MSDS for products like that are only going to come from the manufacturer. They are required and they are monitored and if they are incorrect the manufacturer is not only likely to be sued, they will face multiple gov't sanctions.
MSDS for the components are likely to come from other sources.
Contrary to fictional TV shows, I have never run into someone with some nefarious plot to destroy mankind just because they work for a chemical company. Chemical companies, like nearly everyone else, are out to make money. Getting sued or even just a bad reputation, does not make them money.
I think I've posted this before, but I guess I'll do it again - my mini cv

BA - Cellular Biology, University of Colorado
MS - Toxicology, University of Arizona
PhD - Pharmacology/Toxicology, University of Arizona.
Major Employment
CIIT, now the Hamner Institute, where I primarily studied MTBE (The gasoline additive)
Pacific Northwest National Laboratories, where I study multiple environmental contaminants, especially pertaining to risk assessment and biologically based modeling of dosimetry at target sites of toxicity.
My current focus is on organophosphorous pesticides, but I also work with fumigants like methyl bromide (now that's toxic!)