non-hazardous material; non-dangerous goods
Technical term used in logistics, shipping, and safety regulations to classify items that are not considered dangerous.
This package is non-hazardous material, so standard shipping is possible.
危険物 means hazardous materials or dangerous goods, the opposite of 非危険物.
Compound of 非 (hi-, 'non-') + 危険 (kiken, 'danger') + 物 (butsu, 'thing').