Description

1-Amino-8-Naphthol-2,4-Disulfonic Acid Monosodium Salt is a key aromatic sulfonic acid derivative and an important intermediate in the synthesis of dyes and pigments. Its value lies in its functional groups, which allow for the creation of complex, water-soluble colorants with specific hue and fastness properties. This compound is essential for manufacturers in the dye and pigment industry, particularly for producing acid dyes, reactive dyes, and food colorants, where precise chemical structure dictates final product performance.

Application

• Primary Intermediate for Dye Synthesis: A crucial building block for manufacturing azo dyes, acid dyes, and reactive dyes, imparting solubility and color characteristics.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, plastics, and coatings.
• Food Colorant Precursor: Serves as an intermediate in the synthesis of certain certified food dyes (where final product meets regulatory purity standards).
• Laboratory Reagent: Employed in chemical research and development for synthesizing novel chromophores and studying sulfonation chemistry.
• Textile Dyeing Auxiliary: Can function as a coupling component in dye formulations for nylon, wool, and silk.
• Photographic Chemical: Used in some specialized photographic developers and color processes.

Basic Information

Item	Detail
Product Name	1-Amino-8-Naphthol-2,4-Disulfonic Acid Monosodium Salt
CAS No.	52789-62-5
Molecular Formula	C10H8NNaO7S2
Molecular Weight	349.29 g/mol
Synonyms	1-Amino-8-naphthol-2,4-disulfonic acid sodium salt; 8-Amino-1-naphthol-5,7-disulfonic acid monosodium salt; 1,8-Aminonaphtholdisulfonic acid sodium salt; 5,7-Disulfo-8-amino-1-naphthol monosodium salt; 8-Amino-1-hydroxy-5,7-naphthalenedisulfonic acid monosodium salt; Chicago Acid monosodium salt; K Acid monosodium salt; 1-Amino-8-hydroxy-2,4-naphthalenedisulfonic acid monosodium salt
EINECS	Contact for details

Quality Control

Our 1-Amino-8-Naphthol-2,4-Disulfonic Acid Monosodium Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition, suitable for industrial synthesis. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee consistent quality and traceability.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality.

Specification

Item	Specification
Appearance	Off-white to grayish powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Contact for details

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