2,4,7,9-Tetramethyl-5-decyne-4,7-diol
Chemical Name: 2,4,7,9-Tetramethyl-5-decyne-4,7-diol
Molecular Formula: C₁₄H₂₆O₂
CAS Number: 126-86-3
A high-performance acetylenic diol surfactant offering superior control of surface tension and flow in coating and ink formulations. TMDD serves as a multifunctional additive providing improved wetting, leveling, and compatibility across a wide range of solvent-borne and aqueous systems.

Technical Specifications
Discover the technical specifications of our 2,4,7,9-Tetramethyl-5-decyne-4,7-diol products.
Chemical Identity
| Chemical Name | 2,4,7,9-Tetramethyl-5-decyne-4,7-diol |
| Synonyms | TMDD, Surfynol® 104 analogue, Acetylenic diol surfactant |
| CAS Number | 126-86-3 |
| EC Number | 204-809-1 |
| Molecular Formula | C₁₄H₂₆O₂ |
| Molecular Weight | 226.36 g/mol |

VUP Specifications (Standard Grade)
| Property | Specification |
|---|---|
| Appearance | White to pale solid / waxy flakes |
| Purity | ≥ 98.0 % (typical) |
Note: Specifications that are provided above are typical values and should not be considered as guaranteed analysis.
Key Features & Benefits
Discover the unique advantages of VUP's 2,4,7,9-Tetramethyl-5-decyne-4,7-diol for your applications.
Surface Tension Control
Reduces both static and dynamic surface tension for improved substrate wetting.
Improved Flow & Leveling
Prevents defects such as craters, pinholes, and orange peel in coatings and inks.
Broad Compatibility
Performs well in waterborne, solventborne, and UV-curable systems.
Low Foam Formation
Enables stable film formation without excessive foaming.
Versatile Functionality
Acts as wetting agent, flow modifier, or coalescing additive in various formulations.
EU-Origin Quality
Manufactured under ISO 9001:2015, ensuring high purity and batch consistency.
Product Information & Technical Documents
Essential information and documentation for 2,4,7,9-Tetramethyl-5-decyne-4,7-diol
Product Identification
Key product details and identifiers
Technical Documents
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Technical Data Sheet (TDS)
Complete technical specifications, physical properties, and application information for 2,4,7,9-Tetramethyl-5-decyne-4,7-diol
Safety Data Sheet (SDS)
Safety information, handling procedures, and regulatory details for 2,4,7,9-Tetramethyl-5-decyne-4,7-diol
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Frequently Asked Questions
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