Fast T-70B, chemically known as dioctyl sodium sulfosuccinate (CAS: 577-11-7), is a highly efficient anionic surfactant. With its outstanding rapid penetration capability and excellent wetting and spreading properties, it is used as a key functional auxiliary in many industrial fields.
In textile printing and dyeing, it is used to quickly reduce the surface tension of the dye liquor, helping dyes instantly wet and penetrate fibers, thus improving leveling and dyeing rate. In pesticide formulations, it serves as an efficient wetting agent for wettable powders and aqueous suspensions, enhancing the spreading and penetration of the spray liquid on plant leaf surfaces. In coatings and inks, it improves the wetting and leveling of water-based systems on substrates, prevents defects such as cratering and orange peel, and promotes pigment dispersion.
In industrial cleaning and petroleum extraction, the former is used for hard surface cleaning of metals and electronic components, quickly removing oil and carbon deposits; the latter serves as a wetting reversal agent and cleanup additive, reducing oil-water interfacial tension and improving water flooding efficiency. Additionally, it is applied in papermaking (deinking of waste paper, internal sizing), leather processing (soaking, degreasing, tanning), metal surface treatment (pickling, phosphating, pre-treatment for electroplating), and photosensitive materials (coating of films and photographic paper emulsions).
| Industry | Specific Process/Use | Functional Effect |
|---|---|---|
| Textile Printing and Dyeing | Pre-treatment for dyeing and printing | Rapid penetration into fibers, improves leveling, reduces dye spots |
| Pesticide Formulations | Wettable powders, aqueous suspensions | Enhances spreading and penetration of spray liquid, improves efficacy |
| Coatings and Inks | Water-based coatings, water-based inks | Improves wetting and leveling, prevents surface defects, promotes pigment dispersion |
| Daily Chemicals | Detergents, cleansers, shampoos | Enhances cleaning penetration, improves cleaning effect |
| Industrial Cleaning | Hard surface cleaning of metals and electronic components | Quickly removes oil and carbon deposits, shortens cleaning time |
| Petroleum Extraction | Water flooding for oil displacement, fracturing fluid cleanup | Wetting reversal, reduces oil-water interfacial tension, improves flowback rate |
| Papermaking Industry | Deinking of waste paper, internal sizing, coating processing | Promotes uniform distribution of chemicals, improves paper uniformity |
| Leather Processing | Soaking, degreasing, tanning | Accelerates penetration of chemicals, ensures uniform and soft rehydration of leather |
| Metal Surface Treatment | Pickling, phosphating, pre-treatment for electroplating | Eliminates surface gas film, ensures continuous and dense coating |
| Photosensitive Materials | Coating of films and photographic paper emulsions | Promotes uniform coating spreading, eliminates bubbles and streaks |
This product is harmful if swallowed (LD50 ≈ 1900 mg/kg). It is irritating to skin and eyes. When handling, wear protective gloves, goggles, and a face shield, and use in a well-ventilated area. For detailed safety information, please refer to the product SDS.