... of 640,000 Tons formalin,36.5%~37.4%, CAS No.: 50-00-0. Our equipment & technology are introduced form Europe ... Content, %36.50~37.4Acidity (Formicacid), %≤0.05Chromaticity,Hazen≤10Density (p 20), g/Cm31.075~1.114Fe3+ Content, %≤0.001Methanol Content ...