Description

5,5',6,6'-Tetrahydroxy-3,3,3',3'-Tetramethyl-1,1'-Spirobisindane is a high-purity, multifunctional organic intermediate characterized by its rigid spirocyclic structure. This compound is valued for its role as a key building block in the synthesis of advanced materials and specialty chemicals, offering exceptional thermal and chemical stability. It is primarily sought by manufacturers in the polymer, pharmaceutical, and electronics industries for developing high-performance products.

Application

• Polymer Synthesis: Serves as a crucial monomer for producing high-performance polyimides, polycarbonates, and epoxy resins with enhanced thermal stability and mechanical properties.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs) where its rigid scaffold is beneficial.
• Advanced Material Production: A key precursor for liquid crystal polymers (LCPs), optical materials, and gas separation membranes.
• Electronics & Semiconductor Industry: Employed in the manufacture of photoresists, dielectric materials, and other components for microelectronics.
• Cross-linking Agent: Functions as an effective cross-linker in coatings, adhesives, and composite materials to improve durability.
• Research & Development: Utilized in academic and industrial R&D for exploring novel organic frameworks and supramolecular chemistry.

Basic Information

Product Name	5,5',6,6'-Tetrahydroxy-3,3,3',3'-Tetramethyl-1,1'-Spirobisindane
CAS No.	77-08-7
Molecular Formula	C21H24O4
Molecular Weight	340.41 g/mol
Synonyms	Spirobisindane-5,5',6,6'-tetrol, Tetramethyl Derivative; TTSBI; 1,1'-Spirobi[3H,3'H-indene]-5,5',6,6'-tetrol, 3,3,3',3'-tetramethyl-; 3,3,3',3'-Tetramethyl-1,1'-spirobi[3H-indene]-5,5',6,6'-tetrol; Tetrahydroxytetramethylspirobisindane; Spirobisindane Tetrol
EINECS	Contact for details

Quality Control

Our 5,5',6,6'-Tetrahydroxy-3,3,3',3'-Tetramethyl-1,1'-Spirobisindane is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and FT-IR, to ensure high purity and batch-to-batch consistency suitable for demanding industrial and research applications. A detailed Certificate of Analysis (COA) is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store in a cool, dry place at a controlled room temperature (15-25°C). For long-term storage, consider using a desiccator or an inert atmosphere to maintain product integrity.

Specification

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

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