CAS 7789-02-8 appears in our catalog under these names: Chromium(III) nitrate nonahydrate, 98.5% , Chromium(III) nitrate nonahydrate, 99.99% min (metals basis . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 250g, 1kg, 5g, 100g.