Safety data sheets are regulated in the EU (and the EEA) via article 31 and Annex II of EU REACH.
In 2020, an amendment was made to EU REACH, that changed the safety data sheet requirements and the SDS format, effective 1st Jan 2021.
The instrument that does this is here. The SDS guidance was re-issued here.
Safety data sheets not complying with this 2020 change may continue to be provided until 31 December 2022.
The new EU SDS will apply to all goods circulating in the EU and in Northern Ireland.
[this change is not incorporated in UK REACH]