CASTECHL-63
Polyether-Based Defoamer for Concrete Admixtures
CASTECH L-63 is a polyether-based nonionic surfactant and an efficient foam control agent, owing to its low foam characteristics, inverse water solubility, high thermal and chemical stability and good steric stabilization.

Overview
About
CASTECH L-63 is a polyether-based nonionic surfactant and an efficient foam control agent, owing to its low foam characteristics, inverse water solubility, high thermal and chemical stability and good steric stabilization. In the admixture industry, CASTECH L-63 is used to control foam and reduce entrapped air. Its low surface tension also makes it an efficient low-foam wetting agent in water treatment, food processing, cleaning-in-place (CIP) and metal working formulations.
Typical uses
- Admixture | industry | – | concrete | admixture manufacturing
- Paper manufacturing
- Food processing
- Textile industry
- Water treatment
Benefits
Advantages
Key advantages
- High efficiency: highly effective in reducing foam even at low dosages, making it cost-effective
- Chemical stability: withstands harsh conditions such as high temperature and high pH
- Compatibility: compatible with a wide range of chemicals and additives used in different formulations
- Environmental friendliness: non-toxic, non-flammable and non-corrosive
- Versatility: suitable for use in various industries
Technical data
| Appearance | Clear Viscous Liquid |
|---|---|
| Specific Gravity | 1.124 |
| Solid Content | 99.0% |
| pH | 5 ± 1 |
Typical values. Refer to the TDS for full details and test conditions.
Application
Dosage
The optimal dosage of CASTECH L-63 depends on the specific process, the amount of foam being produced and the other chemicals and additives used. Generally, the dosage is in the range of 0.001% to 1.0% by weight, although it can vary depending on the circumstances. Trials are recommended to establish the optimum dosage.
Packaging & storage
Packaging
CASTECH L-63 is delivered in 200 L drums.
Storage & shelf life
- Store in cool conditions, away from direct sunlight
- Keep containers sealed when not in use
- Recommended storage temperature 15 to 45°C
- Shelf life is two years from date of manufacture
Health & safety
Health & Safety
CASTECH L-63 is non-toxic, non-flammable and non-corrosive. Suitable protective gloves and goggles should be worn. Splashes to the skin or eyes should be washed immediately with water and medical advice sought. Refer to the Material Safety Data Sheet for further information.

