Hexahydro-4-methylphthalic Anhydride (CAS 19438-60-9) Ultimate Guide: Properties, Applications & Supplier Insights
Table of Contents
- Product Overview & Specifications
- Technical Parameter Comparison
- Industrial Applications & Functional Mechanisms
- Usage Scenarios by Industry
- Verified Client Case Studies
- Request Customized Quotation
Product Overview & Specifications
Hexahydro-4-methylphthalic Anhydride (CAS 19438-60-9) is a high-purity cyclic anhydride widely used as epoxy curing agent and pharmaceutical intermediate. Key parameters:
| Parameter | Specification |
|---|---|
| Chemical Name | Hexahydro-4-methylphthalic anhydride |
| CAS Number | 19438-60-9 |
| Molecular Formula | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Purity | ≥99.5% (GC) |
| Melting Point | -15°C to 10°C |
| Boiling Point | 290°C at 760 mmHg |
| Density | 1.18 g/cm³ at 25°C |
Technical Parameter Comparison
| Feature | Standard Grade | Pharma Grade | Electronic Grade |
|---|---|---|---|
| Purity | 99.5% | 99.95% | 99.9% |
| Water Content | ≤0.2% | ≤0.05% | ≤0.1% |
| Acid Value | 640-660 mg KOH/g | 655-665 mg KOH/g | 650-660 mg KOH/g |
| Viscosity @25°C | 50-80 mPa·s | 60-70 mPa·s | 55-75 mPa·s |
| Chloride Content | ≤50 ppm | ≤10 ppm | ≤20 ppm |
Industrial Applications & Functional Mechanisms
Primary Application Fields
- Epoxy Resin Curing: Low-viscosity latent curing agent for electrical encapsulation materials
- Polymer Modification: Enhances thermal stability in polyimide resins
- Pharmaceutical Intermediate: Key precursor in NSAID synthesis
- Coating Additives: Improves adhesion in high-temperature coatings
Usage Scenarios by Industry
1. Electronics Encapsulation
Used in semiconductor packaging compounds requiring:
- Low dielectric constant (Dk ≤ 3.2 @1MHz)
- High glass transition temperature (Tg > 160°C)
- CTE ≤ 50 ppm/°C
2. Advanced Composites
Matrix modifier for carbon fiber-reinforced polymers (CFRP) in aerospace applications:
- 20% improvement in flexural strength
- 15% weight reduction vs traditional anhydrides
Verified Client Case Studies
Case 1: Electronics Manufacturer (Shenzhen, China)
| Parameter | Before | After |
|---|---|---|
| Curing Time @150°C | 120 min | 85 min |
| Void Content | 2.1% | 0.8% |
| Thermal Cycling Performance | 500 cycles | 1200+ cycles |
Case 2: Pharmaceutical Company (Hyderabad, India)
- Intermediate yield improvement from 78% to 92%
- Reduced purification steps from 5 to 3
- Annual production cost savings: $1.2M
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