Subheading Note
- In this Chapter the following have the meanings hereby assigned to them: 
      
- 
            Zinc, not alloyed
            
Metal containing by weight at least 97.5% of zinc.
 - 
            Zinc alloys
            
Metallic substances in which zinc predominates by weight over each of the other elements, provided that the total content by weight of such other elements exceeds 2.5%.
 - 
            Zinc dust
            
Dust obtained by condensation of zinc vapour, consisting of spherical particles which are finer than zinc powders. At least 80% by weight of the particles pass through a sieve with 63 micrometres (microns) mesh. It must contain at least 85% by weight of metallic zinc.
 
 
 Note 1 repealed operative 1/1/22.