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ε-Caprolactone

ε-Caprolactone Structure
ε-Caprolactone structure
CAS No.
502-44-3
Chemical Name:
ε-Caprolactone
Synonyms
CAPROLACTONE;2-OXEPANONE;oxepan-2-one;Oxepanone;EPSILON-CAPROLACTONE;E-CAPROLACTONE;6-HEXANOLACTONE;Polycaprolactone Polyol;6-CAPROLACTONE;6-Hydroxyhexan-6-olide
CBNumber:
CB1362738
Molecular Formula:
C6H10O2
Molecular Weight:
114.14
MDL Number:
MFCD00003267
MOL File:
502-44-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-27 23:33:57
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ε-Caprolactone Properties

Melting point -1 °C
Boiling point 96-97.5 °C10 mm Hg(lit.)
Density 1.03 g/mL at 25 °C(lit.)
vapor density 3.9 (vs air)
vapor pressure 0.01 mm Hg ( 20 °C)
refractive index n20/D 1.463(lit.)
Flash point 229 °F
storage temp. Store below +30°C.
solubility Chloroform, Ethyl Acetate
form Liquid
color Clear colorless, yellowing on aging
explosive limit 1.2-9%(V)
Water Solubility >1000 MG/L (20 ºC)
BRN 106919
Henry's Law Constant 5.5×10-2 mol/(m3Pa) at 25℃, HSDB (2015)
InChI 1S/C6H10O2/c7-6-4-2-1-3-5-8-6/h1-5H2
InChIKey PAPBSGBWRJIAAV-UHFFFAOYSA-N
SMILES O=C1CCCCCO1
LogP 0.32 at 20℃
CAS DataBase Reference 502-44-3(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 56RE988L1R
NIST Chemistry Reference 2-Oxepanone(502-44-3)
EPA Substance Registry System 2-Oxepanone (502-44-3)
UNSPSC Code 12352115
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P264-P280-P305+P351+P338-P337+P313
PPE Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xi
Risk Statements  37/38-41-36/38
Safety Statements  26-39-37/39
WGK Germany  2
RTECS  MO8400000
Autoignition Temperature 204 °C
TSCA  TSCA listed
HS Code  29322090
Storage Class 10 - Combustible liquids
Hazard Classifications Eye Irrit. 2
Hazardous Substances Data 502-44-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: > 2000 mg/kg LD50 dermal Rabbit 5990 mg/kg
REACH Registrations Active
NFPA 704
1
2 0

ε-Caprolactone price More Price(59)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 704067 ω-Caprolactone 97% 502-44-3 100g $47.1 2026-04-30 Buy
Sigma-Aldrich 8.02801 ε-Caprolactone for synthesis 502-44-3 250ML $65.9 2026-04-30 Buy
Sigma-Aldrich 704067 ω-Caprolactone 97% 502-44-3 500g $155 2026-04-30 Buy
TCI Chemical C0702 epsilon-Caprolactone >99.0%(GC) 502-44-3 25mL $17 2026-04-30 Buy
TCI Chemical C0702 epsilon-Caprolactone >99.0%(GC) 502-44-3 500mL $37 2026-04-30 Buy
Product number Packaging Price Buy
704067 100g $47.1 Buy
8.02801 250ML $65.9 Buy
704067 500g $155 Buy
C0702 25mL $17 Buy
C0702 500mL $37 Buy

ε-Caprolactone Chemical Properties, Uses, Production

Chemical Properties

Clear colorless liquid, yellowing on ageing

Uses

Intermediate in adhesives, urethane coatings, and elastomers; solvent; diluent for epoxy resins; synthetic fibers; organic synthesis.

Uses

ε-Caprolactone is widely used as a monomer in the manufacturing of highly specialized polymers. It is mainly utilized as a precursor to caprolactam. It finds an application in the synthesis of polyglecaprone, which is used as a suture material in surgery.

Uses

ε-caprolactone is popularly used in the preparation of poly caprolactone (PCL).

Definition

ChEBI: A epsilon-lactone that is oxepane substituted by an oxo group at position 2.

Synthesis Reference(s)

Journal of the American Chemical Society, 80, p. 4079, 1958 DOI: 10.1021/ja01548a063
The Journal of Organic Chemistry, 61, p. 4560, 1996 DOI: 10.1021/jo952237x
Tetrahedron Letters, 17, p. 2455, 1976 DOI: 10.1016/0040-4039(76)90018-6

General Description

ε-caprolactone is a cyclic ester. Ring opening polymerization of ε-caprolactone initiated by, tributylin n butoxide, ethyl magnesium bromide, or samarium acetate or heteropolyacid, leads to the formation of poly caprolactone (PCL).

