The IUPAC name of Pigment Red 255 is 1,4-diphenyl-2,5-dihydropyrrolo[3,4-c]pyrrole-3,6-dione. With the CAS registry number 54660-00-3, it is also named as Pyrrolo(3,4-c)pyrrole-1,4-dione, 2,5-dihydro-3,6-diphenyl-. Classification Code about this chemical is TSCA Flag P [A commenced PMN (Premanufacture Notice) substance]. 120500-90-5 and 790240-37-8 are two other registry number about this chemical. It is red powder with excellent light, heat and solvent resistance. As its usage, Pigment Red 255 is mainly used in paints, plastics and paint coloring. And it is also used for coloring synthetic fibre stoste.

Following are the chemical properties about Pigment Red 255: (1)ACD/LogP: 3.58; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.58; (4)ACD/LogD (pH 7.4): 3.56; (5)ACD/BCF (pH 5.5): 308.14; (6)ACD/BCF (pH 7.4): 294.2; (7)ACD/KOC (pH 5.5): 2103.68; (8)ACD/KOC (pH 7.4): 2008.49; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Index of Refraction: 1.721; (13)Molar Refractivity: 81.6 cm³; (14)Molar Volume: 206.2 cm³; (15)Polarizability: 32.35×10^-24 cm³; (16)Surface Tension: 65.1 dyne/cm; (17)Enthalpy of Vaporization: 94.9 kJ/mol; (18)Vapour Pressure: 1.98E-16 mmHg at 25°C; (19)Rotatable Bond Count: 2; (20)Tautomer Count: 8; (21)Exact Mass: 288.089878; (22)MonoIsotopic Mass: 288.089878; (23)Topological Polar Surface Area: 58.2; (24)Heavy Atom Count: 22; (25)Complexity: 524.

This chemical can be described computed from structure:
1. SMILES:O=C2C=3/C(=C(/c1ccccc1)N2)/C(=O)NC=3c4ccccc4;
2. InChI: InChI=1/C18H12N2O2/c21-17-13-14(16(20-17)12-9-5-2-6-10-12)18(22)19-15(13)11-7-3-1-4-8-11/h1-10H,(H,19,22)(H,20,21).