Description

4,4''-Isopropylidenedicatechol is a high-purity bisphenol derivative, also known as 4,4'-Dihydroxy-3,3',5,5'-tetramethylbiphenyl. This compound serves as a critical building block and intermediate in advanced organic synthesis, valued for its symmetrical phenolic structure and stability. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for developing high-performance materials and active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Polymer & Resin Modifier: Acts as a monomer or cross-linking agent in the manufacture of high-temperature resistant and specialty engineering plastics.
• Liquid Crystal Materials: Serves as a core component in the synthesis of monomers for liquid crystal displays (LCDs).
• Antioxidant & Stabilizer Precursor: A starting material for synthesizing phenolic antioxidants used in plastics and fuels.
• Research & Development: Essential for academic and industrial R&D in organic chemistry and material science.

Basic Information

Product Name	4,4''-Isopropylidenedicatechol
CAS No.	18811-78-4
Molecular Formula	C17H20O2
Molecular Weight	256.34 g/mol
Synonyms	4,4'-Dihydroxy-3,3',5,5'-tetramethylbiphenyl; 3,3',5,5'-Tetramethyl-4,4'-biphenol; 4,4'-Biphenol, 3,3',5,5'-tetramethyl-; Bisphenol TM; TM-BP; NSC 403796; 3,3',5,5'-Tetramethyl-[1,1'-biphenyl]-4,4'-diol
EINECS	Contact for details

Quality Control

Our 4,4''-Isopropylidenedicatechol is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	215 - 220 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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