| 3976 | 1,2-EpoxypropaneEpihydrin, Epoxy-propan, Epoxypropane, Methyl-oxiran, Methyloxirane, PO, Propene oxide, Propylene oxide | | Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof | Class I Designated Chemical Substances | | Submission of a report of the amount of transfer and emission to the environment (if more than 1t per year) | Ministry of Economy, Trade and Industry | | |
| 959 | 1,2-EpoxypropaneEpihydrin, Epoxy-propan, Epoxypropane, Methyl-oxiran, Methyloxirane, PO, Propene oxide, Propylene oxide | | Fire Service Act | Type 4 Ignite liquid | Specific ignitions | 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 |
| 842 | 1,2-EpoxypropaneEpihydrin, Epoxy-propan, Epoxypropane, Methyl-oxiran, Methyloxirane, PO, Propene oxide, Propylene oxide | | High Pressure Gas Safety Act | Combustible gases | | Good ventilation in storage; no fire; installation of the detection and warning facility for gas leakage; external safety inspection at least once a year; periodical self-inspection at least once a year | Ministry of Economy, Trade and Industry | | High Pressure Gas Safety Act |