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Defoamer GP330 is a non-ionic, oil-based polyether defoamer, chemically known as glycerol polyoxypropylene ether. It appears as a pale yellow, viscous liquid with low water solubility and neutral pH. Widely used in pharmaceuticals, it controls foam during antibiotic fermentation and extraction. In food production—especially MSG and yeast manufacturing—it prevents overflow and improves efficiency. GP330 is also effective in sugar refining, paints, coatings, agrochemicals, and cleaning agents. Its key advantages include rapid foam-breaking action and long-lasting suppression, outperforming traditional defoamers like vegetable oils. Stable and efficient in low-viscosity systems, it’s a preferred choice in many industrial processes requiring reliable foam control. Typically supplied in 50–200 kg drums, it meets high-purity standards (≥99.8%) for consistent performance.
Items | Specifications | Results |
Appearance | Colorless, transparent and viscous liquid | Colorless, transparent and viscous liquid |
colour and lustre(Pt-Co) | ≤50# | 30 |
molecular weight | 2800--3200 | 3010 |
Hydroxyl value,mgKOH/g | 52--60 | 55.3 |
acid value,mgKOH/g | ≤0.5 | 0.09 |
Water,% | ≤0.5 | 0.06 |
Conclusion | The product conforms to the above specifications. | |
Defoamer GP330 (also known as 消泡剂GP330) is a specialized non-ionic, oil-based polyether-type defoaming agent, chemically identified as glycerol polyoxypropylene ether (or glycerol propoxylate). It is commonly used to eliminate and suppress foam in various industrial and chemical processes.
Chemical Name: Glycerol polyoxypropylene ether
Appearance: Colorless to pale yellow, viscous, transparent oily liquid
Odor: Slightly bitter
Solubility: Insoluble or poorly soluble in water; soluble in organic solvents like ethanol and benzene
pH: Approximately neutral (～7)
Purity: Typically ≥99.8%
Pharmaceutical Industry:
Controls foaming during fermentation, extraction, and mixing processes in antibiotic and vitamin production.
Food & Fermentation:
Used in monosodium glutamate (MSG) and yeast fermentation to prevent excessive foam that can reduce efficiency or cause overflow.
Paints & Coatings:
Prevents air entrapment and foam formation during manufacturing and application, improving surface finish.
Sugar Refining:
Added during juice clarification and evaporation to suppress persistent foam.
Biological Pesticides & Agrochemicals:
Effective in low-viscosity, thin foaming systems common in bio-pesticide production.
General Industrial Processes:
Employed in cleaning agents, adhesives, and polymerization reactions where foam interferes with operations.
Strong initial defoaming action
Long-lasting anti-foaming (foam suppression) effect
More effective than traditional defoamers like vegetable oils or alcohols
Chemically stable under typical process conditions
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