This lnternational Standard specifies two methods for the measurement of the isocyanate content of aromatic isocyanates used as polyurethane raw materials. Method A is primarily applicable to refined toluene diisocyanate (TDI), methylene-bis-(4-phenylisocyanate) (MDI) and their prepolymers. Method B is applicable to refined, crude or modified isocyanates derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. It can also be used for isomer mixtures of toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. Other aromatic isocyanates may be analysed byThis method if precautions are taken to verify suitability. It is not applicable to blocked isocyanates.
EN ISO 14896:2009 history
2009EN ISO 14896:2009 Plastics - Polyurethane raw materials - Determination of isocyanate content (ISO 14896:2009)
2001EN ISO 14896:2001 Plastics - Polyurethane raw materials - Determination of isocyanate content ISO 14896: 2000; Supersedes EN ISO 9369: 1997