• § 173.300 - Chlorine dioxide.

• § 173.310 - Boiler water additives.

• § 173.315 - Chemicals used in washing or to assist in the peeling of fruits and vegetables.

• § 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

• § 173.322 - Chemicals used in delinting cottonseed.

• § 173.325 - Acidified sodium chlorite solutions.

• § 173.340 - Defoaming agents.

• § 173.342 - Chlorofluorocarbon 113 and perfluorohexane.

• § 173.345 - Chloropentafluoroethane.

• § 173.350 - Combustion product gas.

• § 173.355 - Dichlorodifluoromethane.

• § 173.356 - Hydrogen peroxide.

• § 173.357 - Materials used as fixing agents in the immobilization of enzyme preparations.

• § 173.360 - Octafluorocyclobutane.

• § 173.368 - Ozone.

• § 173.370 - Peroxyacids.

• § 173.375 - Cetylpyridinium chloride.

• § 173.385 - Sodium methyl sulfate.

• § 173.395 - Trifluoromethane sulfonic acid.

• § 173.400 - Dimethyldialkylammonium chloride.

• § 173.405 - Sodium dodecylbenzenesulfonate.