Cyclohexane is an important petrochemical feedstock. By oxidizing cyclohexane, cyclohexanone and cyclohexanol (KA oil) can be produced, which can be further converted into adipic acid and caprolactam (key monomers for the production of nylon textiles, engineering plastics, and fibers). The vast majority of global cyclohexane production is used to produce nylon 6 and nylon 6,6.
What is Cyclohexanone CAS 110-82-7?
Cyclohexane CAS 110-82-7 is a colorless, flammable liquid with a distinctive detergent-like odor, widely used in chemical and industrial applications. With a molecular formula of C6H12, it has a melting point of 6.47°C and a boiling point of 80.7°C. Cyclohexane is insoluble in water but miscible with various organic solvents. As a non-polar solvent, it is mainly used in the nylon industry as an intermediate in the production of adipic acid and caprolactam.
Properties of Cyclohexane
physical properties :
- Appearance: Colorless liquid
- Boiling point: 80.7 °C
- Melting point: 6.5 °C
- Density: 0.7739 g/mL @ 20 °C
- Solubility: Insoluble in water; soluble in organic solvents
- Flash point: −18 °C (highly flammable)
Chemical properties:
Cyclohexane is stable but incompatible with strong oxidizers.As a non‑polar solvent, it supports a wide range of industrial uses, from coatings to polymer manufacturing.
Learn more about the properties of cyclohexane
How Cyclohexane Is Used In Nylon Production
Nylon 6 Production (Caprolactam Route)
Cyclohexane is first oxidized to generate KA oil (cyclohexanone and cyclohexanol mixture). The refined cyclohexanone extracted from KA oil reacts with hydroxylamine to form cyclohexanone oxime.Through Beckmann rearrangement, cyclohexanone oxime is converted into caprolactam. Finally, caprolactam undergoes polymerization to produce Nylon 6, which is widely applied in apparel fabrics, carpets and industrial engineering plastics.
Nylon 66 Production (Adipic Acid Route)
Cyclohexane oxidation produces KA oil (ketone-alcohol oil, a mixture of cyclohexanone and cyclohexanol). After further nitric acid oxidation, KA oil is processed into adipic acid.By chemical condensation reaction, adipic acid is combined with hexamethylenediamine to synthesize Nylon 66. Nylon 66 is famous for high mechanical strength and thermal stability, commonly used in automotive parts and electrical components.
Nylon 6 vs Nylon 66: Cyclohexane's Role in Both
| Feature | Nylon 6 (Caprolactam Route) | Nylon 66 (Adipic Acid Route) |
|---|---|---|
| Core Raw Material | Cyclohexane (via cyclohexanone intermediate) | Cyclohexane (via KA oil & adipic acid) |
| End Applications | Synthetic fibers, textiles, packaging | Auto parts, high-performance engineering plastics |
| Processing Temp. | ~250°C | ~270°C |
| Purity Requirement | High industrial-grade cyclohexane | High-purity cyclohexane for stable oxidation |
In short, both mainstream nylon grades rely heavily on high-quality industrial cyclohexane to ensure stable production and consistent polymer performance.
Why Cyclohexane is Preferred in Nylon Manufacturing
Reliable Oxidation Performance
Cyclohexane is easily oxidized to form KA oil, steadily supplying key intermediates for nylon production.
Excellent Solvent & Processing Characteristics
It has stable boiling point and volatility, enabling smooth reaction and production operation.
Diversified Downstream Conversion
Cyclohexane can be made into caprolactam and adipic acid, for both Nylon 6 and Nylon 66 manufacturing.
Auxiliary Effect On Fiber Processing
Its derivatives improve nylon fiber quality, ensuring even dyeing and stable finished performance.
The Growing Use of Cyclohexane in Nylon Production
The increasing global production of nylon means a corresponding increase in the use of cyclohexane.
- The rapid development of the automotive, textile, electronics, and construction industries has led to a growing demand for nylon materials. This increase in nylon production has driven market demand for industrial-grade cyclohexane.
- New technologies are enabling better utilization of cyclohexane, a cost-effective raw material.
- As nylon is used in downstream products, the application of cyclohexane will become increasingly widespread over time.
Tianjin Gnee Biotech Co., Ltd. is one of the leading manufacturers and suppliers of High-Purity Cyclohexane Chemical CAS 110-82-7 in China. Welcome to purchase our chemical products. Please contact us for pricing inquiries.
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