What is Fast T-70B, Rapid Penetrant T, Wetting Agent OT?

Fast T-70B (Rapid Penetrant T / Wetting Agent OT) is a highly effective anionic surfactant, chemically known as Dioctyl Sodium Sulfosuccinate (CAS No.: 577-11-7), renowned for its excellent rapid penetration and wetting capabilities, and widely used in over a dozen industrial fields such as textiles, pesticides, coatings, daily chemicals, and industrial cleaning.

Detailed Description

Fast T-70B, also known as Rapid Penetrant T or Wetting Agent OT, is chemically named Dioctyl Sodium Sulfosulfonate (DOSS) and is an anionic surfactant. The product appears as a colorless to light yellow transparent viscous liquid, and is one of the most classic rapid penetrants and wetting agents in the industrial field, commonly referred to as Aerosol OT.

The core value of this product lies in its extremely strong ability to reduce interfacial tension—it can rapidly spread and penetrate into microscopic pores on solid surfaces within a very short time. This characteristic makes it an irreplaceable auxiliary in processes requiring quick wetting. At the same time, Fast T-70B maintains excellent stability in acidic, alkaline, and hard water media, making it suitable for a wide range of working conditions and compensating for the lack of acid and hard water resistance in ordinary anionic surfactants.

In addition to its two core functions of penetration and wetting, Fast T-70B also possesses good emulsifying and dispersing properties, helping to form stable and uniform mixed systems, and plays an important role in formulations requiring multiphase dispersion, such as pesticide preparations, coatings, inks, and industrial cleaning. However, it should be noted that this product is classified as acute toxicity (oral) Category 4, skin irritation Category 2, serious eye damage Category 2, and respiratory tract irritation Category 3. Safety operating procedures must be followed during use.

Technical Parameters

Application Recommendations

Fast T-70B is used in multiple industrial fields. The following are the main application scenarios and recommendations:

• Textile Dyeing and Printing: Quickly reduces the surface tension of dye liquor, helping dyes instantly wet and penetrate fibers, improving leveling and dyeing rate, and reducing dye spots.
• Pesticide Formulations: Acts as an efficient wetting agent in wettable powders, suspension concentrates, etc., enhancing the spreading and penetration of spray liquid on plant leaves and target surfaces.
• Coatings and Inks: Improves the wetting and leveling properties of water-based coatings and inks on substrates, preventing defects such as craters and orange peel, and promoting pigment dispersion.
• Industrial Cleaning: Serves as a powerful penetrant for cleaning hard surfaces such as metals and electronic components, quickly stripping oil and carbon deposits.
• Petroleum Extraction: Used as an effective wetting reversal agent and cleanup additive to reduce oil-water interfacial tension, improving water injection oil displacement efficiency and fracturing fluid flowback rate.
• Other industries such as papermaking, leather, metal surface treatment, and photosensitive materials are also applicable. Specific dosage should be determined through experiments based on process conditions.

Precautions

Hazard Information: This product is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Protective gloves, protective clothing, eye protection, and face protection must be worn during operation. Use in a well-ventilated area and wash skin thoroughly after handling. Do not eat, drink, or smoke during use.

First Aid Measures: If swallowed, rinse mouth; do not induce vomiting; seek medical advice immediately. In case of skin contact, remove contaminated clothing and rinse with plenty of water. In case of eye contact, rinse with water for several minutes and remove contact lenses. If inhaled, move the person to fresh air. Store in a tightly closed container in a well-ventilated place and keep locked up.