... and high in quality.Index item Qualified gradeExcellent gradeformic acid , %≥ 85 90acetic acid,% 0.6 0.4Chroma (as platinum and cobalt) ,%≤ ... 1010Dilution experiment (acid+water=1+3)clearclearChloride (as CL),%≤0.0050.003Sulfate (as ... and reducible. Quality standard: GB/T2093-93 Applications: Formic acid is a kind of basic material in organic chemicals. It ...