Lithol rubine red (CAS# 5281-04-9)

Introduction

Red 57:1 is an organic pigment that is also known as a common red pigment. The following is an introduction to some of the properties, uses, preparation methods and safety information of red 57:1:- Properties:- The chemical name of red 57:1 is azo dye PR57:1, which belongs to the azo dye family. - It is a vivid red pigment with good pigment transparency and strength. - Its chemical structure makes it resistant to light, heat, and chemicals. - Red 57:1 has good solubility in organic solvents, but low solubility in water. Uses:- Red 57:1 is mainly used as a colorant in the fields of coatings, inks, plastics, fibers and rubber. - It is widely used in printing inks, especially in packaging printing, to provide a vivid red color. - Red 57:1 is also used in the field of art for painting and dyeing fabrics. Method:- The preparation of red 57:1 usually involves the synthesis of azo dye compounds. - The synthesis process involves the selection of appropriate aromatic amines and aromatic thioneones as raw materials, through oxidation, coupling, and other reaction steps to form the red 57:1 pigment. Safety Information:- Red 57:1 is considered relatively safe under general conditions of use. - As a chemical, it still requires proper care and handling. - Avoid inhaling red 57:1 dust or solution and avoid contact with skin and eyes. - When in use, follow the relevant safety handling guidelines and personal protective measures.

Application
Lithol Rubine Red (Pigment Red 57:1, CAS 5281-04-9), a monoazo calcium lake, delivers a brilliant bluish-red shade with high tinting strength and good opacity. It is widely used in offset, publication gravure, water-based flexographic, and UV-curable inks as the standard magenta in CMYK process printing. In industrial and decorative paints, it exhibits good weatherability and resistance to water, oil, acids, and alkalis. It is also suitable for coloring PVC, PP, PS, ABS, and EVA rubber in masterbatch and injection molding applications. With heat resistance up to 170°C and lightfastness rated 5 (8=excellent), this versatile pigment ensures stable color performance in printing inks, coatings, plastics, and textile printing. Xinchem offers custom synthesis, custom chemical synthesis, and contract manufacturing of high-purity PR57:1 with flexible scaling from R&D to commercial tons. Contact us for a competitive quote.