Description

2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol is a high-purity, non-ionic surfactant and wetting agent belonging to the class of acetylenic diols. This compound is valued for its exceptional ability to reduce dynamic surface tension, providing superior wetting, defoaming, and leveling properties in demanding formulations. It is a critical raw material for manufacturers in the coatings, inks, adhesives, and agrochemical industries who require high-performance additives to improve process efficiency and final product quality.

Application

• Coatings & Inks: As a highly effective wetting and dispersing agent for pigments, reducing surface defects and improving flow and leveling in water-based and solvent-based systems.
• Adhesives & Sealants: To enhance substrate wetting and improve adhesion on low-energy surfaces, while also acting as a defoamer.
• Agrochemical Formulations: As a key component in pesticide and herbicide concentrates to improve spray droplet coverage, reduce drift, and enhance foliar penetration.
• Industrial Cleaners: Used in metal treatment and cleaning formulations for its superior wetting and rinsing properties.
• Paper & Textile Processing: As a surfactant in coating formulations and dyeing processes to ensure uniform application.
• Polymerization: Acts as a surfactant and stabilizer in emulsion polymerization processes for synthetic rubbers and plastics.

Basic Information

Product Name	2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol
CAS No.	126-86-3
Molecular Formula	C14H26O2
Molecular Weight	226.36 g/mol
Synonyms	Surfynol 104; 2,4,7,9-Tetramethyl-5-decyne-4,7-diol; 5-Decyne-4,7-diol, 2,4,7,9-tetramethyl-; Acetylenic diol; Tetramethyl decynediol; TMDD; Dynol 604; 4,7-Dihydroxy-2,4,7,9-tetramethyl-5-decyne
EINECS	204-812-3

Quality Control

Our 2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting assay, moisture content, and other critical parameters is provided with each shipment to guarantee consistency and compliance for your industrial applications.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	42 - 48 °C
Moisture (KF)	≤ 0.5%
Ash Content	≤ 0.1%

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