The chemical name of Emulsifier 600 is polyoxyethylene tristyrylphenol ether, with CAS number 99734-09-5. The molecular formula can be expressed as C₆H₅C(C₈H₈)₃O(C₂H₄O)ₙH, where the EO addition number n≈20, and the average molecular weight is approximately 1300. This product is a nonionic surfactant, appearing as a light yellow to brownish yellow viscous liquid. Its viscosity increases as temperature decreases, it is easily soluble in water, and has hygroscopicity.
Among its core performance parameters, the HLB value (hydrophilic-lipophilic balance) is 13.5, and the cloud point is ≥90°C (1% aqueous solution), indicating strong hydrophilicity, suitable for O/W emulsification systems. The surface tension of a 1% aqueous solution at 25°C ranges from 30 to 35 mN/m, and the critical micelle concentration (CMC) is approximately 1×10⁻⁴ mol/L, demonstrating excellent surface activity.
The product has an active content of ≥99.0%, moisture ≤0.5%, acid value ≤0.5 mgKOH/g, saponification value ≤2.0 mgKOH/g, iodine value ≤1 gI₂/100g, and unsaturation ≤0.01 mol/kg, indicating high purity. Under normal temperature conditions, the product is chemically stable, but contact with strong oxidizing agents should be avoided.
| Parameter Item | Specification/Value | Remarks |
|---|---|---|
| Ion Type | Nonionic | — |
| Appearance | Light yellow to brownish yellow viscous liquid | Flowable, viscosity increases as temperature decreases |
| Active Content | ≥99.0% | — |
| HLB Value | 13.5 | Strong hydrophilicity, suitable for O/W emulsions |
| Cloud Point (1% Aqueous Solution) | ≥90°C | — |
| pH Value (1% Aqueous Solution) | 5.0~7.0 | — |
| Density (25°C) | 1.08~1.12 g/cm³ | — |
| Kinematic Viscosity (40°C) | 200~500 mm²/s | — |
| Low Shear Viscosity | 200~500 mPa·s | — |
| Refractive Index (20°C) | 1.490~1.495 | — |
| Surface Tension (1% Aqueous Solution, 25°C) | 30~35 mN/m | — |
| Critical Micelle Concentration (CMC) | Approximately 1×10⁻⁴ mol/L | — |
| Acid Value | ≤0.5 mgKOH/g | — |
| Saponification Value | ≤2.0 mgKOH/g | — |
| Iodine Value | ≤1 gI₂/100g | — |
| Unsaturation | ≤0.01 mol/kg | — |
| Hydroxyl Value | Varies with EO number | No fixed value data available |
| Moisture | ≤0.5% | — |
| Flash Point | ＞150°C | — |
| Solubility | Easily soluble in water | — |
| Foam Characteristics | Low foam | — |
| Penetrating Power | Good | — |
| Alkali Resistance | Alkali resistant | — |
| Heavy Metals (as Pb) | ≤20 mg/kg | — |
| Arsenic (As) | ≤3 mg/kg | — |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote | — |
Given that Emulsifier 600 has an HLB value of 13.5, a cloud point ≥90°C, and is easily soluble in water, this product is very suitable as a primary emulsifier or co-emulsifier for O/W emulsions. In pesticide formulations (such as emulsifiable concentrates, aqueous emulsions, microemulsions), its excellent dispersibility and emulsion stability can significantly enhance efficacy; in textile printing and dyeing, as a leveling agent, it can improve dye migration effects through good penetrating power; in industrial cleaning formulations, its low foam and easy water solubility characteristics can be utilized to formulate efficient degreasing cleaners.
It is recommended to adjust the dosage in the formulation according to the specific system. When used as the main emulsifier, the amount is typically between 2% and 8%. Compounding with anionic surfactants (such as Emulsifier 500, calcium salts, etc.) can achieve better synergistic effects.