§173.2a. Classification of a material having more than one hazard. — Inbound Citations

(ii) The hazard precedence prescribed in § 173.2a of this subchapter;

(d) Articles containing hazardous materials must be assigned to the appropriate class or division determined by the hazards present using, where applicable, the precedence criteria prescribed in § 173.2a for each of the hazardous materials contained in the article. If hazardous materials classified as Class 9 are contained within the article, all other hazardous materials present in the article must be considered to present a higher hazard.