Description

1-Naphthol Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of dyes, pigments, and specialty chemicals. Its sulfonic acid group imparts excellent water solubility and reactivity, making it crucial for creating colorants and functional materials with specific properties. This compound is essential for manufacturers in the dye and pigment, agrochemical, and pharmaceutical intermediate industries seeking reliable and high-purity raw materials.

Application

• Dye and Pigment Intermediate: A critical building block for the synthesis of azo dyes, acid dyes, and other colorants, particularly where water solubility is required.
• Agrochemical Synthesis: Used in the manufacture of certain herbicides, pesticides, and plant growth regulators as a functional intermediate.
• Pharmaceutical Intermediates: Employed in the production of specific active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Serves as a reagent and starting material in organic synthesis for novel compound libraries.
• Surfactant and Detergent Industry: Can be utilized to produce specialized surfactants due to its aromatic sulfonate structure.
• Photographic Chemicals: Acts as a component in the formulation of certain photographic developers and chemicals.

Basic Information

Product Name	1-Naphthol Sulfonic Acid
CAS No.	29036-17-7
Molecular Formula	C₁₀H₈O₄S
Molecular Weight	224.23 g/mol
Synonyms	1-Naphthalenesulfonic acid, 4-hydroxy-; 4-Hydroxy-1-naphthalenesulfonic acid; 1-Hydroxy-4-naphthalenesulfonic acid; 4-Hydroxynaphthalene-1-sulfonic acid; Naphthol-4-sulfonic acid; 1-Naphthol-4-sulfonic acid; 4-Sulfo-1-naphthol; NSC 403697
EINECS	Contact for details

Quality Control

Our 1-Naphthol Sulfonic Acid is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light tan powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%

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