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.
Application of epsilon-Caprolactam
(1) The majority of caprolactam is used in the production of polycaprolactam, of which about 90% is used for the production of synthetic fibers, that is, Kaplon, 10% used as plastic for the manufacture of gears, bearings, pipe, medical equipment and electrical, insulating materials. Also used in coatings, plastics and for the synthesis of lysine in a small amount and so on.
(2) Caprolactam is mainly used for the preparation of caprolactam resin, fiber and leather, also used as pharmaceutical raw materials.
(3) It can be used as polymer solvent, for the manufacture of polyamide-based synthetic fiber and the fixing phase of gas chromatography.
ε-Caprolactam is used as a monomer in the preparation of synthetic fibers of the polyamide as well as a solvent for high molecular weight polymers. It is also used in coatings and plasticizers. Further, it is used as a cross linking agent for polyurethanes. In addition to this, it is used to prepare nylon-6, which finds application in fibers and plastics.
Monomer for manufacture of polycaprolactam (Nylon 6) used in carpets, textiles, clothing, and tires
manufacture of synthetic fibers of the polyamide type (Perlon); solvent for high mol wt polymers; precursor of nylon-6, q.v.
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) |
