gum rosin

  post date: jan 06,2022   expiry date: jul 05,2022   detailed description: cas no. :8050-09-7   cas registry number: 8050-09-7   synonyms: ;disproportionated rosin;colophony;pine rosin;rosin;rosin solder flux fume;wood rosin;(4ar)-7-isopropyl-1,4a-dimethyl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid;   molecular formula: c20h30o2   molecular weight: 302.451   molecular structure: