3,5-Dimethyl-1-hexyn-3-ol 99% – Nonionic Acetylenic Surfactant

3,5-Dimethyl-1-hexyn-3-ol 99% – High-Purity Volatile Wetting Agent (Surfynol 61)

3,5-Dimethyl-1-hexyn-3-ol (CAS 107-54-0), commercially known as Surfynol 61, is a tertiary acetylenic alcohol belonging to the alkynol class of nonionic surfactants.It is supplied as a clear, colorless to pale yellow liquid with a characteristic camphor-like odor.

Key Properties:

• Molecular Formula: C₈H₁₄O

• Molecular Weight: 126.2 g/mol

• Purity: ≥99%

• Boiling Point: 150–151 °C

• Density: 0.859 g/mL at 25 °C

• Surface Tension: 32.1 dyne/cm (equilibrium)

• Vapor Pressure: 4.5 mmHg (0.6 kPa) at 20 °C

Performance Benefits:
This surfactant offers a ~1000× vapor pressure advantage over higher-molecular-weight acetylenic diols, ensuring complete volatilization without leaving surface films or residues.Its unique bifunctional structure—combining a terminal alkyne with a tertiary hydroxyl group—imparts both surface activity and significant volatility.

Applications:

• Adhesives: Provides excellent wetting of polyethylene and polypropylene films.

• Water-Based Coatings: Functions as both an antifoaming agent and surfactant.

• Precision Cleaning: Volatile nature ensures residue-free evaporation.

• Silicone Formulations: Acts as a thermally triggered platinum catalyst blocker for controlled pot life.

• Organic Synthesis: Serves as an intermediate in the synthesis of acetylene glycol derivatives.

Recommended Usage:
0.5–3% of total formulation weight.

Packaging & Handling:
Available in 5 ml, 25 ml, 100 ml, 500 ml, and bulk quantities.Classified as a flammable liquid (UN1987). Store in a cool, well-ventilated area away from ignition sources.Shelf life: 60 months.