In article t,
Ralph Mowery wrote:

I wish the government would make the companies list everything the put
into the products. Not being able to hold back as far as a trade
secret. I don't care what percent, but do care about what is in it.

There are a whole lot of people who would scream "Government
over-reach!" for any such attempt. It would be seen as a serious blow
to research and innovation... in effect, you'd be forced to reveal the
result of your (possibly-expensive) research to all of your
competitors, in order to put any chemical product on the market.

From what I read in the documentation, the MSDS rules were tailored to
meet the needs for which they were designed... materials safety. Even
in the case of a trade secret, they require that the manufacturer
spell out the dangers, materials-handling rules, fire-fighting rules,
permissible exposure levels, and so forth. They also require that the
manufacturer disclose the actual chemical composition to medical
authorities in case of medical emergencies (although this can be under
terms of nondisclosure).

Wanting to know just what's in a spray, so you can tell how it may
affect any particular sort of materials? I don't blame you at all for
that, but it's not a safety issue... it's a product usability issue.
OSHA doesn't appear to consider this relevant to the rules for MSDS.

I think the conventional answer would probably be "That's an issue for
you and the product manufacturer to discuss, privately. If you don't
like their answer, don't buy their product."