Recently, ISO released a revised version of the toy certain element migration standard ISO 8124-3:2020/Amd.1:2023. The main revisions of this standard are as follows:

1. Add definitions of "Slime" and "modeling clay and putty".

2. For modeling clay and putty, the migration requirements for boron (B) element are added, and the limit value of barium (Ba) element are revised; Add the limit value of 9 elements migration on slime; Add correction factor for boron (B) element.

Requirements and correction factors for element migration limits in ISO 8124-3:2020/Amd 1:2023:

Requirements and correction factors for element migration limits in ISO 8124-3:2020:

Boron may exist in some sticky toys in the form of boric acid or borate, such as borax which is often used as a crosslinking agent to achieve the ductility and good hand feel of such toys. Borax has reproductive and developmental toxicity, and long-term exposure to toys containing borax will have an impact on children‘s endocrine system and reproductive health. EU toy standard EN71-3 has long required the migration of boron elements in toys, while other toy standards such as GB6675 and ASTM F963 have not yet put forward restrictions on boron elements.