Kashinhou (化審法), short for 化学物質の審査及び製造等の規制に関する法律 (Kagaku Busshitsu no Shinsa Oyobi Seizoutou no Kisei ni Kansuru Houritsu), ("Law Concerning the Examination and Regulation of Manufacture, etc.
The more concise abbreviated name is 化学物質審査規制法 (Kagaku Busshitsu Shinsa Kiseihou), or "Chemical Substances Control Law".
This law was established to provide a framework to examine the import, manufacture, and use of industrial chemicals and refractory organic substances for persistence and health consequences, as well as the necessary legal restrictions in order to achieve those aims.
In 1973, this law was established, radically overturning a prevailing attitude that long term contaminants bioaccumulating in humans was not problematic.
In 2003, under pressure from the Organisation for Economic Co-operation and Development, a third Section was created to surveillance of chemical substances harmful to flora and fauna but not to humans.