... ,000 Tons.Spec.According to the Standard of GB9009-1998Formaldehyde Content, %36.50~37.4Acidity (Formicacid), %≤0.05Chromaticity,Hazen≤10Density (p ... 20), g/Cm31.075~1.114Fe3+ Content, %≤0.001Methanol Content, %According to the Request formaldehyde 37%