(a) In this section, “self-rising flour” means a combination of flour, salt, and chemical leavening ingredients. The flour must be at least of the “straight” grade, and the chemical leavening ingredients must be bicarbonate of soda and:
(1) calcium acid phosphate;
(2) sodium aluminum sulphate;
(3) cream of tartar;
(4) tartaric acid; or
(5) a combination of those ingredients.
(b) A self-rising flour or other compound by that name must produce when sold not less than one-half percent by weight of available carbon dioxide gas and may not contain more than 3-1/2 percent chemical leavening ingredients.

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