N-Acetylcaprolactam
Synonym(s):1-Acetyl-2-oxohexamethyleneimine;1-Acetylhexahydro-2H-azepin-2-one
- CAS NO.：1888-91-1
- Empirical Formula: C8H13NO2
- Molecular Weight: 155.19
- MDL number: MFCD00003262
- EINECS: 217-565-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:59:15
What is N-Acetylcaprolactam?
Chemical properties
colourless liquid
The Uses of N-Acetylcaprolactam
N-Acetylcaprolactam has been used:
- as initiator to investigate kinetics of anionic polymerization of ε-caprolactam
- in ring-opening polymerization of nylon 6
Definition
ChEBI: N-Acetylcaprolactam is a member of caprolactams.
Properties of N-Acetylcaprolactam
| Boiling point: | 134-135 °C/26 mmHg (lit.) |
| Density | 1.094 g/mL at 25 °C (lit.) |
| vapor pressure | 2.71Pa at 20℃ |
| refractive index | n |
| Flash point: | >230 °F |
| storage temp. | Sealed in dry,Room Temperature |
| pka | -1.42±0.20(Predicted) |
| form | clear liquid |
| color | Colorless to Light yellow |
| Water Solubility | 81.7g/L at 20℃ |
| BRN | 119598 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 1888-91-1(CAS DataBase Reference) |
| NIST Chemistry Reference | N-Acetylcaprolactam(1888-91-1) |
| EPA Substance Registry System | 2H-Azepin-2-one, 1-acetylhexahydro- (1888-91-1) |
Safety information for N-Acetylcaprolactam
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for N-Acetylcaprolactam
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