Selling other company's stuff

I've been helping someone source a material that we use. He isn't a customer, but the material was hard to find. I found out who our vendor was and passed it along. What a nice guy I am.

So this engineer calls me back and asks if I have the MSDS (Material Safety Data Sheet) for this material. Turns out the supplier of this material 'only gives MSDS sheets to customers.'

How can he evaluate the material's suitability if he can't get an MSDS? How will he become a customer? So I'm the one who ends up making the sale for them. They don't deserve it. Maybe I should find him a different vendor, too!