Description

Brilliant Lake Red R is a synthetic organic pigment belonging to the azo chemical class, identified by CAS No. 5858-77-5. It is valued for its vibrant, durable red hue and excellent color strength, making it a critical component for achieving consistent and reliable coloration. This pigment is primarily needed by manufacturers in the plastics, coatings, inks, and textile industries seeking high-performance colorants for their products.

Application

• Primary colorant for the mass coloration of plastics, including polyolefins (PP, PE), PVC, and engineering resins.
• Manufacturing of high-quality industrial and decorative paints and coatings, offering good lightfastness and weather resistance.
• Production of printing inks for packaging, publications, and specialty applications.
• Dyeing and pigment printing of synthetic textile fibers and fabrics.
• Coloration of masterbatches and color concentrates for simplified downstream plastic processing.
• Manufacturing of colored rubber and elastomeric products.
• Pigment for artists' colors and other specialty artistic mediums.
• Potential use as a colorant in the formulation of cosmetics and personal care items where regulations permit.

Basic Information

Product Name	Brilliant Lake Red R
CAS No.	5858-77-5
Molecular Formula	C24H20N4O4S2·1/2 Ba
Molecular Weight	626.99 g/mol (as barium salt)
Synonyms	Pigment Red 53:1; C.I. 15585:1; Barium Lithol Red; Lake Red C; Brilliant Lake Red; Red Lake C; Permanent Red R; Lithol Rubine Barium Lake; Red No. 202 (Japan); 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-, barium salt (1:1)
EINECS	227-493-3

Quality Control

Our Brilliant Lake Red R is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, hue, particle size distribution, and chemical purity. Certificates of Analysis (COA) detailing 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 strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 30.0%
Water Soluble Matter	≤ 1.5%
Particle Size (D50)	0.2 - 0.5 μm
Lightfastness	≥ 6-7 (ISO 105-B02)
Heat Resistance	≥ 200°C

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