Description

Pigment Red 48:1 is a high-performance, precipitated calcium salt azo pigment renowned for its excellent color strength and durability. This specific grade, also known as CAS NO 7585-41-3, is a critical component for achieving vibrant, long-lasting red shades in demanding industrial applications. It is primarily utilized by manufacturers in the plastics, coatings, and printing ink industries who require consistent, high-quality coloration with good heat and light stability.

Application

• Coloration of polyolefin plastics (e.g., LDPE, HDPE, PP) for consumer goods and packaging.
• Manufacturing of high-quality industrial and decorative paints and coatings.
• Formulation of printing inks, including for packaging and publications.
• Pigmentation of synthetic fibers and masterbatches.
• Coloring elastomers and rubber products.
• Used in the coloration of paper and paper coatings.

Basic Information

Product Name	Pigment Red 48:1
CAS No.	7585-41-3
Molecular Formula	C18H11CaClN2O6S
Molecular Weight	458.88 g/mol
Synonyms	Permanent Red 2B (Ca); Calcium 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; C.I. Pigment Red 48:1; C.I. 15865:1; Lithol Rubine 4581; Red 48:1 Calcium Lake; 2B Red Calcium Salt; Pigment Scarlet 2B
EINECS	231-494-8

Quality Control

Our Pigment Red 48:1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, particle size distribution, and chemical stability. A comprehensive Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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.

Specification

Item	Specification
Appearance	Red Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Moisture Content	≤ 2.0%
Water Soluble Matter	≤ 1.5%
Residue on Sieve (45μm)	≤ 0.5%
Heat Stability	≥ 180°C
Lightfastness	≥ 6-7 (ISO 105-B02)

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