We are Qinhuangdao Nordson Chemical Co., ltd. based in Qinhuangdao , China. We are member of Tradekey.com since January, 2012. Our business is related to Chemicals industry and we specifically deal in chemicals. Please find our product details below: Sulphur Black Molecular Formula: C6H4N2O5 M. W.: 184.10636 Uses: Mainly used dyeing on cotton, also used dyeing on cambric, viscose and vinylon. Indigo blue Indigo Blue (granular) CAS Number: 482-89-3 H. S. CODE: 3204.1510 Molecular formula: C16H10N2O2 Molecular Weight: 262.62 Index No.: C. 1 vat blue 1 Appearance: Dark blue even granular Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.