Must I keep all of the SDSs which are sent to my company?

Employers are responsible for having SDSs for all hazardous chemicals that are in the workplace, and ensuring that they are readily accessible to all affected employees during each work shift, per 29 CFR 1910.1200(g)(8). OSHA does not require nor encourage employers to maintain SDSs for non-hazardous chemicals. Consequently, an employer is free to discard SDSs for non-hazardous chemicals.

You are not required to retain SDSs simply because they were sent to you. OSHA encourages your use of professional judgment in removing unnecessary SDSs from your files.