Description

Pigment Red 57:1 is a high-performance, calcium-based monoazo pigment renowned for its clean, bluish-red shade and excellent color strength. This pigment is a critical component for achieving vibrant, durable, and cost-effective coloration in a wide range of industrial applications. It is an essential raw material for manufacturers in the printing, plastics, and coatings industries who require consistent quality and reliable supply for their production processes.

Application

Pigment Red 57:1 is a versatile colorant with primary uses in:

• Printing Inks: The dominant application, especially for high-quality offset, gravure, and flexographic inks, where it provides the standard magenta for process color printing (CMYK).
• Plastics Coloring: Used for the mass coloration of polyolefins (PP, PE), PVC, and other polymers, offering good dispersion and heat stability.
• Industrial Coatings: Imparts bright red shades in emulsion paints, industrial finishes, and decorative coatings.
• Paper Coatings: Employed in the surface coloring and coating of high-grade papers and board.
• Textile Printing: Used in pigment printing pastes for fabrics.
• Specialty Applications: Suitable for coloring artists' colors, chalks, and other specialty products.

Basic Information

Product Name	Pigment Red 57:1
CAS No.	5281-04-9
Molecular Formula	C18H12CaN4O6S2
Molecular Weight	476.50 g/mol
Synonyms	Lithol® Rubine B Ca; C.I. Pigment Red 57:1; Calcium 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; Permanent Carmine FBB; Pigment Red 57:1 Calcium Salt; Rubine Toner; 2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, calcium salt (1:1); C.I. 15850:1
EINECS	226-109-5

Quality Control

Our production of Pigment Red 57:1 adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, hue, particle size distribution, and rheological properties. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of ignition. For long-term storage, ensure the original packaging remains sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Red Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Standard
Moisture Content	≤ 2.0%
Water Soluble Matter	≤ 1.5%
Residue on Sieve (63 µm)	≤ 0.1%
pH Value (10% Aqueous Slurry)	6.0 - 8.0
Oil Absorption	40 - 60 g/100g
Lightfastness (1-8)	≥ 6
Heat Resistance	≥ 180°C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.