| 1522 | Hydrazine monohydrateDiamide hydrate, Diamide monohydrate, Diamine hydrate, Hydrazine hydrate, Hydrazine1-hydrate, Hydrazinehydrate, Hydrazinehydroxide, Idrazinaidrata | | Fire Service Act | Type 4 Ignite liquid | Class 3 petroleum Aqueous liquid | Handling or storage; Submission of a notification in the case that the amount is 20-100% of the specified value; permit required in the case that the amount is >100% of the specified value (the sum of proportions is calculated when storing/handling multiple classes in the same place) | Fire and Disaster Management Agency | | Fire Service Act |
| 2026 | Hydrazine monohydrateDiamide hydrate, Diamide monohydrate, Diamine hydrate, Hydrazine hydrate, Hydrazine1-hydrate, Hydrazinehydrate, Hydrazinehydroxide, Idrazinaidrata | | 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 |