Description

Cl 218872 is a specialized chemical compound identified by CAS No. 66548-69-4, serving as a key intermediate or functional material in advanced synthesis and formulation processes. Its value lies in providing consistent performance and purity, which are critical for ensuring the reliability and quality of downstream products. This product is essential for research and development laboratories, pharmaceutical manufacturers, and fine chemical producers seeking high-grade materials for their applications.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Organic Synthesis Reagent: Acts as a building block or catalyst in complex organic reactions for research and industrial production.
• Material Science Research: Employed in the development of novel polymers, coatings, or specialty materials.
• Agrochemical Development: Serves as a precursor in the formulation of advanced crop protection agents.
• Laboratory Chemical: Utilized as a standard or reagent in analytical and research laboratories.
• Fine Chemical Production: Integral to manufacturing processes for dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	Cl 218872
CAS No.	66548-69-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	1,3-Benzenedicarboxylic acid, 5-sulfo-, polymer with 4,4'-methylenebis[benzenamine] and formaldehyde, sodium salt; Phenolic sulfonate resin; Sulfonated phenol-formaldehyde resin; Condensation polymer of sulfonated benzene dicarboxylic acid, methylenedianiline and formaldehyde; Sodium salt of sulfonated aromatic polymer; Cl Acid Yellow 219; Cl 218872 (Colour Index); Reactive dye intermediate
EINECS	Contact for details

Quality Control

Our Cl 218872 is produced under a rigorous quality management system to ensure batch-to-batch consistency and high purity. Quality assurance includes comprehensive analytical testing, with specifications aligned with industry standards for fine chemicals and intermediates. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container sealed to protect from moisture and contamination.

Specification

Item	Specification
Appearance	Brown to dark brown powder or solid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals	< 20 ppm

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