Description

2,2,7,7-Tetramethyloctane-1,8-Diol is a high-purity, symmetrical diol characterized by its branched hydrocarbon chain. This structure makes it a valuable hydrophobic building block and intermediate for synthesizing specialty polymers and fine chemicals. It is primarily utilized in industries requiring materials with specific solubility profiles, thermal stability, and low polarity, such as advanced lubricants, polymer modifiers, and performance additives.

Application

• Polymer Synthesis: Serves as a monomer or chain extender for producing polyesters, polyurethanes, and polycarbonates with enhanced hydrophobicity and flexibility.
• Lubricant & Grease Formulation: Used as a base fluid or thickening agent component for synthetic lubricants requiring high thermal and oxidative stability.
• Surface Coatings & Resins: Acts as a modifying diol in alkyd resins and coating formulations to improve water resistance and durability.
• Plasticizer & Additive Intermediate: Employed in the synthesis of specialty plasticizers and stabilizers for polymers like PVC.
• Pharmaceutical & Agrochemical Intermediates: Functions as a key chiral intermediate or protecting group precursor in the synthesis of complex organic molecules.
• Adhesive & Sealant Systems: Incorporated to modify the rheology and adhesion properties of polyurethane-based adhesives and sealants.

Basic Information

Product Name	2,2,7,7-Tetramethyloctane-1,8-Diol
CAS No.	27143-31-3
Molecular Formula	C12H26O2
Molecular Weight	202.33 g/mol
Synonyms	1,8-Octanediol, 2,2,7,7-tetramethyl-; 2,2,7,7-Tetramethyl-1,8-octanediol; Tetramethyloctanediol; TMOD; 2,2,7,7-Tetramethyloctamethylenediol; 27143-31-3; NSC 66480
EINECS	Contact for details

Quality Control

Our 2,2,7,7-Tetramethyloctane-1,8-Diol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. 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). Keep the container tightly sealed to prevent absorption of atmospheric moisture, which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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