Urea formaldehyde concentrate (UF 80) / (UF85) UNNO. 2209 IMDG code (page no): 8176-1 IMCO class: 8 It is an intermediate chemical used for many other derivatives based on urea formaldehyde solution. Its long storage time, high solid content, proper fluidity, low water content and clearness make it an excellent intermediate compound for chemical / industrial purposes.