I was told that Plastic Cement is the same as Portland Cement. Thoughts?

Q: I picked up the materials for the high temp mortar mix and they give me plastic cement instead of Portland cement. Can I use this or should I take it back and get Portland cement.

A: Wow! Way Wrong Stuff!

Had to look that stuff up – It’s for making Stucco.

Yes – plz take it back and get Portland Cement.

It’s very, very, very common – every HD / Lowes in America sells it.