Caprolactam
Also known as azepan-2-one, epsilon-Caprolactam, 2-Oxohexamethylenimine
Key facts
What buyers check first

What is Caprolactam?
Plain description, key identifiers and synonyms
Epsilon-caprolactam is a member of the class of caprolactams that is azepane substituted by an oxo group at position 2. It has a role as a human blood serum metabolite.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- azepan-2-one
- CAS number
- 105-60-2 CAS number cross-checkedOther or deprecated CAS: 9012-16-2
- EC numbers
- 203-313-2, 918-077-2, 919-537-5
- Molecular formula
- C6H11NO
- UNII
- 6879X594Z8
- MDL number
- MFCD00006936, MFCD19226350
- InChIKey
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N
- InChI
- InChI=1S/C6H11NO/c8-6-4-2-1-3-5-7-6/h1-5H2,(H,7,8)
- SMILES (canonical and isomeric)
- C1CCC(=O)NCC1
Synonyms
- azepan-2-one
- epsilon-Caprolactam
- 2-Oxohexamethylenimine
- 6-Caprolactam
- Aminocaproic lactam
- Hexahydro-2H-azepin-2-one
- 6-Hexanelactam
- 2-Oxohexamethyleneimine
- 2-Azacycloheptanone
- Hexanolactam
- 2H-Azepin-2-one, hexahydro-
- Hexahydro-2-azepinone
- 2-Perhydroazepinone
- 1,6-Hexolactam
- Hexanone isoxime
- Hexanonisoxim
- Caprolattame
- 2-Ketohexamethylenimine
- Cyclohexanone iso-oxime
- 2-Ketohexamethyleneimine
- 1-Aza-2-cycloheptanone
- Caprolactam monomer
- Epsylon kaprolaktam
- 6-Aminocaproic acid lactam
- Extrom 6N
Show all 39 synonymsShow fewer synonyms
- Kapromine
- hexannic acid
- Stilon
- e-Kaprolaktam
- Hexamethylenimine, 2-oxo-
- 1,6-Hexalactam
- Capron PK4
- 6-Aminohexanoic acid cyclic lactam
- 2H-Azepin-7-one, hexahydro-
- gamma-caprolactam
- Hexanoic acid, 6-amino-, lactam
- Hexanoic acid, 6-amino-, cyclic lactam
- Lactam, aminocaproic
- hexahydro 2H Azepin 2 one
Physical and chemical properties
Measured values and descriptors computed from the structure
Physical and chemical properties
Measured values, check the supplier specification for your grade
| Appearance | Hygroscopic leaflets from petroleum etherexp.Measured value |
|---|---|
| Odour | Unpleasant odorexp.Measured value |
| Taste | UNPLEASANTexp.Measured value |
| Melting point | 69.3 °Cexp.Measured value |
| Boiling point | 270 °Cexp.Measured value |
| Density | 1.02 at 75 °C/4 °C (liq)exp.Measured value |
| Flash point | 125 °Cexp.Measured value |
| Autoignition temperature | 375 °Cexp.Measured value |
| Solubility | In water, 5.25 × 10⁺⁶ mg/l @ 25 °C.exp.Measured value |
| Vapour pressure | 6 mm Hg @ 120 °Cexp.Measured value |
Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.
Computed descriptors
Calculated from the structure, useful for screening and formulation
| Molecular weight | 113.16 g/molcalc.Computed value |
|---|---|
| Exact mass | 113.0841 Dacalc.Computed value |
| LogP (octanol/water) | 0.68calc.Computed value |
| Topological polar surface area | 29.1 Ųcalc.Computed value |
| Hydrogen bond donors | 1calc.Computed value |
| Hydrogen bond acceptors | 1calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 8calc.Computed value |
| Rings | 1calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 0.83calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
| Lipinski rule of five | Passes (0 violations)calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Murcko scaffold
The ring system that remains when every side chain is removed
O=C1CCCCCN1
1 ring, 8 atoms. This chemical is the scaffold itself.
420 other chemicals share this scaffoldSafety and hazards
GHS classification summary, not a safety data sheet
Hazard statements
- H302Harmful if swallowed.
- H315Causes skin irritation.
- H319Causes serious eye irritation.
- H332Harmful if inhaled.
- H335May cause respiratory irritation.
Precautionary statements (20)
- P261Avoid breathing dust, fume, gas, mist, vapours or spray.
- P264Wash skin thoroughly after handling.
- P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
- P270Do not eat, drink or smoke when using this product.
- P271Use only outdoors or in a well-ventilated area.
- P280Wear protective gloves, protective clothing, eye protection and face protection.
- P301 + P317If swallowed: Get medical help.
- P302 + P352If on skin: Wash with plenty of water.
