Food and Drug Regulations

B.06.053 [S]. Citrus Red No. 2 shall be 1-(2,5-dimethoxyphenylazo)-2-naphthol, shall contain not less than 98% dye and may contain not more than

• (a) 0.5% volatile matter (at 100°C);

• (b) 0.3% sulphated ash;

• (c) 0.3% water soluble matter;

• (d) 0.5% carbon tetrachloride insoluble matter;

• (e) 0.05% uncombined intermediates;

• (f) 2.0% subsidiary dyes;

• (g) 1 part per million of arsenic; and

• (h) 10 parts per million of lead.