| 1882 | Mercurous oxide，blackAcc.Hahnemann, Mercurio(I)oxymercury(I), Mercurious oxide (black), Mercury oxide (Hg2O), Mercury(I) oxide, Mercury(I)oxide, Oxydimercury(I) | | Poisonous and Deleterious Substances Control Act | Deleterious Substances | | Management of the storing amount; Locked storage; Showing “Deleterious substance, not for medical use” on containers and storage, restriction of manufacture, import, sale, and handling | Ministry of Health, Labour and Welfare | | Poisonous and Deleterious Substances Control Act |
| 4227 | Mercurous oxide，blackAcc.Hahnemann, Mercurio(I)oxymercury(I), Mercurious oxide (black), Mercury oxide (Hg2O), Mercury(I) oxide, Mercury(I)oxide, Oxydimercury(I) | | Waste Management and Public Cleansing Act | Specially Controlled Industrial Waste | | Waste treatment by yourself or commission permitted vendors for the treatment; appointment of Specially Controlled Industrial Waste Manager; making an annual logbook for transport and disposal and keeping its record for 126 years | Ministry of the Environment | | |