
Epoxy resin (E51)
Item: Epoxy resin (E51)
Chemical name: Diglycidyl ether of Bisphenol A
CAS: 61788-97-4
Package: 240kg per drum
Origin: Made in China
Product Introduction
Nanjing Chem Co.,Ltd is one of the leading Epoxy resin E51 suppliers and also a professional such epoxy resin manufacturer in China.Epoxy resin E51 is widely used in various application such as adhesive, paint, etc.
Product Overview of Epoxy Resin E51
Epoxy Resin E51 is a standard bisphenol A type liquid epoxy resin with low viscosity, high epoxy equivalent and excellent curing performance, widely recognized as the mainstream base raw material in the global coatings and composite industry.
Our factory independently produces high-stability Epoxy Resin E51 with strict full-process quality control. The finished resin features uniform molecular distribution, low free bisphenol A content, strong adhesion to metal, glass fiber, carbon fiber, concrete and plastic substrates. After matching corresponding curing agents and reactive diluents, it forms cured films and composite parts with outstanding mechanical strength, corrosion resistance, chemical resistance and insulation properties.
Suitable for mass bulk export to paint factories, composite material manufacturers, construction material enterprises, electronic insulation material producers and overseas chemical distributors across Southeast Asia, Europe, Middle East and South America.
Core Advantages of Our E51 Epoxy Resin
- Stable batch consistency: Strict online monitoring during synthesis, no large fluctuation of epoxy value between batches;
- Low impurity & low volatile content, compliant with international industrial environmental protection standards;
- Excellent compatibility with amine curing agents, aliphatic diluents, pigments and fillers;
- Balanced viscosity for easy mixing, spraying, pouring and hand lay-up composite molding processes;
- Factory direct supply without middlemen, flexible MOQ and long-term stable bulk delivery capacity;
- Customizable technical formula adjustment supported by professional R&D team for special industry demands.
Complete Technical Specifications of Epoxy Resin E51
| Test Item | Standard Index | Test Method |
|---|---|---|
| Appearance | Colorless to light yellow transparent viscous liquid | Visual inspection |
| Epoxy Equivalent Weight (EEW) | 184–194 g/eq | GB/T 1672-2008 |
| Viscosity (25℃, mPa·s) | 11000–14000 | Rotational viscometer |
| Hydrolyzable Chloride | ≤0.1 wt% | Titration method |
| Total Chloride | ≤0.3 wt% | Titration method |
| Moisture Content | ≤0.1 wt% | Karl Fischer method |
| Density (25℃) | 1.16–1.17 g/cm³ | Hydrometer |
| Storage Shelf Life | 12 months under sealed normal temperature | Factory test standard |
Wide Industrial Applications of Epoxy Resin E51
Usage in Protective & Industrial Coatings
- Anti-corrosion epoxy floor coatings for factory workshops, parking lots and industrial plants
- Metal anti-rust primer, pipeline anti-corrosion coating, marine heavy anti-corrosion paint
- Electronic insulation varnish, circuit board protective coating
- Epoxy anti-slip, wear-resistant self-leveling floor paint
- Water-based epoxy coating intermediate raw material
Usage in Fiber Reinforced Composite Products
- Glass fiber / carbon fiber composite parts for machinery, auto spare parts and new energy equipment
- Hand lay-up, pultrusion and filament winding composite matrix resin
- Construction reinforcement composite profiles, FRP pipeline lining material
- Insulation composite sheets for electrical power industry
- Casting resin for craft, mold and electronic encapsulation
Our Professional Epoxy Resin Manufacturing Factory Strength

Production Scale & Team Configuration
Our production base covers an area of 100 acres, equipped with complete continuous synthesis production lines, automatic filtration and filling workshops, independent quality testing laboratory and raw material storage warehouse.
The factory has a total of 150 full-time employees, including 30 professional technical engineers engaged in formula optimization, production process control and after-sales technical service. Our technical team can provide one-stop formulation matching guidance for customers’ coating and composite production lines.
R&D Cooperation & Green Chemical Technology Research
- Green low-carbon synthesis process improvement of epoxy resin, curing agent and diluent series products;
- Product purity upgrading, reduction of harmful by-products and volatile substances;
- Complete set of treatment solutions for production wastewater and solid waste to lower environmental operating costs for our factory and meet global export environmental standards;
- Development of low-toxicity, low-VOC modified E51 epoxy resin variants for high-end environmental protection coating markets.
All production links follow closed-loop waste recovery procedures to ensure our products meet EU REACH, RoHS and other international chemical export compliance requirements.
Packaging, Storage & Transportation Instructions

- Standard packaging: 220L iron drum net weight 220kg; IBC tote tank 1000kg for bulk order;
- Storage condition: Sealed storage in dry, cool and ventilated warehouse, avoid direct sunlight and freezing environment;
- Transportation: Classified as ordinary industrial chemical liquid, suitable for sea freight, land truck transportation; we provide complete MSDS, COA, customs declaration documents for export clearance;
- Shelf life: 12 months from production date under proper storage, stir evenly before use if slight stratification occurs.



