that is ADA, I had some and when it sits it's not as dark. I would say it is fine to use but if your setting up a shrimp tank I would let it cycle for atleast 2 months before adding shrimp...
especially CRS if their cherries 3 weeks, and make sure you do heavy water changes when you first add it in.
After adding the substrate, on the 3rd day do 80% WC, 6th day 50%, 12th day 30% then continue weekly. I also forgot 1 thing adding a seeded filter and used tank water can speed up the cycling process....