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L81
Jienuo
Propylene Glycol Block Polyether L81 (CAS 9003-11-6) is a premium nonionic polyether surfactant renowned for exceptional emulsification, dispersion, and wetting capabilities. With high water solubility, low toxicity, and stable performance across pH 5.0~7.0 , it's widely used in pesticide formulations, coatings, textile dyeing, and industrial cleaning. Its unique PEO-PPO block structure ensures strong compatibility with other chemicals, reducing foam and enhancing product uniformity. Manufactured via precision polymerization, it meets industrial-grade standards with consistent batch quality, making it a cost-effective, reliable auxiliary for global B2B clients seeking multifunctional polyether solutions for bulk applications.
Product Advantage
Stable Technical Performance: It maintains consistent quality (1% aqueous solution cloud point ＞150℃, pH 5.0–7.0) across batches, supported by 10+ years of production data—ensuring 99% formulation compatibility in industrial applications.
Efficient Defoaming & Emulsification: Its low HLB value (2.5) delivers strong defoaming effects (reducing foam by 85% in metalworking fluids) while acting as a high-performance emulsifier for pesticide concentrates.
Broad Environmental Adaptability: It performs stably in neutral systems (pH 5.0–7.0) and resists degradation in harsh conditions, with a 12-month shelf life when stored properly.
Cost-Effective Multi-Functionality: Integrates emulsification, defoaming, and dispersion in one product, cutting auxiliary costs by 30% compared to single-function alternatives.
Technical Specifications
Index | Specification |
Name | Propylene glycol block polyether L81 |
Appearance (25℃) | Light yellow to yellowish white waxy solid |
Cloud Point (1% aqueous solution) | ＞100℃ |
Moisture | ≤1.0% |
pH Value (1% aqueous solution) | 5.0~7.0 |
HLB Value | 2.5 |
Chemical Composition | Polyethylene oxide-polypropylene oxide block copolymer |
Type | Nonionic |
Product Uses
Pesticide Formulations: Acts as a high-efficiency emulsifier for pesticide concentrates, enhancing the stability and spreading ability of liquid pesticides to boost pest control efficacy.
Metal Processing: Serves as a defoaming agent in metalworking fluids, preventing air entrapment during machining to reduce surface defects on workpieces.
Coatings & Inks: Functions as a dispersant in coating systems, ensuring uniform pigment distribution and improving the adhesion of the final coating.
For pesticide emulsification: Add 5–8% L81 to the pesticide concentrate, then stir at 100–150 rpm for 10–15 minutes until fully mixed. For metalworking fluids: Blend 2–3% L81 into the base fluid and agitate gently. Adjust dosage based on specific formulation needs.
FAQ
What is the shelf life of L81?
It has a 12-month shelf life when stored in a cool, dry, ventilated area (avoid direct sunlight and moisture).
Is L81 compatible with acidic systems?
It performs stably in neutral (pH 5.0–7.0) systems; avoid strong acidic/alkaline environments to maintain performance.
Can L81 be used in food applications?
No, it is an industrial-grade product and not suitable for food, pharmaceutical, or cosmetic uses.
