MOA-9P is an anionic phosphate surfactant derived from the phosphate esterification of laureth, possessing dual characteristics of both nonionic and anionic surfactants, widely used in personal care, textiles, metalworking, pesticides, and other fields.
Detailed Description
MOA-9P (CAS number: 39464-66-9), with the chemical name laureth phosphate, also known as laureth phosphate, AEO-9 phosphate, dodecyl polyoxyethylene ether phosphate, laureth-9 phosphate, etc. It appears as a colorless to light yellow transparent liquid, prepared by the phosphate esterification of laureth (AEO-9), belonging to the class of anionic phosphate surfactants.
The most significant feature of MOA-9P is its dual performance of nonionic and anionic surfactants. On one hand, the polyoxyethylene ether chain provides excellent resistance to acids, alkalis, and hard water, maintaining stable performance over a wide pH range and under high hardness water conditions, without deactivation or precipitation. On the other hand, the phosphate ester group offers outstanding emulsification, wetting, dispersion, extreme pressure lubrication, and anti-rust properties, significantly reducing interfacial tension and promoting uniform distribution of active ingredients in the formulation.
Regarding safety, MOA-9P has low acute toxicity (rat oral LD₅₀ > 2000 mg/kg), low toxicity to aquatic organisms, and is readily biodegradable (28-day degradation rate > 80%). However, it should be noted that it has moderate skin irritation (rabbit PII: 2.0–4.0) and can cause moderate to severe eye damage. Appropriate protective measures should be taken during handling.
Technical Parameters
| Parameter | Description |
|---|
| Product Name | MOA-9P Laureth Phosphate |
| CAS Number | 39464-66-9 |
| Aliases | Laureth Phosphate, AEO-9 Phosphate, Dodecyl Polyoxyethylene Ether Phosphate, Laureth-9 Phosphate, Laureth-9 Phosphate |
| Product Type | Anionic Phosphate Surfactant |
| Appearance | Colorless to light yellow transparent liquid |
| Acute Toxicity | Rat Oral LD₅₀ > 2000 mg/kg (Low toxicity) |
| Skin Irritation | Moderate irritation (Rabbit PII: 2.0–4.0) |
| Eye Irritation | Moderate to severe irritation, may cause corneal damage |
| Sensitization | No skin sensitization observed |
| Biodegradability | Readily biodegradable, 28-day degradation rate > 80% (OECD 301B) |
| Ecototoxicity | Low toxicity to aquatic organisms (Zebra fish 96h LC₅₀ > 100 mg/L) |
Application Recommendations
Thanks to its excellent comprehensive performance, MOA-9P has been widely used in multiple industries:
- Personal Care Products: Used as a superfatting agent and emulsifier in high-end shampoos, body washes, and facial cleansers, providing a gentle cleansing sensation and moisturizing skin feel, and giving the product a fine and rich foam texture.
- Textile Industry: Serves as a key component in synthetic fiber spinning oils, offering antistatic and softening finishing functions, imparting a soft and smooth hand feel to fabrics.
- Leather Processing: Used as a fatliquor and penetrating agent, promoting uniform penetration of oils into the leather, making finished leather soft and plump, and improving physical strength and water resistance.
- Metalworking Fluids: Acts as an extreme pressure lubricating additive and anti-rust component, suitable for cutting fluid and grinding fluid formulations, providing boundary lubrication protection and preventing workpiece rusting.
- Pesticide Formulations: Used as an emulsifying dispersant to improve the stability of pesticide emulsifiable concentrates and suspension concentrates, and enhance field application efficacy.
- Emulsion Polymerization: Applied in emulsion polymerization systems such as acrylic and styrene-acrylic, stabilizing monomer droplets and polymer latex particles, and helping to control particle size and reaction process.
Precautions
- Always wear chemically resistant gloves, safety goggles, and protective clothing during handling to avoid direct skin and eye contact.
- Use in a well-ventilated area, and employ local exhaust ventilation if necessary.
- Storage temperature is recommended to be controlled between 5℃ and 35℃, keep containers tightly closed, and avoid direct sunlight and high temperatures.
- Keep away from strong oxidizers, strong acids, and other incompatible substances.
- Dispose of waste in accordance with hazardous waste management regulations through qualified disposal units, and do not discharge into sewers or water bodies.
