Description

9,9'-Spirobi[Fluorene]-2,2',7,7'-Tetracarboxylic Acid is a high-purity, multifunctional aromatic carboxylic acid derivative, serving as a critical advanced intermediate in the synthesis of sophisticated organic materials. Its rigid, three-dimensional spirobi[fluorene] core provides exceptional thermal stability and structural control, making it invaluable for developing high-performance polymers and electronic components. This compound is essential for R&D and production teams in the organic electronics, specialty polymer, and pharmaceutical intermediates sectors seeking to enhance material properties.

Application

• Organic Light-Emitting Diode (OLED) Materials: A key precursor for electron-transport layers (ETLs) and host materials in high-efficiency display and lighting technologies.
• Polyimide and Polyamide Synthesis: Used to manufacture high-temperature, high-strength engineering plastics for aerospace, automotive, and flexible electronics applications.
• Pharmaceutical Intermediates: Serves as a complex building block for active pharmaceutical ingredients (APIs) requiring rigid, multi-functional aromatic structures.
• Metal-Organic Frameworks (MOFs): Acts as a versatile organic linker for constructing porous materials with tailored properties for gas storage, separation, and catalysis.
• Liquid Crystal Polymers (LCPs): Imparts high thermal stability and mechanical strength to polymers used in advanced connectors and miniaturized electronic components.
• Crosslinking Agents: Utilized in epoxy and other resin systems to create densely cross-linked networks with improved thermal and chemical resistance.

Basic Information

Product Name	9,9'-Spirobi[Fluorene]-2,2',7,7'-Tetracarboxylic Acid
CAS No.	171408-78-9
Molecular Formula	C33H16O8
Molecular Weight	540.48 g/mol
Synonyms	2,2',7,7'-Spirobi[9H-fluorene]-9,9'-diylbis(1,3-dioxo-1,3-dihydro-2-benzofuran-5-carboxylic acid); 9,9'-Spirobifluorene-2,2',7,7'-tetracarboxylic dianhydride precursor; SFTA; SBF-TA; 2,2',7,7'-Tetracarboxyspirobi[9H-fluorene]; 9,9'-Spirobi(9H-fluorene)-2,2',7,7'-tetracarboxylic Acid
EINECS	Contact for details

Quality Control

Our 9,9'-Spirobi[Fluorene]-2,2',7,7'-Tetracarboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and high industry standards. Certificates of Analysis (COA) detailing all critical parameters are provided with every shipment to guarantee traceability and batch-to-batch consistency for your advanced applications.

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 performance. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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