Importation of crocidolite asbestos faces severe regulatory restrictions under TSCA. EPA has historically prohibited or sharply limited asbestos imports, and any prospective importer must consult EPA's current TSCA rules and obtain appropriate legal guidance before attempting entry — the consequences of non-compliance include seizure, civil penalties, and criminal liability.

Crocidolite (blue asbestos) is a sodium iron amphibole fiber classified separately from chrysotile (white, serpentine asbestos) and other amphibole varieties such as amosite. It is classified under HTS heading 2524.10 specifically. Regulators and health authorities consider crocidolite particularly hazardous due to its fiber geometry and biopersistence, which is why it has been among the first asbestos types banned in many jurisdictions worldwide.