Pigment Red 176-Corimax Red HF3C

Product parameter list

Color Index No.Pigment Red 176
Product nameCorimax Red HF3C
Product categoryOrganic Pigment
CAS Number12225-06-8
EU Number235-425-2
Chemical FamilyBenzimidazolone
Molecular Weight572.57
Molecular FormulaC32H24N6O5
P.H. Value7
Oil Absorption(ml/100g)%40-60
Light Fastness(coating)6
Heat Resistance(coating)180
Light Fastness(plastic)6-7
Heat Resistance(plastic)250
Water Resistance5
Oil Resistance5
Acid Resistance5
Alkali Resistance4-5
Hue distribution


Pigment Red 176 is a brilliant bluish shade high performance pigment, with excellent fastness, high heat resistance, transparent and migration resistance.

TDS(Pigment Red 176) MSDS(Pigment Red 176)


Recommended for industrial paints, powder coatings, printing pastes, PVC, rubber, PS, PP, PE, PU, water based inks, solvent inks, UV inks.
Suggested for automotive paints, architectural coatings, coil coatings, offset inks.

Molecular Structure:

Physical and chemical properties: blue and red. Lightfastness is level 6. Thermal stability is above 300 ℃. Organic solvent resistance reaches 4 to 5 grades, without migration.
Product use: Mainly used for coloring plastics.

Pigment Red 176 Specification:
The 2-Naphthalenecarboxamide,N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[2-[2-methoxy-5-[(phenylamino)carbonyl]phenyl]diazenyl]- is an organic compound with the formula C32H24N6O5. The systematic name of this chemical is 3-hydroxy-4-[2-methoxy-5-(phenylcarbamoyl)phenyl]azo-N-(2-oxo-1,3-dihydrobenzimidazol-5-yl)naphthalene-2-carboxamide. With the CAS registry number 12225-06-8, it is also named as N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]naphthalene-2-carboxamide. The product's category is Organics.

Physical properties about 2-Naphthalenecarboxamide,N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[2-[2-methoxy-5-[(phenylamino)carbonyl]phenyl]diazenyl]- are: (1)ACD/LogP: 6.96; (2)# of Rule of 5 Violations: 4; (3)ACD/LogD (pH 5.5): 6.95; (4)ACD/LogD (pH 7.4): 6.95; (5)#H bond acceptors: 11; (6)#H bond donors: 5; (7)#Freely Rotating Bonds: 8; (8)Polar Surface Area: 153.51 Å2; (9)Index of Refraction: 1.721; (10)Molar Refractivity: 157.67 cm3; (11)Molar Volume: 398.6 cm3; (12)Polarizability: 62.5×10-24cm3; (13)Surface Tension: 61 dyne/cm; (14)Density: 1.43 g/cm3; (15)Flash Point: 357.3 °C; (16)Enthalpy of Vaporization: 101.63 kJ/mol; (17)Boiling Point: 667.2 °C at 760 mmHg; (18)Vapour Pressure: 2.05E-18 mmHg at 25°C.