CAS 7719-12-2 appears in our catalog under these names: Phosphorus trichloride, 99%, PHOSPHORUS TRICHLORIDE, REAGENTPLUS, 99%, PHOSPHORUS TRICHLORIDE, 99.999%. Offered by: Thermo Scientific (Acros), Sigma-Aldrich. Available pack sizes: 250g, 1KG, 5g, 50G, 25G.