epsilon-Caprolactam CAS：105-60-2
Solubility Performance：This chemical mixes readily with both water-based and organic solutions, allowing it to be used across a wide range of industrial fields.
Practical Applications：Thanks to its excellent dissolving properties, it is widely used in coatings, adhesives and industrial cleaning products, and works especially well with aliphatic hydrocarbons and chlorinated solvents.Thermal Features：It remains stable under normal processing conditions, with a melting point range of 68–71°C.Volatility Traits：Having a vapor pressure lower than 0.01 mmHg, the product evaporates very slowly, which improves safety during storage and daily operation.
epsilon-Caprolactam appears as white crystalline flakes or molten liquid under different temperature conditions. It features outstanding solubility in a wide range of solvent systems, such as chlorinated solvents, aliphatic hydrocarbons, cyclohexene, and aromatic solvents like benzene. It can also be fully dissolved in methanol, ethanol, and various types of ether solvents.
Parameters
| Melting point | 68-71 °C(lit.) |
| Boiling point | 136-138 °C10 mm Hg(lit.) |
| density | 1.01 |
| bulk density | 500-550kg/m3 |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | 1.4935 |
| FEMA | 4235 | 1,6-HEXALACTAM |
| Fp | 152 °C |
| storage temp. | Store below +30°C. |
| solubility | H2O: 0.1 g/mL, clear, colorless |
| form | Crystals or Flakes |
| pka | 16.61±0.20(Predicted) |
| Specific Gravity | 1.042 (20/4℃) |
| color | White |
| PH | 7.0-8.5 (333g/l, H2O, 20℃) |
| Odor | amine spicy |
| Odor Type | spicy |
| explosive limit | 1.4-8%(V) |
| Water Solubility | 4560 g/L (20 ºC) |
| Merck | 141,761 |
| JECFA Number | 1594 |
| BRN | 106934 |
| Dielectric constant | 1.7 - 1.9（0.0℃） |
| Exposure limits | ACGIH: TWA 5 mg/m3 |
| NIOSH: TWA 1 mg/m3; TWA 0.22 ppm; STEL 3 mg/m3; STEL 0.66 ppm | |
| LogP | 0.12 at 25℃ |
| CAS DataBase Reference | 105-60-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Caprolactam(105-60-2) |
| IARC | 3 (Vol. 39, Sup 7, 71) 1999 |
| EPA Substance Registry System | Caprolactam (105-60-2) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 20/22-36/37/38 |
| Safety Statements | 2-24/25 |
| RIDADR | UN 2811 6.1/PG 2 |
| OEB | C |
| OEL | TWA: 1 mg/m3, STEL: 3 mg/m3 |
| WGK Germany | 1 |
| RTECS | CM3675000 |
| Autoignition Temperature | 707 °F |
| TSCA | Yes |
| HS Code | 29337100 |
| Hazardous Substances Data | 105-60-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 2.14 g/kg (Smyth) |
