CAS 142-82-5: Heptane (n-Heptane) (C7H16)
Identity
| CAS Number | 142-82-5 |
| Molecular Formula | C7H16 |
| IUPAC Name | heptane |
| Molecular Weight | 100.2 g/mol |
| SMILES | CCCCCCC |
| Synonyms | n-heptane, dipropyl methane, heptyl hydride |
2D Structure
Physical Properties
| Density | 0.684 g/mL at 25°C |
| Boiling Point | 98.4°C |
| Melting Point | -90.6°C |
| Flash Point | -4.0°C |
| Vapor Pressure | 6.1 kPa at 20°C |
| Refractive Index | nD = 1.387 |
| Dielectric Constant | ε = 1.92 |
Safety & GHS Classification
FlammableIrritantHealth HazardGHS09
- H225: Highly flammable liquid and vapor
- H304: May be fatal if swallowed and enters airways
- H315: Causes skin irritation
- H336: May cause drowsiness or dizziness
- H410: Very toxic to aquatic life with long lasting effects
Storage: Store in cool, well-ventilated area away from ignition sources. Use explosion-proof equipment. Ground containers during transfer.
Material Compatibility Matrix
Plastics
| Material | Rating |
|---|
| PTFE | Excellent |
| PVC | Fair |
| PE | Good |
| PP | Good |
| PEEK | Excellent |
| PVDF | Good |
Rubbers
| Material | Rating |
|---|
| Viton | Severe Effect |
| NBR | Severe Effect |
| EPDM | Severe Effect |
| Silicone | Poor |
| FKM | Severe Effect |
Metals
| Material | Rating |
|---|
| Stainless 316 | Excellent |
| Aluminum | Excellent |
| Copper | Excellent |
| Brass | Excellent |
Applications
- Octane rating standard (0 on octane scale)
- Laboratory solvent (non-polar extractions)
- Pharmaceutical manufacturing
- Pesticide formulation solvent
- Rubber cement solvent
- Paint and coating solvent
- Gasoline blending component
External References: PubChem
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