Anonymous Modernist 15556

Has anyone ordered from 1pmproducts on Amazon? They seem to mostly sell home chemicals, but they seem to be one of the better Amazon retailers for Sodium Citrate. I saw one mention of them on this forum, and they said that shipping was slow. Anyone have any other experiences? They seem to have positive reviews, and their Sodium Citrate is listed as USP/FCC, but it appears to be bulk sold. Basically I want to be sure it's legit and safe to eat. Thanks!