... 05% max.0.10% max.Total Sulphur Dioxide (Formic Acid)0.10% max.0.15% max.Applications: 1) ... finish 2) Paper making industry: paper making, carbon paper 3) Medicine and chemical industry: glyoxalic acid, 2-methyl glyoxaline, imidazole ... , ethambutal, benzodiazine, hydroxyethyl cellulose 4) Dope industry: add the glyoxal ...