Epoxy resin (E51)

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

  1. Stable batch consistency: Strict online monitoring during synthesis, no large fluctuation of epoxy value between batches;
  2. Low impurity & low volatile content, compliant with international industrial environmental protection standards;
  3. Excellent compatibility with amine curing agents, aliphatic diluents, pigments and fillers;
  4. Balanced viscosity for easy mixing, spraying, pouring and hand lay-up composite molding processes;
  5. Factory direct supply without middlemen, flexible MOQ and long-term stable bulk delivery capacity;
  6. 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

Epoxy Resin E51 acts as the fundamental film-forming and matrix resin material, covering two major core downstream industries: coatings and fiber composites.

Usage in Protective & Industrial Coatings

  1. Anti-corrosion epoxy floor coatings for factory workshops, parking lots and industrial plants
  2. Metal anti-rust primer, pipeline anti-corrosion coating, marine heavy anti-corrosion paint
  3. Electronic insulation varnish, circuit board protective coating
  4. Epoxy anti-slip, wear-resistant self-leveling floor paint
  5. Water-based epoxy coating intermediate raw material

Usage in Fiber Reinforced Composite Products

  1. Glass fiber / carbon fiber composite parts for machinery, auto spare parts and new energy equipment
  2. Hand lay-up, pultrusion and filament winding composite matrix resin
  3. Construction reinforcement composite profiles, FRP pipeline lining material
  4. Insulation composite sheets for electrical power industry
  5. Casting resin for craft, mold and electronic encapsulation

Our Professional Epoxy Resin Manufacturing Factory Strength

photos of Chinese factory producing Epoxy resin E51

We are a professional Chinese manufacturer focusing on the R&D and mass production of epoxy resin, matched curing agents and reactive diluents, serving global industrial chemical purchasers with stable, eco-friendly and cost-effective raw materials.

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

We maintain long-term stable cooperative research relations with multiple domestic scientific research institutes and universities. Joint research directions include:
  1. Green low-carbon synthesis process improvement of epoxy resin, curing agent and diluent series products;
  2. Product purity upgrading, reduction of harmful by-products and volatile substances;
  3. 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;
  4. 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

photos of export packaging of Epoxy resin E51

  1. Standard packaging: 220L iron drum net weight 220kg; IBC tote tank 1000kg for bulk order;
  2. Storage condition: Sealed storage in dry, cool and ventilated warehouse, avoid direct sunlight and freezing environment;
  3. 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;
  4. Shelf life: 12 months from production date under proper storage, stir evenly before use if slight stratification occurs.

6. FAQ

Q1: What is Epoxy Resin E51 mainly used for?

A1: E51 bisphenol A epoxy resin is mainly used as core raw material for various industrial protective coatings and fiber-reinforced composite materials, widely applied in floor paint, metal anti-corrosion coating, FRP composite, electronic insulation casting and construction reinforcement materials.

Q2: Can your factory supply customized modified E51 epoxy resin?

A2: Yes. Our 30-person technical team, together with university research laboratories, can adjust viscosity, epoxy value and low-VOC performance according to your downstream production process, to match your exclusive coating or composite formula requirements.

Q3: What supporting materials can you provide together with E51 epoxy resin?

A3: We support one-stop matching supply of matched amine curing agents, active diluents, pigments and fillers, all produced in our own factory, which can greatly reduce your multi-supplier procurement cost.

Q4: What export compliance documents can you offer for customs clearance?

A4: We can provide full sets of export documents including COA (Certificate of Analysis), MSDS, commercial invoice, packing list, certificate of origin, and test reports meeting REACH, RoHS standards upon request.

Q5: What is your factory delivery capacity for bulk Epoxy Resin E51 orders?

A5: With 100-acre production base and automated production lines, we support stable monthly bulk supply, and can arrange priority shipment for long-term contract customers to avoid raw material shortage risks.

Q6: Does your factory adopt eco-friendly production technology?

A6: We cooperate with many scientific research institutions and universities to continuously upgrade green production processes for epoxy resin, curing agents and diluents. We have complete wastewater and solid waste recycling treatment systems to realize low-carbon clean production, and all products pass international environmental testing standards.

Q7: What is the shelf life of your Epoxy Resin E51?

A7: 12 months under sealed, cool and dry storage environment. If stored properly beyond the shelf life, re-test the epoxy value before production use.

Related Products