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Propylene Glycol Block Polyether L42 (CAS: 9003-11-6) - Low Toxicity for Agrochemical Formulations

Name: Propylene Glycol Block Polyether L42 (CAS: 9003-11-6) - Low Toxicity for Agrochemical Formulations
Brand: Jienuo
Rating: 5.0 (47 reviews)

Propylene Glycol Block Polyether L42 (CAS 9003-11-6) is a non-ionic, water-soluble block copolymer (polyoxyethylene-polyoxypropylene). It appears as a colorless to yellowish transparent liquid (25℃) with key specs: viscosity (25℃) 40–50 mPa·s, pH 5.0–7.0, HLB value 8. As a high-performance surfactant, it excels in emulsification, dispersion, and stability, serving diverse industrial scenarios.

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Model:
L42
Brand:
Jienuo

Product Description

Propylene Glycol Block Polyether L42(CAS 9003-11-6): Overview

Propylene Glycol Block Polyether L42 (CAS 9003-11-6, also called PPG/PEO-PPO block polyether) is an industrial-grade, water-soluble surfactant & emulsifier. It acts as a high-efficiency dispersant, stabilizer, and wetting agent, widely applied in pesticide formulations, coatings, inks, and emulsion polymerization. With low toxicity, low viscosity, and excellent compatibility, it enhances product stability and processing performance. Suitable for technical/agrochemical/industrial scenarios, it meets strict quality standards for diverse manufacturing needs.

Product Advantage

Excellent Basic Properties & Stability
L42 boasts precise technical parameters: viscosity (25℃) 40–50 mPa·s, water content ≤1.0%, and pH 5.0–7.0 (1% aqueous solution). Its non-ionic nature ensures strong compatibility with other additives, maintaining consistent performance across temperature and pH fluctuations—ideal for long-term formulation stability.
Strong Emulsification & Dispersion Capacity
As a high-efficiency emulsifier and dispersant, L42 uniformly disperses insoluble components in systems (e.g., pesticide active ingredients), preventing aggregation. Its HLB value of 8 balances lipophilic-hydrophilic properties, enabling stable emulsion formation that reduces product stratification risks in storage.
Low Toxicity & Wide Adaptability
With low toxicity and mild properties, L42 meets industrial safety standards for agrochemical and industrial applications. It works effectively in both acidic and neutral systems, adapting to diverse production processes (e.g., emulsion polymerization, coating blending) without causing equipment corrosion or product contamination.

Technical Specifications

Parameter	Specification
Chemical Composition	Polyoxyethylene-polyoxypropylene block copolymer
Ionic Type	Non-ionic
Appearance (25℃)	Colorless to pale yellow transparent liquid
Viscosity (25℃)	40–50 mPa·s
Cloud point (1% Aqueous Solution)	34–45
Water Content	≤1.0%
pH Value (1% Aqueous Solution)	5.0–7.0
HLB Value	8
Flash Point	≥150℃
Density (25℃)	1.01–1.03 g/cm³
Compatibility	Compatible with most non-ionic/anionic surfactants
Storage Stability	Stable for 12 months (sealed, dry & ventilated conditions)

Product Uses

Pesticide Formulations
L42 acts as an emulsifier in pesticide formulations, helping dissolve and disperse active ingredients to enhance pesticide stability and efficacy. It prevents sedimentation during storage, ensuring uniform drug release when diluted, which improves the pesticide's adhesion to crop surfaces.
Textile Antistatic Finishing
In textile processing, L42 serves as an antistatic agent for synthetic fibers. It forms a protective film on fiber surfaces to reduce static buildup, enhancing fabric comfort and processing efficiency (e.g., reducing winding static during spinning).
Emulsion Polymerization
L42 is used as a stabilizer in emulsion polymerization (e.g., for acrylic emulsions). It controls particle size distribution of polymers, improving emulsion stability and the mechanical properties of the final polymer products (e.g., coatings, adhesives).

Product Operate Guide

For general applications: Dilute L42 with water (or the base material of the system) to a 5–10% concentration first, then add it to the target system while stirring (stir speed: 100–200 rpm) until fully mixed. Adjust the dosage (typically 0.5–3% of the total formulation) based on specific scenarios (e.g., 1–2% for pesticide emulsions, 2–3% for textile antistatic finishing).

FAQ

What is the shelf life of L42?
When stored in sealed packaging (200kg/50kg drum) in a dry, ventilated area (avoid direct sunlight), L42 has a shelf life of 12 months. Do not use it if stratification occurs (agitate evenly before use if slight stratification happens).
Is L42 compatible with ionic surfactants?
Yes. As a non-ionic surfactant, L42 has good compatibility with most anionic/cationic surfactants. It is recommended to test small batches first when mixing with new additives to ensure system stability.
Can L42 be used in food-related applications?
No. L42 is an industrial-grade product and is not suitable for food, pharmaceutical, or cosmetic applications. It is designed for industrial scenarios like pesticides, textiles, and coatings.