XPO-5 (Tristyrylphenol Ethoxylate Sulfate Ammonium Salt), also known as tristyrylphenol polyoxyethylene ether ammonium sulfate, tristyrylphenol polyoxyethylene ether ammonium sulfate salt, etc., with the English name Tristyrylphenol Ethoxylate Sulfate Ammonium Salt, is an anionic surfactant produced by Haian Guoli Chemical Co., Ltd. The product appears as a light yellow to brownish yellow transparent viscous liquid, and is a low-toxicity, readily biodegradable environmentally friendly chemical additive.
The molecular structure of this product contains both the hydrophobic tristyrylphenol group and the polyoxyethylene ether chain segment, with the terminal end modified by ammonium sulfate salt, giving it dual characteristics of nonionic and anionic surfactants. This unique molecular design endows XPO-5 with excellent emulsifying ability, superior wetting and penetrating power, and strong dispersing performance, while maintaining stable surface activity and effectiveness in acidic, alkaline, and hard water environments.
From a safety perspective, XPO-5 is non-irritating to the skin, non-sensitizing, may cause only minor discomfort to the eyes (eye irritation index ≤ 1.0), has an acute oral toxicity LD₅₀ > 2000 mg/kg (low toxicity), low toxicity to aquatic organisms, and a 28-day biodegradation rate exceeding 70% (OECD 301B standard), aligning with the current trend of green chemistry.
The application of XPO-5 covers multiple industrial fields, with core application scenarios including the following four areas:
1. Pesticide Emulsifier: Used as a high-efficiency emulsifier in pesticide formulations (such as emulsifiable concentrates, oil-in-water emulsions, microemulsions, etc.) to stably disperse oily pesticide active ingredients in water-based systems, ensuring uniformity during spray application and field effectiveness, improving pesticide utilization and control efficacy.
2. Emulsion Polymerization Emulsifier: Used in the emulsion polymerization reaction system of monomers such as acrylates, styrene, vinyl acetate, etc., to effectively emulsify monomer droplets and stabilize the generated latex particles, helping to control the particle size distribution of the polymer and improving the storage stability and film-forming performance of the final emulsion product.
3. Textile Auxiliary: Serves as a multifunctional auxiliary in textile pretreatment and dyeing processes, acting as a wetting agent to promote rapid and uniform wetting of fibers, and as an emulsifier to assist in the dispersion and penetration of dyes and auxiliaries, effectively improving fiber treatment uniformity and dyeing depth.
4. Industrial Detergent: Used as a key surfactant component in industrial cleaning formulations, providing excellent emulsifying and detergency capabilities, suitable for heavy-duty cleaning scenarios such as metal degreasing, hard surface cleaning, and vehicle cleaning, maintaining stable cleaning performance in both acidic and alkaline cleaning solutions.
| Parameter | Specification |
|---|---|
| Product Name | XPO-5 Tristyrylphenol Ethoxylate Sulfate Ammonium Salt |
| Ionic Type | Anionic Surfactant |
| Appearance | Light yellow to brownish yellow transparent viscous liquid |
| Toxicity Grade | Low toxicity (Rat oral LD₅₀ > 2000 mg/kg) |
| Skin Irritation | Non-irritating |
| Skin Sensitization | Non-sensitizing (Guinea pig maximization test, negative) |
| Eye Irritation | Eye irritation index ≤ 1.0, non-irritating |
| Aquatic Toxicity (Fish) | Zebrafish 96 h LC₅₀ > 100 mg/L |
| Aquatic Toxicity (Daphnia) | Daphnia magna 48 h EC₅₀ > 100 mg/L |
| Biodegradability | Readily biodegradable (OECD 301B, 28 days > 70%) |
| Storage Temperature | 5–40°C |
| CAS Number | Not available |
When using XPO-5, it is recommended to optimize the dosage according to the specific application system: typically 5%–15% of the active ingredient in pesticide formulations; 1%–4% of the total monomer amount in emulsion polymerization; and 2%–10% in industrial cleaning formulations. The actual optimal dosage should be determined through small-scale tests. During operation, wear chemical safety goggles, protective clothing, and chemical-resistant gloves, and ensure adequate ventilation in the workplace.