Table of Food Additive Specifications

Citrus red no. 2 is 1-(2,5-dimethoxyphenylazo)-2-naphthol and:

1. must contain at least 98% dye; and
2. must not contain more than:
   1. 0.5% volatile matter (at 100°C),
   2. 0.3% sulphated ash,
   3. 0.3% water soluble matter,
   4. 0.5% carbon tetrachloride insoluble matter,
   5. 0.05% uncombined intermediates,
   6. 2.0% subsidiary dyes,
   7. 1 ppm of arsenic, and
   8. 10 ppm of lead.

Ponceau SX is disodium salt of 2-(5-sulpho-2,4-xylylazo)-1-naphthol-4-sulphonic acid and:

1. must contain at least 85% dye; and
2. must not contain more than:
   1. 0.2% water insoluble matter,
   2. 0.2% combined ether extracts,
   3. 1.0% subsidiary dyes,
   4. 0.5% intermediates,
   5. 3 ppm of arsenic, and
   6. 10 ppm of lead.