According to product data from Hai'an Guoli Chemical Co., Ltd., the antistatic agent MOA3PK-70 (chemical composition: fatty alcohol polyoxyethylene (3) ether phosphate ester potassium salt) is a light yellow to yellow transparent liquid at room temperature. The product has a high active content (≥70%) and maintains chemical stability over a wide pH range (1% aqueous solution pH 5.0~7.0, 5% aqueous solution pH 6.0~8.0), which allows it to maintain good adaptability in processing environments for different substrates such as plastics and fibers.
From physical properties, its density is about 1.05 g/cm³, and its kinematic viscosity is relatively high (≥200 mm²/s), which facilitates uniform dispersion during resin melt processing without easy separation. As an anionic surfactant, its HLB value is about 4.5, and its surface tension at 1% aqueous solution at 25°C is 30-35 mN/m, demonstrating excellent wetting and interfacial adsorption capabilities. Particularly noteworthy is the product's low free phosphoric acid content (≤1.0%) and high monoester content (≥60%), which play a decisive role in its antistatic durability and resin compatibility.
In terms of safety physicochemical indicators, its flash point (closed cup) is greater than 100°C, making it non-flammable, but it has strong hygroscopicity and requires sealed storage. Since the product structure primarily consists of C12-14 fatty alcohol chains, its iodine value is extremely low (≤2.0) with low chemical unsaturation, making it less prone to oxidation discoloration during use, ensuring the cleanliness of the final product appearance.
| Parameter Item | Indicator/Value | Remarks |
|---|---|---|
| Chemical Name | Fatty Alcohol Polyoxyethylene (3) Ether Phosphate Potassium Salt | — |
| CAS Number | 39322-78-6 | — |
| Appearance (25°C) | Light Yellow to Yellow Transparent Liquid | Visual Inspection |
| Ionic Type | Anionic | — |
| Active Content | ≥70% | — |
| Water Content | ≤30% | — |
| pH Value (1% Aqueous Solution) | 5.0 ~ 7.0 | 25°C |
| pH Value (5% Aqueous Solution) | 6.0 ~ 8.0 | 25°C |
| Density (25°C) | Approximately 1.05 g/cm³ | — |
| Kinematic Viscosity (25°C) | ≥200 mm²/s | — |
| Refractive Index (20°C) | 1.440 ~ 1.450 | — |
| Flash Point (Closed Cup) | >100°C | — |
| HLB Value | ~4.5 | — |
| Surface Tension (1% Aqueous Solution, 25°C) | 30 ~ 35 mN/m | — |
| Critical Micelle Concentration (CMC) | Approximately 1.0×10⁻⁴ mol/L | — |
| Acid Value | ≤5 mgKOH/g | — |
| Iodine Value | ≤2.0 | Low Unsaturation |
| Hydroxyl Value | ~155 mgKOH/g | — |
| Monoester Content | ≥60% | — |
| Diester Content | ≤20% | — |
| Free Phosphoric Acid (as P₂O₅) | ≤1.0% | — |
| Free Alcohol Content | ≤5% | — |
| Combined Phosphorus (as P₂O₅) | Approximately 10% ~ 15% | — |
| Heavy Metal Content | ≤10 mg/kg | — |
| Arsenic Content | ≤2 mg/kg | — |
| Foam Characteristics | Low Foam | — |
| Solubility | Easily Soluble in Oil and Water | — |
| Chemical Stability | Acid and Alkali Resistant, Hard Water Resistant | — |
| Hygroscopicity | Hygroscopic | Requires Sealed Storage |
(Data source: Product database of Hai'an Guoli Chemical Co., Ltd.)
Based on its low HLB value of about 4.5 and high monoester content, this product is particularly suitable as an internal additive antistatic agent for polymer materials. In plastic modification (e.g., PE, PP, ABS), the recommended addition amount is typically 0.5% ~ 2.0%, and the specific dosage should be adjusted according to the target surface resistance value. In synthetic fiber spinning oils, MOA3PK-70, with its excellent emulsifying and smoothing properties, can significantly reduce fluff and breakage of fibers such as polyester and nylon, and is recommended as a core component to be used in combination with other smoothing agents or emulsifiers.