphthalene sulfonates.
The food additive sodium mono- and dimethyl naphthalene sulfonates may be safely used in accordance with the following prescribed conditions:
?。╝） The additive has a molecular weight range of 245–260.
?。╞） The additive is used or intended for use:
?。?） In the crystallization of sodium carbonate in an amount not to exceed 250 parts per million of the sodium carbonate. Such sodium carbonate is used or intended for use in potable water systems to reduce hardness and aid in sedimentation and coagulation by raising the pH for the efficient utilization of other coagulation materials.
?。?） As an anticaking agent in sodium nitrite at a level not in excess of 0.1 percent by weight thereof for authorized uses in cured fish and meat.
?。╟） In addition to the general labeling requirements of the Act:
?。?） Sodium carbonate produced in accordance with paragraph （b）（1） of this section shall be labeled to show the presence of the additive and its label or labeling shall bear adequate directions for use.
（2） Sodium nitrite produced in accordance with paragraph （b）（2） of this section shall bear the labeling required by §172.175 and a statement declaring the presence of sodium mono- and dimethyl naphthalene sulfonates.
[42 FR 14491, Mar. 15, 1977, as amended at 63 FR 7069, Feb. 12, 1998]
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