Is there a required SDS format?

Yes. OSHA requires that SDSs be in the GHS-compliant, 16-section format under 1910.1200(g). Those sections are as follows:

1. Identification
2. Hazard(s) identification
3. Composition/ingredients
4. First-aid measures
5. Fire-fighting measures
6. Accidental release measures
7. Handling and storage
8. Exposure control/personal protection
9. Physical and chemical properties
10. Stability and reactivity
11. Toxicological information
12. Ecological information
13. Disposal considerations
14. Transport information
15. Regulatory information
16. Other information

If no relevant information is found for one of the sections or one of the categories was unavailable at the time of preparation, the SDS must indicate that no information was found; blank spaces are not permitted. While OSHA cannot enforce Sections 12 through 15 of the SDS, to be GHS-compliant, the SDS must contain those sections as well.