... 0Toluene Discolouration, %D161880-Heat Loss, %D1509-2.0Tint Strength vs IRB 3#D326598.0108.0Ash, %D1506-0.8325# Sieve Residue ... %D1508-5.0Fines 20 min, %D1508-8.0300% Modulus, vs IRB6 MpaD4120.142.90Carbon Black - Grade N550PropertyASTMMINMAXIodine No. mg/gD151038 ... %D1508-8.0Fines 20 min, %D1508-12.0300% Modulus, vs IRB6 MpaD4120.303.10Carbon Black - Grade N660PropertyASTMMINMAXIodine No. mg/gD151031 ...