The description of the item 28521010 of Australia HScode: Compounds, inorganic or organic, of mercury, chemically defined (excl. amalgams): Compounds of mercury, as follows (a) aluminates; (b) chromates, dichromates or peroxochromates; (c) goods of 2931.90.10; (d) goods of 2937.50.10; (e) peroxoborates (perborates); (f) salts of the carboxylic acids of 2915.70.00, 2915.90.00, 2916.15.00, 2916.19.10 or 2918.9; (g) salts and derivatives of the carboxylic acids of 2917.3, but not including salts of terephthalic acid; (h) toluidine derivatives containing fluoro, nitro or propyl groups; (ij) unmixed products for photographic uses, put up in measures portions or put up for retail sale in a form ready for use