... Europe, with an annual output of 360,000 Tons formaldehyde 37,36.5%~37.4%, CAS No.: 50-00-0. Our equipment & technology ... .According to the Standard of GB9009-1998Formaldehyde Content, %36.50~37.4Acidity (Formicacid), %≤0.05Chromaticity,Hazen≤10Density (p 20), g/Cm31 ... ~1.114Fe3+ Content, %≤0.001Methanol Content, %According to the Request formaldehyde 37%