the Certificate Of Analsis of Toluene Diisocyanate 99.7% Item Toluene Diisocynate Toluene Diisocynate Appearance Colorless liauid Colorless to pale yellow liquid Purity 99.7 min 99.8 2,4-isomer 80±1 80.8 2,6-isomer 20±1 19.2 Acidity 0.0015 max 0.0012 Hydrolyzable Chloride 0.004 max 0.001 Total Chloride 0.0018 max 0.0018 Color ( APHA ) 15 max 10 Conclusion qualified