Pigment

What is “Pigment Red 53:1” ?

Pigment Red 53:1 (also known as Golden Light Red C) is an azo lake organic pigment that appears as a yellow light red powder at room temperature. It has a bright color and good sun and heat resistance. ‌
Its molecular formula is C34H24BaCl2N4O8S2, with a molecular weight of approximately 888.94. It has strong coloring power and excellent solvent resistance, but is sensitive to acidity and alkalinity. ‌

What are main use of “Pigment Red 53:1” ?

Widely applicable in various fields, including:
Ink: Suitable for offset printing ink, flexographic ink (including water-based ink), commonly used in newspaper printing and food packaging due to its high coloring strength and easy dispersibility.
Plastic and rubber: can be used for plastic products such as PVC, HDPE, PP, as well as rubber products such as bicycle inner tubes and soles, with heat resistance up to 250-260 ° C and good migration resistance.
Coatings and educational supplies: Suitable for powder coatings, paints, and educational supplies (such as crayons and toys), but with limited light fastness and easy fading after long-term outdoor use, it is more suitable for indoor or short-term exposure scenarios.
Other uses: including electrostatic copier toner and paint paste. ‌

What are the latest research and discoveries about “Pigment Red 53:1”?

In terms of the latest research and findings, as of December 2025, there have been no publicly available reports of groundbreaking new studies on pigment red 53:1. The existing information mainly focuses on its performance optimization and application expansion, such as:
Improve dispersibility and enhance stability in inks and plastics through polymer dispersants such as Solsperse 24000.
Applied in precision injection molding, it has a low molding shrinkage rate (≤ 1.5%) and good compatibility with plastic substrates.
The chemical resistance test shows that its acid resistance (5% HCl) and alkali resistance (5% NaOH) are moderate, and its solvent resistance is excellent.