Description

1,3-Dioxo-1H,3H-Naphtho[1,8-Cd]Pyran-6-Sulphonic Acid is a specialized organic intermediate featuring a fused naphthopyran ring system functionalized with sulfonic acid and carbonyl groups. This unique molecular architecture makes it a valuable precursor for synthesizing high-performance dyes, pigments, and functional materials. It is primarily sought by manufacturers in the fine chemical, advanced material, and specialty dye industries for research and production applications.

Application

• Dye & Pigment Intermediate: A key building block for the synthesis of high-value, complex dyes and organic pigments, particularly those requiring sulfonated structures for solubility or specific color properties.
• Functional Material Synthesis: Used in the research and development of advanced organic materials, such as optical brighteners, fluorescent markers, and charge-transport materials.
• Pharmaceutical Intermediate: Serves as a sophisticated precursor in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents that incorporate polycyclic aromatic systems.
• Chemical Research & Development: Employed as a model compound or starting material in organic synthesis for exploring new reactions and creating novel molecular architectures.
• Specialty Surfactant Precursor: The sulfonic acid group allows for potential derivatization into specialized surfactants or dispersants for niche industrial applications.

Basic Information

Product Name	1,3-Dioxo-1H,3H-Naphtho[1,8-Cd]Pyran-6-Sulphonic Acid
CAS No.	52083-12-2
Molecular Formula	C₁₃H₆O₆S
Molecular Weight	290.25 g/mol
Synonyms	Naphtho[1,8-cd]pyran-6-sulfonic acid, 1,3-dihydro-1,3-dioxo-; 1,3-Dioxo-1,3-dihydronaphtho[1,8-cd]pyran-6-sulfonic acid; 6-Sulfo-1H,3H-naphtho[1,8-cd]pyran-1,3-dione; Naphtho[1,8-cd]pyran-1,3-dione-6-sulfonic acid; 1,3-Dioxo-1H,3H-benzo[de]isochromene-6-sulfonic acid; 6-Sulfonaphtho[1,8-cd]pyran-1,3-dione; Contact for additional trade names and abbreviations.
EINECS	Contact for details

Quality Control

Our production of 1,3-Dioxo-1H,3H-Naphtho[1,8-Cd]Pyran-6-Sulphonic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and reliable performance in your processes. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key specifications.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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