Description

2,2,4,4-Tetramethyl-1,3-Cyclobutanediol is a high-purity, solid diol monomer characterized by its rigid, bulky molecular structure. This compound matters for its role as a key building block in the synthesis of advanced polymers, where it imparts superior thermal stability, chemical resistance, and optical clarity. It is primarily needed by manufacturers in the polymer, specialty chemical, and pharmaceutical industries for producing high-performance polyesters, coatings, and as an intermediate in fine chemical synthesis.

Application

• Polymer Modification: A critical monomer for synthesizing high-performance, amorphous copolyesters (e.g., Tritan™-type resins) used in durable goods, medical devices, and food contact materials.
• Coatings and Resins: Imparts enhanced hardness, weatherability, and chemical resistance to industrial and automotive coatings, powder coatings, and UV-curable resins.
• Pharmaceutical Intermediates: Serves as a chiral building block or precursor in the synthesis of complex active pharmaceutical ingredients (APIs) and fine chemicals.
• Adhesives and Sealants: Used to formulate high-strength, temperature-resistant adhesives and sealants for demanding industrial applications.
• Plasticizers and Additives: Functions as a non-phthalate plasticizer intermediate or a property-enhancing additive in various polymer systems.
• Research & Development: Employed in academic and industrial R&D for developing novel polymeric materials with tailored thermal and mechanical properties.

Basic Information

Product Name	2,2,4,4-Tetramethyl-1,3-Cyclobutanediol
CAS No.	3010-96-6
Molecular Formula	C8H16O2
Molecular Weight	144.21 g/mol
Synonyms	TMCD; 2,2,4,4-Tetramethylcyclobutane-1,3-diol; 1,3-Cyclobutanediol, 2,2,4,4-tetramethyl-; Cyclobutanediol, tetramethyl-; CBDO; NSC 66445; Tetramethylcyclobutanediol
EINECS	221-132-2

Quality Control

Our 2,2,4,4-Tetramethyl-1,3-Cyclobutanediol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and physical properties. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and moisture content are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are 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	128°C - 135°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.