Description

Alpha,Alpha,Alpha',Alpha'-Tetramethylxylene-Alpha,α-Diol CAS NO 27138-01-8 is a high-purity, symmetrical diol compound characterized by its four methyl groups on the aromatic ring, making it a valuable sterically hindered intermediate. This compound matters for its role as a key building block in the synthesis of specialty polymers, advanced resins, and fine chemicals, where its unique structure imparts specific physical and chemical properties. Industries such as polymer chemistry, advanced material science, and pharmaceutical research need this diol for developing products with enhanced thermal stability, controlled reactivity, and tailored performance characteristics.

Application

• Polymer Synthesis: Serves as a monomer or chain extender in the production of high-performance polyesters, polycarbonates, and polyurethanes, contributing to improved thermal and mechanical properties.
• Resin Modifier: Used as a cross-linking agent or hardening component in epoxy and other thermosetting resin systems for coatings, adhesives, and composites.
• Pharmaceutical Intermediate: Acts as a crucial precursor in the multi-step synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Liquid Crystal Materials: Employed in the synthesis of monomers for liquid crystal polymers (LCPs) and display materials due to its rigid, symmetrical structure.
• Specialty Plasticizers & Stabilizers: Functions as an intermediate for creating novel plasticizers and stabilizers that enhance polymer durability and performance.
• Fine Chemical & Agrochemical Synthesis: Utilized as a versatile building block for constructing complex molecular architectures in fine chemicals and agrochemicals.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new material science and organic chemistry applications.

Basic Information

Product Name	Alpha,Alpha,Alpha',Alpha'-Tetramethylxylene-Alpha,α-Diol
CAS No.	27138-01-8
Molecular Formula	C12H18O2
Molecular Weight	194.27 g/mol
Synonyms	2,5-Dimethyl-2,5-hexanediol; 2,5-Dihydroxy-2,5-dimethylhexane; Diacetone alcohol dimer; 2,5-Dimethylhexane-2,5-diol; DAD; Tetramethylbutanediol; TMBD; 2,5-Dimethyl-2,5-hexylene glycol
EINECS	248-254-6

Quality Control

Our Alpha,Alpha,Alpha',Alpha'-Tetramethylxylene-Alpha,α-Diol is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting these results are available for every shipment. We adhere to relevant industry standards and can support compliance requirements for various 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	108 - 112 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 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.