So here’s a trick question for you IH professionals… When I get my new SDSs, do I have to retain my old MSDS for 30 years?

One standard that OSHA failed to update when they revised 1910.1200 was 1910.1020 – Access to employee exposure and medical records.  This standard still uses the term MSDS and does not address my question about the changing of MSDS for the new SDS.  Granted, a lot of the exposure info on the new SDS(s) has not changed, but some chemicals did get “classified” differently and may become the focus of some IH monitoring.  So my question is: