PEG 4000 (Polyethylene Glycol 4000) – CAS 25322-68-3 for Rubber

PEG 4000 Polyethylene Glycol 4000 solid flakes industrial grade
Product Overview

PEG 4000 (Polyethylene Glycol 4000) is a water-soluble linear polyether polymer produced by the polymerization of ethylene oxide, with an average molecular weight of approximately 4000 g/mol. It is supplied as a solid or flake material at ambient conditions and is widely used across rubber, coatings, resin, urethane, and chemical processing industries.

PEG 4000 functions as a binder, dispersant, emulsifier, polyol for urethane systems, lubricant, and intermediate for organic synthesis. Due to its hydroxyl functionality and controlled molecular weight distribution, it is suitable for use in resin modification, elastomer processing, and specialty formulations.

This material is biologically inert in general industrial usage and is available in standard 25 kg packaging, with smaller repacked quantities for laboratory and R&D requirements.

Common Names
  • Polyethylene Glycol 4000
  • PEG-4000
  • Polyoxyethylene (average MW 4000)
  • Polyethylene Oxide (average molecular weight 4000)
Technical Specifications
Parameter Specification
Appearance (25°C) Solid / Flake
Average Molecular Weight (g/mol) 3700 – 4300
CAS No. 25322-68-3
Color (APHA at 50–60°C) ≤ 80 / ≤ 50 (as per grade)
pH (1% solution) 5.0 – 7.5
Hydroxyl Value (mg KOH/g) 26.0 – 30.3
Water Content (%) 0.3 Max
Specific Gravity (20°C) 1.087 – 1.097

The above specifications are provided for reference purposes only. For precise and up-to-date technical details, please contact our marketing team.

Key Benefits
  • Water-soluble polymer suitable for diverse formulations
  • Provides controlled hydroxyl functionality for urethane systems
  • Supports dispersion and emulsification in coatings and resin systems
  • Acts as processing aid and lubricant in rubber compounding
  • Compatible with various resin and elastomer systems
Applications
  • Rubber and elastomer processing
  • Urethane elastomer systems (as polyol component)
  • Paints and coatings formulations
  • Printing inks
  • Resin modification and additive systems
  • Organic synthesis intermediate
  • Ointment and lubricant base (industrial grade usage)
Recommended Dosage

Dosage depends on specific formulation design and end-use application. In urethane systems, PEG 4000 is used based on hydroxyl value and stoichiometric calculations. In rubber and coating formulations, usage levels vary according to processing requirements and compatibility testing.

Recommended dosage may vary based on formulation and processing conditions. Users should verify dosage before commercial use.

Available Pack Sizes
  • Standard Pack: 25 kg bags
  • Repacked: 1 kg (Specially for trial and R&D)

We deliver pan-India and have tie-ups with all major couriers & transporters to ensure timely dispatch.

Storage Conditions
  • Store in original, sealed packaging.
  • Keep in a dry area away from moisture and direct sunlight.
  • Maintain normal ambient temperature conditions.
  • Close containers tightly after use.
  • Refer to SDS for detailed safety and handling information.
Related Products and Citations

Data compiled from official Technical Datasheets including:

  • PEG-4000-TDS.pdf
  • PEG-4000Hannong-TDS-1.pdf

We are independent dealers and are not associated with the manufacturer. The information provided is compiled from official manufacturer datasheets and independent research. Users must evaluate product suitability and applicability before use.

Summary

Lab Line Enterprises is an ISO 9001:2015 certified supplier of industrial chemicals serving rubber, polymer, coating and adhesive manufacturers across India. PEG 4000 is regularly supplied to customers in Mumbai, Delhi NCR, Faridabad, Ahmedabad, Chennai, Hyderabad, Bengaluru and Kolkata for rubber compounding, urethane systems and resin applications. We offer standard 25 kg packaging along with small pack sizes (1 kg / 5 kg) for trials and R&D validation. All material is supplied with relevant TDS and SDS documentation upon request. Logistics support is available across India through established courier and transporter networks.

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