Pigment Red 3

Brand	Fineland Chem
Color Index	Pigment Red 3
Color Index No	12120
CAS No	2425-85-6
EC No	219-372-2
Chemical Group	Mono Azo
Chemical Formula	C₁₇H₁₃N₃O₃

Introduction

Pigment Red 3 (PR3) also widely known as Toluidine Red, is a high-yield variety.It is a synthetic organic pigment belonging to the monoazo chemical class. In terms of appearance, formulations with large particle size exhibit a blue-tinged red color; in alkyd resins, as drying time increases, their gloss decreases and haze forms. Formulations with small particle size, however, show a yellow-tinged red color, with no obvious haze. Its light fastness is Grade 7, and the light fastness of its tinted color (1:4 titanium dioxide) is Grade 4. For applications, it is mainly used in air-drying paints and rigid polyvinyl chloride (PVC), rarely in printing inks.

Best Sellings

PR3 – DuraPaint®6503H ⬇️TDS

This red pigment exhibits a yellowish shade, high opacity, and typical weather resistance.

Physical Properties

Test Item	Specification
Density (g/cm3 )	1.34-1.52
Specific Surface Area(m2/g)	8-25
Oil Absorption(g/100g)	35-50
PH Value	5-8
Moisture Content (%)	≤2
Total impurities(ppm)	≤600

Fastness Properties

Heat Resistance (℃)	160	Alkali Resistance (1-5)	5
Light Resistance (Full Shade, 1-8)	5-6	Migration Resistance(1-5)	4
Light (Reduced tinting, 1-8)	5	Ethyl Acetate (1-5)	3
Weather Resistance (1-5)	3-4	Ethanol (1-5)	3
Acid Resistance (1-5)	5	MEK (1-5)	2-3

Application

Printing Ink: Discover high-performance ink pigments for various printing technologies including water-based, solvent-based, offset, inkjet, UV curing, and decorative applications. More Details

Paint and Coating: Explore a wide range of coating pigments tailored for paints, oils, automotive finishes, industrial applications, concrete, cement, and ceramics. More Details

Plastic and Masterbatch: Browse a comprehensive selection of plastic pigments designed for PE, PVC, EVA, rubber, and a variety of engineering plastics. More Details

Special Use: Find specialized pigments offering unique effects and functionalities for textiles, resins, glazes, metallic finishes, fluorescence, and anti-corrosion needs. More Details

Advantages

Production and Supply Chain Advantage：Known as Toluidine Red, it is a pigment variety with large output. Its supply chain is more stable, which can meet large-scale demand.
Appearance Differentiation and Adaptation Advantage：It can provide different appearance formulations according to needs—those with large particle size show blue-tinged red, and those with small particle size show yellow-tinged red, flexibly matching diverse color requirements.
Basic Fastness Performance Advantage：Its light fastness reaches Grade 7, with good basic color fastness performance, which can ensure color stability in conventional application scenarios.
Core Application Accurate Adaptation Advantage：It is mainly suitable for the fields of air-drying paints and rigid PVC, with strong application pertinence, which can better exert pigment performance. It is rarely used in printing inks, avoiding performance waste in non-adaptable scenarios.
Abundant Market Choice Advantage：A wide range of commercial grades have been launched in the market. They can accurately match the purchasing preferences of different customers, be highly adaptable to diverse application scenarios, and fully meet the performance requirements in various segmented fields, providing customers with flexible product selection options.

Synonyms

PR3	Pigment Scarlet	Hansa Red B	Flexiverse Red 3
Anthraquinone-1,2-diol	Alizarin Red S	Kenalake Scarlet RB	Monolite Scarlet RN
Basoflex Red 3750	adctoluidineredb	DCC 2254 Toluidine Red	Aurasperse ⅡW-3073
Covanor Red W3603	C.I. Pigment Red 3	C.P.Toluidine Toner A-2989	C.P.Toluidine Toner A-2990
C.I.PigmentRed3(12120)	1,2-Dihydroxyanthraquinone	C.P.Toluidine Toner Dark RS-3340	1,2-Dihydroxy-9,10-anthraquinone
((4-Methyl-2-nitrophenyl)azo)-2-naphthol	1-((2-nitro-4-methylphenyl)azo)-2-naphthol