CAS 7632-00-0 appears in our catalog under these names: Sodium nitrite, 99.999% (metals basis) , Sodium nitrite, ACS, 97% min , Sodium nitrite, 98% , Sodium nitrite, 0.1M Standardized Solution . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 500g, 1000g, 5000g, 500ml.