C.I.Pigment No. Red 3 CAS 2425-85-6 C.I.No. 12120 Physical Properties Specific Gravity 1.34-1.52 Specific Surface area(m2/g) 8-25 pH 7.5 Melting point 258 Specification Color Shade Color Shade Similar to the standar Color Strength 97-103% of the standard Volatile matter at 105 1.0% Soluble matter in water 1.0% Oil absorption 35-50% Finess(100mesh) 5.0%max Fastness to Light 7 Heat 180 Bleeding resistance Water 5 Linseed Oil 4-5 Acid 3 Alkali 3 Alcohol 2 Xylene 5 Ethyl acetate 2
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CAS NO:2425-85-6

EC NO:219-372-2

Molecular Formula:C₁₇H₁₃N₃O₃

Molecular Weight:307.3034

Synonyms:;C.I. 12120;C.I. Pigment Red 3;1-(4-Methyl-2-nitrophenylazo)-2-naphthol;Pigment Red 3;1-[(4-methyl-2-nitrophenyl)hydrazono]naphthalen-2(1H)-one;(1Z)-1-[(4-methyl-2-nitrophenyl)hydrazono]naphthalen-2(1H)-one;

Molecular Structure: