English
Español 
Português 
русский 
Français 
日本語 
Deutsch 
tiếng Việt 
Italiano 
Nederlands 
ภาษาไทย 
Polski 
한국어 
Svenska 
magyar 
Dansk 
Suomi 
العربية 
český 
ελληνικά 
11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA)
Methyltetrahydrophthalic anhydride (MTHPA) CAS 11070-44-3 is a high-performance curing agent widely used in epoxy resin systems. It offers excellent thermal stability, low viscosity, and outstanding electrical insulation properties, making it ideal for electronic encapsulation and insulation materials. MTHPA provides long pot life, low volatility, and minimal toxicity compared to traditional anhydrides, ensuring safer processing. It enhances mechanical strength, chemical resistance, and durability of cured products, making it a reliable choice for coatings, adhesives, composites, and electrical applications.
Model:CAS NO.: 11070-44-3
Send Inquiry
Product Description
11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA), identified by CAS No. 11070-44-3, is a highly effective curing agent used extensively in the epoxy resin industry. It appears as a light yellow liquid and is prized for its ability to enhance the physical and electrical properties of cured polymers. Supplied by AECOCHEM, this compound serves as a critical component in the manufacturing of electrical components, advanced composites, and high-performance adhesives.
Key Characteristics and Advantages
When used as a curing agent for epoxy resins, 11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA) offers several distinct performance benefits:
- Low Volatility: It exhibits low volatility during processing, ensuring a safer working environment and consistent mixture ratios.
- Low Freezing Point: With a freezing point of -15°C (max), it remains in a liquid state under various storage conditions, facilitating easier handling and pumping.
- Long-Term Stability: Epoxy systems cured with MTHPA demonstrate excellent long-term storage stability at room temperature.
- Safety Profile: It is characterized by low toxicity relative to other anhydride curing agents.
Industrial Applications
11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA)is widely utilized in the electrical and industrial sectors due to its superior insulating and mechanical properties.
- Electrical Components: Essential for the impregnation, casting, and winding of motors, dry-type transformers, and appliances.
- Capacitors: Used in the production of both appliance capacitors and high-voltage power capacitors.
- Electronics: Serves as a key material for integrated circuits (IC) encapsulation and sealing.
- Coatings & Adhesives: Applied in solvent-free paints, laminated boards, and high-strength epoxy adhesives.
Technical Specifications
| Property | Details |
|---|---|
| Product Name | Methyltetrahydrophthalic Anhydride (MTHPA) |
| CAS Number | 11070-44-3 |
| Molecular Formula | C₉H₁₀O₃ |
| Molecular Weight | 166.18 |
| Appearance | Light yellow liquid |
| Viscosity (25℃) | 30-60 mPa.S |
| Anhydride Content | 41.0% min |
| Freezing Point | -15°C max |
| Flash Point | 157 °C |
| Standard Package | 220kg/steel drum |
Storage and Handling
To maintain the quality of 11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA), proper storage conditions must be observed.
- Environment: Store in a sealed, dry, and well-ventilated place.
- Safety: Keep away from heat sources and open flames (Guard Against Fire) as the flash point is 157°C.
- Moisture Control: As an anhydride, it is sensitive to moisture; containers should remain tightly closed to prevent hydrolysis.
FAQ: 11070-44-3 Methyltetrahydrophthalic Anhydride (MTHPA)
Below are answers to common technical and safety questions regarding 11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA), designed to assist with safe handling and application understanding.
What is it used for?
11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA) is primarily used as a high-performance curing agent for epoxy resins. Its key applications include:
- Electrical Insulation: Essential for the casting, impregnation, and winding of motors, dry-type transformers, and power capacitors.
- Electronics: Used in the encapsulation of integrated circuits (ICs) to provide mechanical strength and electrical insulation.
- Industrial Coatings: Applied in solvent-free paints, laminated boards, and high-strength epoxy adhesives.
What are its properties?
MTHPA is characterized by specific physical properties that make it suitable for industrial processing.
- Appearance: A light yellow liquid at room temperature.
- Viscosity: Low viscosity (30-60 mPa.S at 25°C), ensuring good flow and wetting properties.
- Freezing Point: Low freezing point (max -15°C), allowing for easier handling in cooler environments compared to other anhydrides.
- Flash Point: 157°C, indicating moderate flammability.
What are the hazards?
While 11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA) is considered to have low toxicity, it poses specific hazards that require management.
- Sensitization: Like other acid anhydrides, it is a respiratory and skin sensitizer. Repeated exposure may cause allergic reactions or asthma-like symptoms.
- Irritation: It causes severe skin burns and eye damage. Direct contact leads to irritation of the mucous membranes and upper respiratory tract.
- Flammability: It is a combustible liquid; thermal decomposition can release irritating and toxic gases.
What to do in case of exposure?
Immediate action is required if exposure to MTHPA occurs.
- Skin Contact: Immediately remove contaminated clothing and wash the affected area thoroughly with soap and water. Seek medical attention if irritation persists.
- Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and consult a physician.
- Inhalation: Move the individual to fresh air immediately. If breathing is difficult, administer oxygen and seek medical help.
What are its main isomers?
Commercial MTHPA is typically a mixture of isomers to optimize physical properties like melting point.
- Primary Isomer: The main component is typically **4-Methyltetrahydrophthalic anhydride**.
- Isomeric Mixture:** It often contains minor amounts of other methyl-substituted isomers (such as methyl-3-tetrahydrophthalic anhydride) to maintain the liquid state at room temperature.
Is it stable?
11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA) is stable under recommended storage conditions.
- Storage Stability: It offers long-term stability at room temperature when stored in a sealed container.
- Reactivity: It reacts exothermically with water (hydrolysis) to form the corresponding acid. It also reacts vigorously with strong oxidizing agents and bases.
- Moisture Sensitivity: It is hygroscopic; containers must be kept tightly sealed to prevent degradation from atmospheric moisture.
Some photos of shipment:
Hot Tags: 11070-44-3 Methyltetrahydrophthalic anhydride (MTHPA)
Send Inquiry
Please feel free to fill your inquiry in the form below. We will reply you in 24 hours.
X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies.
Privacy Policy