Rapid Penetrant T-70E should be added at appropriate ratios depending on different industries and application scenarios. The typical recommended dosage range is 0.1% to 2.0% of the total working solution. It is recommended to determine the optimal dosage through small-scale tests.
Detailed Explanation
Rapid Penetrant T-70E (Wetting Agent OT) is a general-purpose anionic surfactant, chemically named sodium di(2-ethylhexyl) sulfosuccinate. The product is a colorless to light yellow transparent viscous liquid with an active matter content ≥70%. Its core function is to rapidly reduce the surface tension of liquids (1% aqueous solution surface tension ≤30 mN/m), achieving efficient penetration and wetting, playing a key role in industries such as textiles, pesticides, coatings, and cleaning.
When using, directly add this product to water or an aqueous working solution system and stir evenly. Due to its moderate viscosity (≤200 mPa·s at 25°C), it is easy to operate and can be added directly by pouring or pumping. It is recommended to add slowly under stirring to ensure full dispersion and dissolution. This product is easily soluble in water and has good compatibility in hard water, acid, and alkali systems — excellent alkali resistance, capable of withstanding 80~100g/L NaOH concentration, suitable for strong alkaline process environments such as textile pretreatment.
Regarding the specific recommended dosage, the Guoli Chemical product database does not have a uniform fixed value because the optimal dosage depends on the substrate type, treatment method, process temperature, contact time, and the synergistic effect of other components in the formulation. Below are typical reference dosage ranges for various industries. It is strongly recommended to conduct small-scale tests before large-scale use to determine the best addition ratio that suits your process system and economy.
Technical Parameters
| Parameter Name | Value |
|---|
| Appearance | Colorless to light yellow transparent liquid |
| Ionic Type | Anionic |
| Active Matter Content | ≥70% |
| HLB Value | Approximately 13 |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Penetration Power (1% Aqueous Solution, Canvas Sedimentation Method) | ≤5 seconds |
| Surface Tension (1% Aqueous Solution) | ≤30 mN/m |
| Critical Micelle Concentration (CMC, 25°C) | Approximately 0.1% |
| Density (25°C) | 1.05~1.10 g/cm³ |
| Kinematic Viscosity (25°C) | ≤200 mm²/s |
| Alkali Resistance | Good, withstands 80~100g/L NaOH |
| Foam Characteristics | Low foam |
Application Recommendations
The following are general reference dosages for various industries (based on the total weight of the working solution or formulation):
- Textile Printing and Dyeing Pretreatment (Desizing/Scouring/Bleaching): 0.5~2.0 g/L, which accelerates the penetration of alkali and bleaching liquor into the fiber interior, improving treatment uniformity and efficiency.
- Textile Printing and Dyeing Finishing: 0.1~0.5% (by weight of finishing liquid), promoting deep adsorption and spreading of finishing agents on the fabric.
- Leather Processing (Soaking/Degreasing/Tanning): 0.3~1.0% of the pelt weight, shortening soaking and rehydration time, eliminating hard spots and color streaks.
- Paper Industry (Coating/Sizing/Deinking): 0.05~0.3% (based on bone-dry pulp or coating weight), improving coating uniformity and enhancing ink detachment efficiency.
- Pesticide Formulations (Wettable Powder/Suspension Concentrate/Soluble Concentrate): 1.0~5.0% of the total formulation, enhancing the spreading and penetration of the spray liquid on the target surface, improving efficacy.
- Coatings and Inks: 0.1~0.5% of the total formulation, used for pigment wetting and dispersion and substrate spreading, reducing shrinkage and floating color.
- Metal Cleaning and Industrial Cleaners: Add 2.0~8.0% by weight in the concentrate, working solution concentration 0.1~0.5%, improving degreasing and detergency efficiency.
- Household Cleaners (Laundry Liquid/Hard Surface Cleaner): 0.5~2.0% of the total formulation.
- Emulsion Polymerization: 0.5~2.0% of the monomer total, as an auxiliary emulsification stabilizer, adjusting latex particle size distribution.
- Petroleum Extraction (Drilling Fluid/Oil Displacement Agent): 0.1~0.5%, reducing interfacial tension, improving wetting reversal and displacement efficiency.
Data Source Note: The above dosages are general reference values based on product characteristics and industry experience. The Guoli Chemical product database does not contain standard dosage data for each industry. The final dosage must be determined by the user through small-scale experiments.
Precautions
- Small-scale test priority: When first applied to a new system, it is necessary to determine the optimal economical dosage through laboratory small-scale tests to avoid excessive use leading to foam issues or increased costs.
- Addition sequence: It is recommended to stir water or aqueous solvent evenly before slowly adding this product. If the formulation contains nonionic surfactants, note that there may be synergistic or antagonistic effects between them, and compatibility should be verified through experiments.
- Personal protection: This product can cause skin irritation (H315) and serious eye irritation (H319). When handling, wear nitrile or neoprene protective gloves, chemical safety goggles, and protective work clothing.
- Storage requirements: Store sealed in a cool, dry, and well-ventilated place, with an ambient temperature recommended between 5°C and 35°C, to prevent freezing or high-temperature deterioration. Keep away from strong oxidizers, strong acids, and strong bases.
- Environmental requirements: This product is harmful to aquatic life with long-lasting effects (H412). Do not discharge waste liquid containing this product directly into water bodies or sewers. Disposal must comply with local environmental regulations.
