- Assay (Epoxy Equivalent): 165–182 g/eq (varies by grade; 176–181 g/eq for D.E.N. 438; 172–179 g/eq for EPN 1179)[1][4]
- Appearance: Colorless transparent liquid or pale yellow bead-like solid, no obvious impurities
- Epoxy Group Content: 3.6 epoxy groups per molecule (typical value)[1]
- Loss on Drying: ≤0.5%
- Residue on Ignition: ≤0.1%
- Total Chlorine Content: ≤1200 ppm (low-halogen grade ≤900 ppm)[4]
- Color (APHA): ≤50[4]
- Average Molecular Weight (Mn): ~345 to ~570 (commercially available products)[1]
- Viscosity: Consistent with product grade requirements (e.g., 31000–40000 cps at 51.7 ℃ for D.E.N. 438)[1][4]
- Identification: Positive by IR and Raman spectroscopy detection[1]
Applications
CAS 28064-14-4 is a key phenolic novolac epoxy resin, with high functionality, good thermal stability and electrical insulation performance, widely used in electronics, coatings, adhesives, plastic modification and other industrial fields[1][2][4]. In the electronics field, it is a core raw material for green electronic packaging, IC packaging and CCL (copper-clad laminate), and is also used in electronic components such as circuit boards, resistors and capacitors[4]. It has low moisture absorption, low thermal expansion coefficient and excellent electrical insulation performance, which can effectively protect electronic components from external interference and improve the service life and stability of electronic products[4]. In the coating field, it is used to prepare high-performance coatings with wear resistance, corrosion resistance and high temperature resistance, which are widely used in pipeline anti-corrosion, steel structure anti-corrosion and other scenarios[2][4]. The coating prepared by it has strong adhesion and good chemical resistance, and can adapt to harsh working environments. In the adhesive field, it is used to prepare high-strength epoxy adhesives, which are used in bonding of metal, plastic, glass and other materials, especially in the bonding of electronic components and structural parts, with high bonding strength and good durability[4]. In addition, it can be used as a plastic modifier to improve the hardness, strength and heat resistance of plastics[2]; it is also used in powder coatings, photoresists and other products, and plays an important role in promoting the development of related industries[4].
Safety Information
- Hazard Category: Irritant (GHS hazard symbol: GHS07, GHS09; hazard statements: H315, H317, H319, H411); skin irritation (Category 2), eye irritation (Category 2), skin sensitization (Category 1), aquatic chronic toxicity (Category 2)[1][3]
- Hazards: It is irritating to the skin and eyes; direct skin contact may cause redness, itching, dryness and skin sensitization reactions, and long-term contact may lead to skin dryness and chapping[3]. Eye contact may cause severe eye irritation, including conjunctival hyperemia, burning sensation and corneal irritation, which may cause persistent discomfort if not treated in time[3]. Inhalation of vapor or dust may cause respiratory tract discomfort such as cough and chest tightness, and may cause dizziness, nausea and vomiting in severe cases[3]. It is harmful to aquatic organisms and has chronic toxicity to the aquatic environment[3]. There is no obvious acute toxicity, but accidental ingestion may cause gastrointestinal discomfort[3].
- Operation Precautions: All operations shall be carried out in a well-ventilated environment; operators shall wear nitrile gloves, protective clothing, safety goggles and dust mask (or gas mask) to avoid direct contact, inhalation of vapor/dust and accidental ingestion[3]. Do not eat, drink or smoke during operation; clean the face and hands thoroughly after operation. The operation area shall be equipped with emergency rescue equipment and first aid drugs; avoid contact with strong oxidants, strong acids, strong bases and combustibles to prevent chemical reactions and generate harmful substances[2][3]. Firefighting measures: Use alcohol-resistant foam, dry powder, water mist or carbon dioxide to extinguish fires; do not use strong water jets; firefighters shall wear breathing protection equipment and fireproof clothing[3].
- Storage & Transportation Requirements: It shall be stored in a sealed HDPE barrel or cardboard barrel (lined with plastic bag); stored in a cool, dry and well-ventilated place at room temperature, protected from light, moisture and high temperature; locked and stored, and only accessible to qualified or authorized personnel[3][4]. Transportation shall avoid violent vibration, sun exposure and moisture; it shall be transported in accordance with the regulations of general chemicals, and shall not be mixed with food, feed, oxidants, strong acids, strong bases and combustibles[2][3]. Common packaging specifications include 100mL, 1kg, 25kg, 500kg, which can meet the needs of laboratory, small-scale production and industrial application[1].
- Waste Disposal: Waste residues and contaminated packaging shall be disposed of in strict accordance with the management regulations of hazardous chemicals, and shall not be directly discharged into water bodies, soil or sewers to avoid environmental pollution[3]. The waste shall be collected and treated by professional hazardous waste disposal institutions in accordance with relevant regulations; fire-fighting water after fire shall not be discharged into water bodies or soil[3].
- First Aid Measures: In case of skin contact, immediately take off contaminated clothes, rinse thoroughly with plenty of soapy water and clean water for at least 15 minutes, and seek medical advice if there is discomfort or skin sensitization reaction[3]; in case of eye contact, immediately open the eyelids, rinse with plenty of water for at least 15 minutes (take out contact lenses if worn), and seek medical advice in time[3]; in case of accidental ingestion, do not induce vomiting (prohibited for unconscious patients), rinse the mouth and drink plenty of water, and seek medical treatment immediately with the product label[3]; in case of inhalation discomfort, move to a well-ventilated place, keep the respiratory tract unobstructed, rest and keep warm, and seek medical advice if symptoms persist (symptoms may appear several hours later, and medical observation for at least 48 hours is required after the accident)[3].
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