PEG400DL (Polyethylene Glycol Dilaurate, CAS number: 9005-02-1) is a high-performance nonionic surfactant produced by Guoli Chemical. Its molecular structure consists of a polyethylene glycol chain segment with a polymerization degree of about 9, bonded with two molecules of lauric acid via esterification, with a molecular weight of approximately 400, giving the product a balanced hydrophilic-lipophilic characteristic. The product appears as a colorless to slightly yellow viscous liquid, with an active content ≥99%, and is well soluble in polar solvents such as water, ethanol, and acetone.
In terms of performance, PEG400DL has an HLB value of about 20, leaning towards the hydrophilic side, which gives it efficient O/W emulsifying ability, significantly reducing the oil-water interfacial tension to form stable and fine emulsions. At the same time, the product exhibits low foaming characteristics, with low foam volume in practical applications and easy rinsing, making it particularly suitable for industrial cleaning and metalworking fluid systems. Its chemical stability is good, maintaining stable performance in conventional acid, alkali, and hard water media, and it is not easily decomposed or deactivated. It is non-irritating to the skin, with only mild reversible irritation to the eyes, and has excellent biodegradability (degradation rate >60% in 28 days under OECD 301F standard), making it an environmentally friendly product.
As a multifunctional additive, PEG400DL also has auxiliary functions such as solubilizing, skin conditioning, antistatic, and pigment wetting and dispersing in formulations. It can effectively improve the dispersion uniformity of difficult-to-dissolve substances and the storage stability of the system, making it an indispensable key component in many fine chemical formulations.
| Parameter Item | Specification |
|---|---|
| Chemical Name | Polyethylene Glycol (400) Dilaurate |
| CAS Number | 9005-02-1 |
| Molecular Formula | H(OCH2CH2)nOH, n≈9 |
| Molecular Weight | Approximately 400 |
| Ionic Type | Nonionic |
| Appearance | Colorless to slightly yellow viscous liquid |
| Active Content | ≥99% |
| HLB Value | About 20 |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| pH Value (5% Aqueous Solution) | 4.5~7.5 |
| Hydroxyl Value | 264~290 mgKOH/g |
| Acid Value | ≤1.0 mgKOH/g |
| Saponification Value | ≤1.0 mgKOH/g |
| Iodine Value | ≤1.0 |
| Moisture Content | ≤0.5% |
| Density (25℃) | 1.11~1.13 g/cm³ |
| Kinematic Viscosity (40℃) | 90~110 mm²/s |
| Low Shear Viscosity (25℃) | 100~200 mPa·s |
| Refractive Index | 1.466~1.468 |
| Flash Point | >200℃ (Closed Cup) |
| Melting Point | <5℃ |
| Surface Tension | Approximately 60 mN/m |
| Solubility | Easily soluble in water, ethanol, acetone |
| Foaming Characteristics | Low foam |
| Heavy Metals | ≤10 mg/kg |
| Arsenic | ≤2 mg/kg |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum |
Cosmetics and Personal Care Products: As a solubilizer, auxiliary emulsifier, and skin conditioning component, used in formulations of creams, lotions, shampoos, and body washes to enhance product transparency and skin feel, while adjusting system viscosity. Recommended for O/W emulsion systems, with dosage adjusted according to formulation needs, typically 1%~5%.
Industrial Cleaners and Metalworking Fluids: Leveraging its low foaming property and excellent lubricating ability, suitable for formulating high-efficiency industrial hard surface cleaners and metal cutting/grinding fluids, combining cleaning power and equipment protection. Especially suitable for high-pressure spray cleaning scenarios, effectively controlling foam while ensuring cleaning effectiveness.
Textile and Leather Auxiliaries: Can be used as an antistatic agent, softening finishing agent, and leveling agent, improving the feel and processing uniformity of fibers and leather, reducing static electricity buildup, and ensuring color consistency during dyeing.
Pesticide Formulations: Acts as an emulsifying and dispersing component, helping active ingredients to be uniformly suspended or emulsified in water-based media, improving the wetting and spreading properties of the spray solution and field efficacy.
Coatings and Inks: Used as a pigment wetting dispersant and leveling agent, enhancing color uniformity and system storage stability, promoting smooth and defect-free film formation, avoiding surface defects such as craters.