CAS 7440-44-0 appears in our catalog under these names: Carbon, 0%, CARBON, MICROLEAF, 25X70MM, THINNESS 0&, CARBON, MICROLEAF, 25X70MM, THINNESS 0, Total Organic Carbon Standard: TOC @ 100 mg/L in H2O, Total Organic Carbon Standard: TOC @ 1000 mg/L in H2O. Offered by: MedChemExpress, Sigma-Aldrich, VHG, Chemat, Thermo Scientific (Alfa Aesar). Available pack sizes: 10 g, 25 g, 1EA, 5EA, 500ml, 100ml, 1kg, 250g.