Description

Ci 15511 is a high-purity synthetic organic pigment, also known by its CAS number 131-28-2. This compound is valued for its excellent color strength, stability, and consistency, making it a critical component for achieving precise and durable coloration in demanding industrial applications. It is primarily utilized by manufacturers in the coatings, plastics, and specialty inks industries who require reliable, high-performance pigments for their formulations.

Application

• Industrial Coatings & Paints: Used in automotive, architectural, and industrial maintenance paints for its weather resistance and color fidelity.
• Plastics & Polymer Coloring: Imparts stable and vibrant color to a wide range of thermoplastic and thermoset polymers during masterbatch or compound production.
• Specialty Printing Inks: A key pigment for high-quality packaging, security, and decorative inks requiring excellent printability and lightfastness.
• Textile Pigment Printing: Employed in pigment printing pastes for coloring fabrics, offering good wash and rub fastness.
• Artists' Colors: Used in the formulation of professional-grade artists' paints, oils, and acrylics.
• Colored Filters & Optical Materials: Suitable for applications requiring specific light absorption properties.

Basic Information

Product Name	Ci 15511
CAS No.	131-28-2
Molecular Formula	C24H27N5O8S2.2Na
Molecular Weight	631.61 g/mol
Synonyms	Pigment Red 184; C.I. Pigment Red 184; C.I. 15511; Food Red 9; Acid Red 184; FD&C Red No. 40 Aluminum Lake (related complex); Allura Red AC Aluminum Lake; 6-Hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonic acid, disodium salt; Disodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalenesulfonate
EINECS	205-027-1

Quality Control

Our Ci 15511 is produced under a strict quality management system. Every batch is tested to ensure it meets stringent specifications for color value, purity, and physical properties relevant to industrial applications. While not typically a pharmaceutical-grade material, production can adhere to principles of current Good Manufacturing Practice (cGMP) for consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, heavy metal content, and specific identification.

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 such as strong oxidizing agents. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Std.)
Moisture Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Water Solubility	≤ 1.0%
pH (10% slurry)	6.0 - 8.0

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