- P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
- P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P317Get medical help.
- P319Get medical help if you feel unwell.
- P321Specific treatment (see supplemental first aid instructions on the label).
- P330Rinse mouth.
- P332 + P317If skin irritation occurs: Get medical help.
- P337 + P317If eye irritation persists: Get medical help.
- P362 + P364Take off contaminated clothing. And wash it before reuse.
- P403 + P233Store in a well-ventilated place. Keep container tightly closed.
- P405Store locked up.
- P501Dispose of contents and container in accordance with local regulations.
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Full safety data and first aidCaprolactam suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
- Germany, HamburgUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- China, NingboUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- China, ShanghaiUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- JapanUnclaimed profileepsilon-CaprolactamGrade, purity and minimum order on requestPrice on request
- Price on request
- China ManufacturerUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- China ManufacturerUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- China ManufacturerUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- India ManufacturerUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
- India, Ahmedabad ManufacturerUnclaimed profileCaprolactamGrade, purity and minimum order on requestPrice on request
Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.
Where suppliers are based
128 suppliers in 27 countries
- China39
- United States32
- India10
- United Kingdom6
- Germany5
- Spain3
- and 21 more countries
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Caprolactam price
Indicative price range per kg from live supplier offers
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Uses and applications
What the substance is used for, by industry and function
Mfr synthetic fibers of the polyamide type (Perlon), solvent for high mol wt polymers.
Manufacture of synthetic fibers (especially nylon 6), plastics, bristles, film, coatings, synthetic leather, plasticizers and paint vehicles, cross-linking agent for polyurethanes, synthesis of amino acid lysine.
Us FDA permits use of caprolactam ethylene-ethyl acrylate graft polymers as component of side seam cements intended for use in contact with food ...
Caprolactam is primarily used in the manufacture of synthetic fibers (especially Nylon 6). Caprolactam is also used in brush bristles, textile stiffeners, film coatings, synthetic leather, plastics, plasticizers, paint vehicles, cross-linking for polyurethanes, and in the synthesis of lysine.
Industrial uses: Dye, Intermediate, Catalyst, Processing aids not otherwise specified, Monomers, Solvent.
Consumer uses: Monomers, Dye, Intermediate, Catalyst, Soil amendments (fertilizers).
Industries and functions
Roles
- animal metabolite
- eukaryotic metabolite
- human blood serum metabolite
- human metabolite
- mammalian metabolite
- metabolite
Functional uses
- Filler
- Flavouring and nutrient
- Monomers
How it is made
Catalytic hydrogenation of phenol to cyclohexanone, reaction with ammonia to cyclohexanone oxime with ammonia to cyclohexanone with Beckmann rearrangement with sulfuric acid catalyst, catalytic oxidation of cyclohexane with cyclohexanone, reaction with hydroxylamine sulfate and ammonia to cyclohexanone oxime followed by sulfuric acid catalyzed Beckmann rearrangement...
UV-catalyzed reaction of cyclohexane with nitrosyl chloride to cyclohexanone oxime hydrochloride, followed by Beckmann rearrangement
Catalytic oxidation of cyclohexane to cyclohexanol, reacting with peracetic acid to form caprolactone, and further reaction with ammonia.
Regulatory status
Inventories, regulations and trade controls that list this substance
Europe
- EU harmonised classification (CLP Annex VI)Index no: 613-069-00-2
United States
- TSCA inventory (USA)Status: Active in US commerce
HS code and trade data
Customs classification and reported world trade statistics
Global trade
World import and export statistics for the HS code Caprolactam is traded under.
6-Hexanelactam (epsilon-caprolactam)
The HS code shown for Caprolactam is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.
Frequently asked questions
Quick answers about Caprolactam, based on the data on this page
What is Caprolactam?
What is the CAS number of Caprolactam?
What is the molecular formula and weight of Caprolactam?
What is Caprolactam used for?
Is Caprolactam hazardous?
What is the HS code of Caprolactam?
Where can I buy Caprolactam?
Where can I buy Caprolactam in India?
What is the price of Caprolactam?
Guides for buyers
Practical guides that help when you source, ship or handle Caprolactam
- Guide, SafetyHow to read a safety data sheet in 10 minutesA section by section method to pull the essentials out of any 16 section SDS: identity, hazards, composition, storage, PPE, properties, transport and emergency measures.Read
- Guide, SafetyGHS pictograms, signal words and hazard statements explainedA practical guide to the nine GHS pictograms, the signal words Danger and Warning, H and P statements, and how to read a chemical label in seconds.Read
- Article, QualityWhat a certificate of analysis should containThe parts of a complete COA, how to read it against your specification, the warning signs of a weak or copied certificate and how to verify results.Read
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