Paper Defoamer XS-02 (CAS No.: 9004-81-3), also known as polyoxyethylene oleate, polyethylene glycol monooleate, is a white to light yellow viscous liquid. This product has good self-emulsifying dispersion performance in water, belonging to non-ionic surfactant defoamers, combining excellent instantaneous defoaming ability with long-lasting foam suppression performance.
The core advantage of this product lies in its non-ionic characteristic, which provides good compatibility with anionic, cationic auxiliaries, and various sizing agents and strengthening agents in the system, making it less prone to side reactions or precipitation. At the same time, ideal foam control can be achieved at very low dosages, offering outstanding economic efficiency without interfering with subsequent processes such as sizing and coating.
From a safety and environmental perspective, XS-02 is a non-hazardous substance, with low toxicity, no irritancy, non-flammable (closed cup flash point > 150 °C), environmentally friendly to aquatic ecosystems, and easily biodegradable, meeting the environmental requirements of clean production in the modern paper industry.
Defoaming in Pulping Black Liquor: Suitable for high-temperature and strong alkaline pulping black liquor environments, effectively eliminating large amounts of foam generated during cooking and washing processes, preventing black liquor tank overflow, and ensuring stable operation of the alkali recovery system.
Paper Machine White Water Circulation System: Used in the wet-end white water circulation of paper machines, quickly breaking fine foam and micro-bubbles in white water, improving fiber and filler retention, reducing paper defects, and decreasing the need for fresh water makeup.
Coating and Surface Sizing: In paper coating and surface sizing processes, efficiently removes air bubbles from coatings, preventing coating scratches, pinholes and other defects, enhancing coating uniformity and the surface quality of the finished paper.
In addition, this product is widely used in industrial water treatment (suppressing foam during aeration and mixing processes), water-based inks and adhesives (eliminating printing white spots and bonding defects caused by bubbles), and other fields. A single product can cover multiple processes, simplifying procurement and inventory management.
| Parameter Item | Specification |
|---|---|
| Product Type | Non-ionic polyether ester defoamer |
| CAS No. | 9004-81-3 |
| Appearance | White to light yellow viscous liquid |
| Dispersibility | Self-emulsifying dispersion in water |
| Closed Cup Flash Point | > 150 °C |
| Acute Toxicity (Oral, Rat) | LD50 > 2000 mg/kg |
| Skin/Eye Irritation | Non-irritating |
| Aquatic Toxicity LC50 (Fish, 96h) | > 100 mg/L |
| Biodegradability | Easily biodegradable |
It is recommended to conduct small-scale tests based on specific operating conditions before use to determine the optimal dosage. It can be added directly or after dilution, utilizing its self-emulsifying property for uniform dispersion in water. Suitable for key processes such as pulping black liquor (high temperature, strong alkali), paper machine white water circulation, coating preparation, surface sizing liquid, and internal addition, as well as for water-based inks, adhesives, and industrial circulating water treatment systems.