Pigment Yellow 183
English Name: Pigment Yellow 183
Molecular Formula: C16H10CaCl2N4O7S2
Molecular Weight: 545.4
CAS Registry Number: 65212-77-3
EINECS Registry Number: 265-634-4
Physical and Chemical Properties
Classification: Monoazo Calcium Salt Lake
Appearance: Reddish-yellow powder
Hue: Reddish-yellow
Density: 1.95 g/cm3
Specific Gravity: 1.8 g/cm3
Volume: 3.7 L/kg
Specific Surface Area: 35.6 m2/g
Water Solubility: 79 mg/L at 20°C
pH Value (10% Slurry): 6
Product Characteristics: Pigment Yellow 183 is an ideal choice for high-performance reddish-yellow pigments in industries such as plastics and coatings, thanks to its excellent thermal stability, light and weather resistance, and outstanding migration resistance. It can replace traditional lead-containing pigments while meeting the demands of modern high-temperature processing.
Non-Warping: At 1/3 standard depth (SD) in high-density polyethylene (HDPE), it withstands temperatures up to 300°C without warping or deformation.
Dispersibility: Easily dispersible in various polymers, making the preparation process more efficient.
Environmental Performance: Free of heavy metals and DCB, it serves as a substitute for chrome yellow and diarylide yellow pigments.
Light Fastness: Grade 7, with a lightfastness rating of 7–8.
Heat Resistance: 280°C, suitable for coloring plastic products requiring high-temperature processing.
Weather Resistance: Grade 4, excellent weather resistance in full shade, ideal for outdoor applications.
Migration Resistance: Grade 5, excellent migration resistance in plasticized PVC and other polymer materials.
Acid Resistance: Grade 5
Alkali Resistance: Grade 5
Applications: Plastics, coatings, inks, blow molding, injection molding, fibers, films, PVC cable sheathing, etc.
Product Applications:
Pigment Yellow 183 is particularly suitable for plastic products requiring high-temperature processing and excellent weather resistance. It is widely used in the following materials and processes:
Plastics, coatings, paints, inks, blow molding, injection molding, fibers, films, PVC cable sheathing, etc. Its high thermal stability, non-warping properties, and environmental friendliness make it an eco-friendly alternative to traditional lead-containing pigments like chrome yellow. Especially in HDPE, it can be used at low concentrations while maintaining high thermal stability, making it suitable for light-color matching systems.