600P-85% tristyrylphenol polyoxyethylene ether phosphate is a high-activity anionic phosphate surfactant, with main physicochemical technical parameters covering appearance, active content, pH value, HLB value, viscosity, acid value, and phosphate composition.
Detailed Description
600P-85% tristyrylphenol polyoxyethylene ether phosphate (also known as 600# phosphate ester, emulsifier 600P) is a high-performance anionic surfactant obtained by phosphate esterification modification based on tristyrylphenol polyoxyethylene ether. The product appears as a light yellow to yellow high-viscosity liquid, with CAS number not available. With a unique molecular structure of "multi-aromatic ring lipophilic backbone + polyoxyethylene chain + phosphate ester group," it combines the dual characteristics of nonionic and anionic surfactants, exhibiting excellent interfacial control ability in complex systems.
The product has an HLB value of 12.5, belonging to a hydrophilic emulsifying dispersant, easily soluble in water and various organic solvents. Its phosphate ester structure endows the product with excellent electrolyte and hard water resistance, maintaining stable activity in high-salt systems. The foam properties range from low to moderate foam, making it more suitable than traditional anionic surfactants for industrial operations requiring foam control. It also has good formulation compatibility and can be compounded synergistically with nonionic, anionic, cationic, and amphoteric surfactants.
Technical Parameters
Basic Physicochemical Indicators
| Parameter | Value | Remarks |
|---|
| Appearance | Light yellow to yellow | High-viscosity liquid |
| Ionic type | Anionic | — |
| Active content | ≥85% | — |
| pH value (1% aqueous solution) | 2.0~3.5 | Acidic |
| pH value (5% aqueous solution) | 2.0~4.0 | — |
| HLB value | 12.5 | Hydrophilic |
| Density | ~1.10 g/cm³ | — |
| Moisture content | ≤0.5% | — |
| Flash point | >150°C | — |
| Refractive index | ~1.49 | — |
| Molecular weight | ~1000-2000 | Mixture of polyoxyethylene ether phosphate |
| Cloud point | None | Anionic surfactants usually have no cloud point |
Viscosity and Surface Properties
| Parameter | Value | Remarks |
|---|
| Kinematic viscosity (25°C) | 2000~5000 mm²/s | — |
| Low shear viscosity | 2000~5000 mPa·s | — |
| Surface tension (1% aqueous solution) | 30~35 mN/m | — |
| Critical micelle concentration (CMC) | 0.01%~0.05% | — |
Phosphate Composition and Acid Value
| Parameter | Value | Remarks |
|---|
| Acid value | 70~110 mgKOH/g | — |
| Monophosphate ester content | 40%~60% | — |
| Diphosphate ester content | 20%~40% | — |
| Combined phosphorus (as P₂O₅) | 4%~8% | — |
| Free phosphoric acid (as H₃PO₄) | ≤0.5% | — |
| Free alcohol | ≤3% | — |
Quality Control and Impurity Limits
| Parameter | Value | Remarks |
|---|
| Heavy metals (as Pb) | ≤10 mg/kg | — |
| Arsenic (As) | ≤2 mg/kg | — |
| Solubility | Easily soluble in water and organic solvents | — |
| Foam properties | Low to moderate foam | — |
| Alkali resistance | General, easily hydrolyzed | Avoid strong alkaline conditions |
| Chemical stability | Stable under normal conditions, avoid strong alkali | — |
| Hygroscopicity | Low | — |
Application Suggestions
Based on the above technical parameters, the application suggestions for this product are as follows: HLB value of 12.5 is suitable as an emulsifier for O/W emulsions, performing as an efficient emulsifying dispersant in pesticide emulsifiable concentrates, water emulsion, microemulsion, and other formulations; low surface tension (30~35 mN/m) provides excellent wetting and spreading ability, suitable for textile dyeing leveling agents and industrial cleaning formulations; monophosphate ester content of 40%~60% ensures good electrolyte resistance, applicable for oilfield chemicals and high-salt systems; low to moderate foam characteristics give it a significant advantage in metalworking fluids and waterborne coatings where foam control is required. It is recommended to add during the acid or base adjustment stage of the formulation, and determine the optimal addition ratio through gradient tests. Recommended storage temperature is 5°C to 40°C.
Precautions
- The product pH value is acidic (1% aqueous solution pH 2.0~3.5). Protective measures should be taken during use and mixing to avoid direct contact with skin and eyes.
