Low-foam penetrant SF is produced by Haian County Guoli Chemical Co., Ltd. The full chemical name is fatty alcohol polyoxyethylene ether phosphate ester. It appears as a colorless to light yellow transparent liquid with an active content ≥99%. Its molecular structure is a mixture of monoester (RO(CH₂CH₂O)₉PO₃H₂, R=C12-14 alkyl) and diester, with monoester content ≥60%. The molecular weight is approximately 676 (calculated as monoester). Although classified as a nonionic surfactant, the phosphate ester group imparts anionic characteristics. The HLB value ranges from 11 to 13, and it is easily soluble in water.
Its most outstanding performance advantages are reflected in three aspects: first, excellent low-foam property, producing extremely low foam in dynamic circulation cleaning or high-pressure spraying systems, effectively avoiding production interruptions caused by foam overflow; second, rapid penetration, with a 1% aqueous solution at 25°C achieving canvas sedimentation time of ≤10 seconds, quickly wetting and penetrating into fibers and dirt layers; third, excellent chemical stability, resistant to acid, alkali, and hard water, especially capable of withstanding NaOH solutions up to 300 g/L, with stable and reliable performance.
In terms of safety, this product is not classified as a dangerous chemical. It is non-flammable (flash point >150°C), low skin irritation (rabbit skin irritation score <0.5), acute oral and dermal toxicity LD50 >2000 mg/kg bw, and high storage and usage safety.
| Parameter | Technical Indicator |
|---|---|
| Chemical Name | Fatty alcohol polyoxyethylene ether phosphate ester |
| CAS Number | 26468-86-0 |
| Appearance | Colorless to light yellow transparent liquid |
| Ionic Type | Anionic (with nonionic characteristics) |
| HLB Value | 11~13 |
| Active Content | ≥99% |
| pH (1% aqueous solution) | 5.0~7.0 |
| Cloud Point (1% aqueous solution) | ≥100°C |
| Penetration (1% aqueous solution, 25°C, canvas sedimentation method) | ≤10 seconds |
| Surface Tension (0.1% aqueous solution, 25°C) | Approx. 30 mN/m |
| Critical Micelle Concentration (CMC) | Approx. 150 mg/L |
| Density (25°C) | 1.05~1.10 g/cm³ |
| Kinematic Viscosity (25°C) | 200~400 mm²/s |
| Acid Value | 80~120 mgKOH/g |
| Saponification Value | 120~150 mgKOH/g |
| Moisture Content | ≤1.0% |
| Flash Point | >150°C |
| Alkali Resistance | Resistant to 300g/L NaOH solution |
| Foam Characteristics | Low foam, little and unstable foam |
| Freezing Point | <0°C (liquid) |
| Monoester Content | ≥60% |
| Heavy Metals | ≤20 mg/kg |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote |
Low-foam penetrant SF is widely used in five major fields: