The term you queried, “Polyether Small Malformation GP-330,” should be an input error for “Polyether Defoamer GP-330.” The chemical name of this product is Glycerol Polypropylene Ether (C12-14 Fatty Alcohol Polyoxyethylene Polyoxypropylene Ether), with CAS number 68439-50-9. It is a core defoamer product in the Guoli Chemical database. It appears as a colorless to slight yellow transparent liquid, belongs to non-ionic surfactants, has an HLB value of about 1, and features extremely low foaming properties along with excellent defoaming and foam suppression performance.
The key advantage of GP-330 lies in its outstanding high-temperature stability and chemical tolerance—it maintains defoaming activity under high-temperature conditions, is not easily decomposed or deactivated, and can withstand acidic, alkaline, and hard water environments. It disperses easily in water, has good compatibility with various water-based resins, additives, and formulation systems, and is less likely to cause film defects such as craters or fisheyes. Its liquid form also facilitates measurement and addition.
This product is widely used in water-based coatings, adhesives, inks, industrial water treatment, textile printing and dyeing, papermaking, metalworking fluids, and industrial cleaning. In various water-based systems, it can quickly eliminate existing foam and persistently suppress foam regeneration, effectively ensuring production continuity and product quality.
| Parameter Item | Value\/Indicator |
|---|---|
| Chemical Name | C12-14 Fatty Alcohol Polyoxyethylene Polyoxypropylene Ether |
| CAS Number | 68439-50-9 |
| Ionic Type | Non-ionic |
| Appearance | Colorless to slight yellow transparent liquid |
| Molecular Weight | ~3000 |
| HLB Value | 1 |
| Cloud Point (1% Aqueous Dispersion) | ≤20°C |
| pH Value (1% Aqueous Solution) | 5.0~8.0 |
| Density | 0.85~1.05 g\/cm³ |
| Kinematic Viscosity (25℃) | 300~500 mm²\/s |
| Freezing Point | <−20℃ |
| Flash Point (Open Cup) | ＞200℃ |
| Hydroxyl Value | 54.5~58.5 mg KOH\/g |
| Acid Value | ≤0.05 mg KOH\/g |
| Moisture Content | ≤0.05% |
| Surface Tension (0.1% Dispersion) | Approx. 30 mN\/m |
| Iodine Value | ≤1 g I₂\/100g |
| Heavy Metals (as Pb) | ≤10 mg\/kg |
| Arsenic Content | ≤2 mg\/kg |
The recommended dosage of GP-330 is 0.05%~0.5% of the total system weight (the specific dosage should be determined through trials based on the actual formulation and foam conditions). It is recommended to add it slowly while stirring the system to ensure even dispersion. A portion can be added during the grinding and dispersion stage to suppress foam generated during grinding, and the remainder can be supplemented during the paint mixing or filling stage to achieve the optimal balance between defoaming and foam suppression. Before use, shake or stir thoroughly; if slight stratification occurs after long-term storage, it is normal and will not affect performance after mixing.