Molecular Formula                    C35H25N7Na2O10S2

 P.H. Value                               7.5

Density(g/cm3)                          1.2-1.5

Oil Absorption(ml/100g)             30-35

Light Fastness                            7

Heat Resistance                          160

Water Resistance                        5

Oil Resistance                            4

Acid Resistance                          5

Alkali Resistance                        5

We also supply direct red 31/ 239 /80 / 81/ 224/ 243/ 277/ 79/ 89