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Highly effective non-ionic defoamer and foam suppressant for aqueous systems.
Excellent thermal and hydrolytic stability across broad pH range (pH 2–12).
Low volatility and negligible odor — suitable for sensitive industrial and consumer applications.
Fast-acting with rapid surface migration and foam collapse kinetics.
Compatible with anionic, non-ionic, and cationic surfactants without destabilizing formulations.
Defoaming in water-based coatings, including architectural and industrial paints.
Foam control in textile dyeing and finishing baths.
Antifoam agent in agrochemical spray tank mixes and adjuvant formulations.
Process foam suppression in paper coating and sizing operations.
Stabilization aid in cleaning-in-place (CIP) and industrial detergent systems.
| Chemical Type | Alkynediol (3-Hexyne-2,5-diol) |
| Product Form | Pale yellow to colorless liquid |
| Appearance | Clear, mobile liquid at 20 °C |
| Melting Point | Approx. 22–24 °C |
| Boiling Point | Decomposes before boiling (≥180 °C under reduced pressure) |
| Primary Applications | Antifoam/defoamer in water-based industrial formulations |
| Key Features | Non-silicone, low-VOC, halogen-free, biodegradable backbone |
| Regulatory Compliance | REACH registered; compliant with EU Ecolabel criteria for antifoams (2022/1767) |
| Common Compatible Systems | Suitability |
| Acrylic emulsion polymer dispersions | Highly Recommended – Minimal impact on film formation and gloss |
| Alkylphenol ethoxylate (APEO)-free surfactant blends | Recommended – No precipitation or phase separation observed |
| Phosphate ester-based corrosion inhibitors | Suitable – Stable in formulation up to 5 wt% loading |
| High-solids pigment grinding slurries | Highly Recommended – Effective foam control without affecting rheology |
Q1: What is the CAS Number for BASF Golpanol HD 3-Hexyne-2,5-diol?
A: The CAS Registry Number is 71-91-0.
Q2: What is the typical dosage range in water-based coatings?
A: Recommended dosage is 0.05–0.3 wt% active substance relative to total formulation, depending on foam severity and shear conditions.
Q3: How does Golpanol HD compare to silicone-based antifoams?
A: Unlike silicones, Golpanol HD offers superior compatibility in high-shear, low-surface-tension systems, eliminates risk of substrate contamination (e.g., craters in coatings), and meets stringent VOC and regulatory requirements for eco-label certifications.
Q4: Is Golpanol HD subject to migration or extraction in food-contact applications?
A: Golpanol HD is not approved for direct food-contact applications; it is intended for industrial process use only. Migration testing data are not available for food packaging or processing equipment contact scenarios.
Q5: Does Golpanol HD require special handling or storage conditions?
A: Store in original sealed container at 5–30 °C, protected from moisture and direct sunlight. Avoid freezing; if solidified, warm gently to ≥25 °C with stirring — full activity is restored without degradation.
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E-mail: wangxingqiang@ericwchem.com
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