First and foremost, it is the responsibility of chemical manufacturers to make sure that MSDSs are accurate, complete and to some degree, easy-to-understand... although the last part is somewhat open to interpretation. As an employer, if you notice something on an MSDS that appears to be incomplete, inaccurate or confusing, we recommend that you contact your supplier or the manufacturer immediately and review your concerns. If there is something inaccurate or missing, the manufacturer is obligated by law to correct the error.
OSHA and other standards-setting organizations like ANSI encourage chemical manufacturers to make MSDSs easier to read and navigate. For instance, ANSI recommends a 16-part MSDS that has a standard style format specified by ANSI Z4001-1993.