Description

Calcium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate is a specialized organic salt primarily used as a key intermediate in the synthesis of dyes and pigments. Its disulphonate structure provides excellent water solubility and binding properties, making it valuable for creating colorants with specific performance characteristics. This compound is essential for manufacturers in the dye, textile, and specialty chemical industries seeking to produce vibrant and stable azo dyes and lake pigments.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial coupling component in the production of acid dyes and direct dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the synthesis of organic pigments and lake pigments, where it acts as a colorant base or complexing agent.
• Specialty Chemical Synthesis: Functions as a building block for more complex chemical structures in research and fine chemical production.
• Analytical Reagent: Potential use as a reagent or standard in analytical chemistry due to its distinct chromophoric properties.

Basic Information

Product Name	Calcium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate
CAS No.	83763-46-6
Molecular Formula	C10H6CaNNa2O8S2 (Typical salt form) / C10H8NO7S2 (Acid form)
Molecular Weight	Contact for details
Synonyms	2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid calcium salt; 6-Amino-4-hydroxynaphthalene-2,8-disulfonic acid calcium salt; Calcium 6-amino-4-hydroxy-2,8-naphthalenedisulfonate; 1,7-Cleve's acid calcium salt; Calcium 1,7-Cleve's acid; Azoic Coupling Component 13 calcium salt; C.I. 37525 calcium salt
EINECS	Contact for details

Quality Control

Our production of Calcium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate adheres to stringent quality management protocols. Each batch undergoes comprehensive analysis to ensure consistent purity, chemical identity, and performance as a dye intermediate. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals	Max. 20 ppm

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