Quick Penetrant T-70E (Wetting Agent OT), chemically known as sodium di(2-ethylhexyl) sulfosuccinate, is a high-concentration (active content ≥70%) anionic surfactant. The product appears as a colorless to light yellow transparent viscous liquid, easily soluble in water, with an HLB value of approximately 13. It exhibits excellent penetration, wetting, and emulsifying dispersion capabilities. Its penetration power is extremely strong—the canvas settlement time of a 1% aqueous solution is ≤5 seconds, and it has outstanding characteristics such as low foam, resistance to hard water, and resistance to acids and alkalis (can withstand 80~100g/L NaOH). In practical applications, it is recommended to pre-dilute it with an appropriate amount of warm water or process water to a concentration of 10%~20%, stir evenly, and then add it to the working solution to ensure uniform dispersion and avoid local concentration.
The recommended dosage of this product varies by application scenario: In textile printing and dyeing pretreatment (desizing, scouring, bleaching), it is commonly used at 0.1%~0.5% (relative to the weight of the working solution); in leather soaking processes, 0.1%~0.3% is suggested; in paper coating and sizing, it is typically 0.05%~0.2%; in pesticide formulations, 0.5%~2% is added as a synergistic component; in paint and ink formulations, 0.1%~0.5% is added; in metal and industrial cleaning agents, 0.5%~3% is recommended. The above are general reference ranges. The actual dosage should be determined through experiments based on specific process requirements, substrate characteristics, and desired effects.
It is particularly important to note that although Quick Penetrant T-70E has good chemical stability and resistance to acids, alkalis, and hard water, when used in strong alkaline systems (e.g., high-concentration NaOH scouring liquor), it is recommended to conduct small-scale tests to verify compatibility. Additionally, this product has low-foam characteristics, making it especially suitable for spray cleaning and continuous processing processes. As an anionic surfactant, it can be compounded with most anionic and nonionic surfactants, but precipitation may occur when mixed with cationic surfactants, so careful compatibility formulation is required.
| Parameter Item | Indicative Value | Description |
|---|---|---|
| Active Content | ≥70% | High-concentration solution, requires dilution before use |
| Appearance | Colorless to light yellow transparent viscous liquid | — |
| Ionic Type | Anionic | Not suitable for compounding with cationic surfactants |
| HLB Value | Approximately 13 | Possesses both wetting and emulsifying functions |
| pH of 1% Aqueous Solution | 5.0~7.0 | Near neutral |
| Penetration Power | ≤5s (1% aqueous solution, canvas settlement method) | Fast penetration speed |
| Surface Tension (1% Aqueous Solution) | ≤30 mN/m | Significantly reduces liquid surface tension |
| Density (25°C) | 1.05~1.10 g/cm³ | — |
| Alkali Resistance | Can withstand 80~100g/L NaOH | Suitable for strong alkali pretreatment processes |
| Foam Characteristics | Low foam | Suitable for spray and circulation systems |
| Critical Micelle Concentration (CMC) | Approximately 0.1% (25°C) | Optimal effect can be achieved above this concentration |
| Water Solubility | Easily soluble in water | Directly soluble in cold or warm water |
| Application Field | Recommended Dosage (of Working Solution) | Key Usage Points |
|---|---|---|
| Textile Printing and Dyeing Pretreatment | 0.1%~0.5% | Add directly to desizing, scouring, and bleaching baths; can withstand 80~100g/L NaOH |
| Leather Processing (Soaking/Degreasing) | 0.1%~0.3% | Add to the soaking bath to accelerate fiber rehydration and chemical penetration |
| Paper Coating/Sizing | 0.05%~0.2% | Add to coating or sizing liquid to improve wetting and spreading properties |
| Pesticide Formulations | 0.5%~2% | Compounded in suspensions or aqueous solutions to enhance liquid wetting and penetration |
| Paints and Inks | 0.1%~0.5% | Add during the grinding stage to accelerate pigment wetting and dispersion |
| Metal Cleaning Agents | 0.5%~3% | Use in conjunction with alkaline cleaning agents to improve degreasing efficiency |
| Household Cleaning Agents | 0.5%~2% | Compounded in laundry detergents, hard surface cleaners, etc. |
| Emulsion Polymerization | 0.2%~0.5% | Participate as a co-emulsifier in the polymerization reaction |
| Petroleum Extraction | 0.05%~0.3% | Add to drilling fluids or oil displacement systems to improve wettability |
Note: The above dosages are reference ranges. The actual optimal dosage should be determined through small-scale testing.