PEG400DL (polyethylene glycol dilaurate, CAS No.: 9005-02-1) appears as a light yellow to yellow liquid and belongs to the nonionic surfactant category. Its molecular structure is obtained through the esterification of polyethylene glycol 400 and lauric acid, combining both hydrophilic and lipophilic properties, exhibiting excellent comprehensive performance in various formulation systems.
The most prominent performance characteristic of this product is its high emulsifying ability — it effectively reduces oil-water interfacial tension, forming stable and fine emulsions suitable for various oil phase systems. It also possesses excellent dispersing and solubilizing properties, significantly improving the dispersion uniformity and solubility of insoluble substances in the medium, thereby enhancing formulation stability. Its low foaming characteristic is particularly notable in practical applications, with low foam volume and easy rinsing, making it especially suitable for industrial cleaning and metalworking fluid systems. Additionally, the product maintains stable performance in acidic, alkaline, and hard water media without easy decomposition or failure.
From a safety perspective, PEG400DL is a non-hazardous substance with extremely low acute oral toxicity (rat LD₅₀ > 5,000 mg/kg), non-irritating to the skin, and only causing mild, reversible eye irritation. It also exhibits ready biodegradability (OECD 301F, 28-day degradation > 60%), meeting modern product requirements for environmental friendliness and occupational health.
| Parameter Item | Specification |
|---|---|
| Product Name | PEG400DL (Polyethylene Glycol Dilaurate) |
| CAS No. | 9005-02-1 |
| Product Type | Nonionic Surfactant |
| Appearance | Light yellow to yellow liquid (clear to slightly turbid) |
| Flash Point (Closed Cup) | > 250 °C |
| Acute Oral Toxicity (Rat LD₅₀) | > 5,000 mg/kg |
| Skin Irritation | Non-irritating |
| Eye Irritation | Mild irritation, reversible within 72 hours |
| Mutagenicity (Ames Test) | Negative |
| Aquatic Toxicity | Low toxicity, LC₅₀/EC₅₀ > 100 mg/L |
| Biodegradability | Readily biodegradable (28 days > 60%) |
| Recommended Storage Temperature | 5 °C to 40 °C |
With its balanced molecular structure and multifunctional properties, PEG400DL is widely applicable in various industries:
At low temperatures, the product may become turbid or solidify; this is a normal physical phenomenon and does not affect product quality. After returning to room temperature, stir slowly and evenly before use. Seal the container promptly after use to prevent moisture absorption or contamination. It is recommended to wear protective goggles and chemical-resistant gloves (e.g., nitrile gloves) during handling and maintain good ventilation.