I authored an entire MSDS today, all sixteen sections of it. Had previously spent many hours looking up stuff because even though I had MSDSs from the suppliers for all of the raw materials going into the product, I like to go back to primary sources and not risk copying somebody else's mistakes or unwarranted assumptions. But holy cow, what a task. When I finished I told my boss I felt like I'd birthed a baby.
"Congratulations!" he said.
Have a whole bunch more to go - actually the rest of them will mostly be review, but there's the aforementioned going back to sources process, so it's still going to be something. But the rest will be easier.
I even drew the HMIS thing and the NFPA diamond in Word, using Shapes, so that I can copy them to future MSDSs and just change the numbers.