Emulsifier A-105 (CAS No.: 9004-96-0), with the chemical name Oleth and alias Oleyl alcohol polyoxyethylene ether, has the molecular formula C18H35O(CH2CH2O)nH and a molecular weight of approximately 398. This product belongs to non-ionic surfactants, appearing as a colorless to pale yellow transparent liquid with slight hygroscopicity. Its hydrophilic-lipophilic balance value (HLB value) is 10.5, cloud point range 61~67°C, easily soluble in water, chemically stable under normal conditions, and has good alkali resistance.
The product has high active content (≥99%), low residual free alcohol (≤1%), and contains unsaturated double bonds in the molecular structure (iodine value 75~85), giving it excellent interfacial activity. Its surface tension is as low as 27~30 mN\/m, critical micelle concentration (CMC) is approximately 25 mg\/L, foaming is moderate, and penetration force is less than 30 units (data source: Guoli Chemical Product Database). The pH values of 1% and 5% aqueous solutions are both 6.0~8.0, which is near neutral and has little effect on the pH of the formulation system.
In terms of safety and environmental indicators, the flash point (closed cup) of this product is >150°C, not flammable; acute oral toxicity LD₅₀ >2000 mg\/kg, classified as low toxicity; toxic to aquatic organisms (fish LC₅₀ 1-10 mg\/L), and biodegradation rate is relatively slow, so strict control of water discharge is required during use. Heavy metal content ≤10 ppm, arsenic content ≤2 ppm, meeting the quality requirements of fine chemicals.
The following is a complete table of physicochemical technical parameters of Emulsifier A-105 (data source: Guoli Chemical Product Database):
| Parameter Name | Technical Indicator | Remarks |
|---|---|---|
| Chemical Name | Oleth (Oleyl alcohol polyoxyethylene ether) | Alias: Polyoxyethylene oleyl ether |
| CAS No. | 9004-96-0 | — |
| Molecular Formula | C18H35O(CH2CH2O)nH | — |
| Molecular Weight | Approximately 398 | Varies with EO number |
| Ionic Type | Non-ionic | — |
| Appearance (25°C) | Colorless to pale yellow transparent liquid | — |
| Active Content | ≥99% | Solid content |
| HLB Value | 10.5 | Hydrophilic-lipophilic balance value |
| Cloud Point | 61~67°C | 1% aqueous solution |
| pH Value (1% aqueous solution) | 6.0~8.0 | 25°C |
| pH Value (5% aqueous solution) | 6.0~8.0 | 25°C |
| Density | 1.05~1.07 g\/cm³ | 25°C |
| Kinematic Viscosity | 150~250 mm²\/s | 25°C |
| Refractive Index | 1.455~1.460 | 25°C |
| Surface Tension | 27~30 mN\/m | 1% aqueous solution |
| Critical Micelle Concentration (CMC) | Approximately 25 mg\/L | — |
| Hydroxyl Value | 83~93 mgKOH\/g | — |
| Iodine Value | 75~85 gI₂\/100g | Contains unsaturated double bonds |
| Acid Value | ≤0.5 mgKOH\/g | — |
| Moisture Content | ≤0.5% | — |
| Free Alcohol | ≤1% | — |
| Melting Point | <0°C | — |