When using Quick T-50H, the core precautions can be summarized as "three protections, one avoidance, and one prohibition": protect skin/eyes/environment, avoid strong acid and alkali conditions, and strictly prohibit direct discharge into water bodies.
Detailed Explanation
The fast penetrant Quick T-50H (dioctyl sulfosuccinate sodium salt, DOSS) is an anionic surfactant. Although it is not classified as a high-risk substance in the hazardous chemicals category, strict adherence to operating procedures is still required during use to ensure personnel safety, product performance, and environmental compliance.
First, operator protection is the first line of defense. This product is classified by GHS as Skin Irritant Category 2 (H315) and Serious Eye Damage/Eye Irritation Category 2 (H319), meaning direct skin contact can cause redness and pain, and splashing into the eyes can cause severe irritation. Therefore, permeable chemical protective gloves, safety goggles, or face shields must be worn during operation. The work area should maintain good ventilation, and hands and exposed skin should be thoroughly washed after operation.
Secondly, chemical usage conditions affect product performance. Quick T-50H is not resistant to strong acids or alkalis; it should be used under neutral or mild acid-base conditions to ensure optimal penetration and wetting performance. Therefore, attention should be paid to pH control during formulation design to avoid product decomposition or failure due to improper acid-base conditions.
Technical Parameters
| Parameter Item | Description |
|---|
| Product Type | Anionic surfactant |
| Chemical Composition | Di(2-ethylhexyl) sulfosuccinate sodium salt (DOSS) |
| CAS Number | 577-11-7 |
| Appearance | Colorless to light yellow viscous liquid |
| Flash Point | >100°C (closed cup), non-flammable liquid |
| Acid-base Stability | Not resistant to strong acids or alkalis, suitable for neutral and mild acid-base conditions |
| Acute Oral Toxicity (rat LD₅₀) | >2000 mg/kg |
| Fish Ecotoxicity (96h LC₅₀) | Approximately 10–100 mg/L |
Application Recommendations
- Textile Dyeing and Printing: Recommended for use in neutral or weakly acidic pretreatment baths; avoid direct compounding with strong alkaline scouring agents; it is recommended to conduct small-scale compatibility tests first.
- Pesticide Formulations: When added as a wetting and penetration enhancer, ensure the overall pH of the formulation does not deviate significantly from neutral to fully utilize the penetration enhancement effect.
- Leather Processing: In soaking and degreasing processes, it is recommended to control the operating liquid temperature between room temperature and 40°C; excessively high temperatures do not significantly improve penetration.
- Industrial Cleaning: Works well when formulated with anionic and nonionic surfactants, but avoid direct mixing with cationic surfactants to prevent precipitation and deactivation.
Precautions
- Prohibit direct discharge into water bodies: This product is toxic to aquatic organisms (fish 96h LC₅₀ approximately 10–100 mg/L); waste liquid must be collected and disposed of in accordance with local environmental regulations. Do not discharge directly into sewers, rivers, or soil.
- Storage Requirements: Keep sealed in a cool, dry, well-ventilated warehouse, away from direct sunlight; store separately from incompatible substances such as strong oxidizers and acids; reseal containers promptly after opening.
- Spill Emergency: For small spills, absorb with inert materials such as sand or vermiculite and collect in sealed containers; for large spills, dike to contain and transfer using explosion-proof pumps for disposal.
- First Aid Measures: In case of skin contact, immediately rinse with plenty of running water and soap for at least 15 minutes; in case of eye contact, rinse continuously with running water or saline for at least 15 minutes and seek immediate medical attention.
- Keep away from heat and ignition sources: Although it is a non-flammable liquid, it can release irritating vapors when heated; smoking and open flames are prohibited in the workplace.
