The quick-penetrating agent Fast T-50H (CAS: 577-11-7) is a high-performance anionic surfactant with a chemical composition of sodium di(2-ethylhexyl) sulfosuccinate (DOSS). Its molecular formula is C20H37NaO7S, molecular weight is 444.56, and appearance is a colorless to light yellow transparent liquid. With its extremely low surface tension, this product imparts excellent quick-penetrating properties and good wettability to the system, even performing well on hydrophobic surfaces.
The solid content and active matter content of this product are stable at 48~52%, with good formulation compatibility. Its HLB value is 10.5, providing a good balance in oil-water two-phase systems. The product has high chemical stability, with resistance to acids, alkalis, and hard water, and can be used over a wide pH range. However, it should be noted that the cloud point parameter is not applicable to the characteristics of anionic surfactants.
The most prominent application advantage of Fast T-50H lies in its efficient penetration rate. The standard canvas sedimentation test can be completed within 5 seconds, making it highly favored in industries such as textiles, pesticides, and leather. Additionally, as a low-foaming product, it can effectively avoid foam-related issues during application.
| Item | Parameter Index |
|---|---|
| Ionic Type | Anionic |
| Appearance | Colorless to light yellow transparent liquid |
| CAS Number | 577-11-7 |
| Molecular Formula | C20H37NaO7S |
| Molecular Weight | 444.56 |
| Active Matter Content | 48~52% |
| Solid Content | 48~52% |
| Moisture | 48~52% |
| pH Value | 5.0~7.0 (1% aqueous solution / 5% aqueous solution) |
| HLB Value | 10.5 |
| Surface Tension | ≤30 mN/m |
| Critical Micelle Concentration (CMC) | 0.68~1.1 g/L |
| Penetrability | <5 seconds (standard canvas sedimentation method) |
| Solubility | Easily soluble in water |
| Density | 1.05~1.10 g/cm³ |
| Viscosity | 50~150 mm²/s (kinematic viscosity) / 50~200 mPa·s (low shear) |
| Refractive Index | 1.350~1.400 |
| Cloud Point | Not applicable (characteristic of anionic surfactants) |
| Flash Point | >100 °C (closed cup) |
| Iodine Value | <0.5 |
| Acid Value | ≤2.0 |
| Saponification Value | ~252 |
| Hydroxyl Value | None |
| Melting Point (Pure) | 153~157°C |
| Foam Characteristics | Low foaming |
| Chemical Stability | Resistant to acids, alkalis, and hard water |
| Diester Content | ≥45% |
| Monoester Content | ≤2% |
| Free Alcohol | ≤1% |
| Heavy Metals | ≤10 ppm |
| Arsenic | ≤2 ppm |
| Packaging Specifications | 50kg/200kg plastic drum, IBC tote |
Based on its strong penetration and wetting performance, Fast T-50H is particularly suitable for industrial fields requiring accelerated liquid penetration. In textile dyeing and printing, it is used in pretreatment and dyeing processes, significantly improving dye uptake and leveling; in pesticide formulations as a wetting synergist, it enhances the spreading ability of the liquid on plant leaves; in the leather industry, it is used for soaking and degreasing, reducing processing time. In cleaning formulations, it quickly penetrates between dirt and substrates, stripping stubborn stains.
For different application systems, since its active matter content is approximately 50%, gradient dilution and formulation screening are recommended to determine the optimal addition amount. When preparing aqueous emulsions or suspensions, its HLB value of 10.5 is a very valuable reference indicator. Due to its low foaming property, it is also suitable for high shear or circulating pump systems.