Flammability and Explosibility

Not classified

ε-Caprolactone synthesis

79-21-0
108-94-1
502-44-3
Synthesis of ε-Caprolactone from Peroxyacetic acid and Cyclohexanone

ε-Caprolactone Preparation Products And Raw materials

Raw materials

Peroxyacetic acid Ozone Cyclohexanone Dicyclohexanone Diperoxide 6-Hydroxycaproic acid

Preparation Products

(5-Carboxypentyl)(triphenyl)phosphonium bromide tert-Butyl 6-Hydroxyhexanoate 6-Chlorohexanoyl chloride Adipic semialdehyde methyl ester 8-fluoro-3-methyl-octanoic acid

ε-Caprolactone Suppliers

Global Suppliers ( 450)
Supplier Tel Email Country ProdList Advantage
Shenzhen Xingkaiyue Biotechnology Co. , Ltd. 0755-18589069862 18589069862 1158168052@qq.com China 1000 58
Henan yingchuang 16650708709 hnyingchuang@163.com China 3973 58
Hubei SVETO New Material Technology Co., Ltd 13277095679 1375175909@qq.com China 641 58
Wuhan ShuEr Biology Technology Co.,Ltd 027-15827133616-6 15827133616 1799696397@qq.com China 1696 58
wenzhou shoucheng 15102776735 793269788@qq.com China 200 58
Hubei Chushengwei Chemistry Co.,Ltd. 87891008 18971625309 sales@cswchem.com China 297 58
Shenzhen Youzhi Biomaterial Co., Ltd 18138859716 2745190656@qq.com China 17 58
Shandong Mingde Biotechnology Co., Ltd 15553348166 m15553348166@163.com China 2027 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Supplier Advantage
Shenzhen Xingkaiyue Biotechnology Co. , Ltd. 58
Henan yingchuang 58
Hubei SVETO New Material Technology Co., Ltd 58
Wuhan ShuEr Biology Technology Co.,Ltd 58
wenzhou shoucheng 58
Hubei Chushengwei Chemistry Co.,Ltd. 58
Shenzhen Youzhi Biomaterial Co., Ltd 58
Shandong Mingde Biotechnology Co., Ltd 58
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62

Related articles

View Latest Price from ε-Caprolactone manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
ε-Caprolactone pictures 2026-09-02 ε-Caprolactone
502-44-3
 $1.40-35.00 1kg 99% Henan Fengda Chemical Co., Ltd
6-Hexanolactone pictures 2026-05-28 6-Hexanolactone
502-44-3
 $10.70 10kg 99% 10000kg Hebei Chuanghai Biotechnology Co,.LTD
6-Hexanolactone pictures 2026-03-20 6-Hexanolactone
502-44-3
 $10.00 1KG 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd

ε-Caprolactone Spectrum

ε-Caprolactone(502-44-3)MSε-Caprolactone(502-44-3)13CNMRε-Caprolactone(502-44-3)IR1ε-Caprolactone(502-44-3)IR2ε-Caprolactone(502-44-3)IR3ε-Caprolactone(502-44-3)IR

502-44-3 (ε-Caprolactone) Related Search:

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2-oxo-hexamethyleneoxid 5-Caprolactone 6-Caprolactone monomer 6-Hexanalactone 6-Hexanolacetone 6-Hydroxyhexanoic acid lactone 6-hydroxyhexanoicacidlactone 6-hydroxy-hexanoicaciepsilon-lactone 6-hydroxy-hexanoicacilactone epsilon-Kaprolakton 24,25-Dihydroxy Fusidic Acid &epsilon epsilon-Hexalactone epsilon-Hexanolactone Epsilon-CaprolaCLone MonoMer E-CAPROLACTONE FOR SYNTHESIS 1,6-Hexanolide 1-Oxa-2-oxocycloheptane 2-Oxacycloheptanone Hexanoic acid, epsilon-lactone hexanoicacid,epsilon-lactone Placcel M placcelm epsilon-Caprolactone MonoMer, 99% 1KG epsilon-Caprolactone MonoMer, 99% 250GR epsilon-kaprolakton(czech) Hexamethylene oxide, 2-oxo- Hexan-6-olide Hexanoic acid, 6-hydroxy-, epsilon-lactone Hexanoic acid, 6-hydroxy-, lactone &epsi:-Caprolactone monomer hexano-6-lactone ε-Caprolactone 〔6-Hexanolide〕 ε-CaproL 6-Hexanolactone~2-Oxepanone 6-HEXANOLIDE 6-HYDROXYCAPROIC ACID LACTONE EPSILON-HEXALACTONE EPSILON-HEXANOLACTONE gama-Caprolactone gama-Hexalactone EPSILON-CAPROLACTONE, 99+% E-CAPROLACTONE MONOMER epsilon-Caprolactone monomer, 99+% EPSILON-HEXANOICLACTONE 1-isocyanato-4-[(4-isocyanatocyclohexyl)methyl]cyclohexane 2-Oxepanone, 6-Caprolactone monomer, 6-Hexanolactone 6-Caprolactone monomer ,98.5% ε-Caprolactone> E-CAPROLACTONE FOR SYNTHESIS 250 ML ε-Caprolactone Product name molecular formula Cas number 6-Hexanolactone C6H10O2 ε-Caprolactone USP/EP/BP E - the cheese ε-Caprolactone,6-Hexanolactone 2-Oxepanone hexan-6-olide ε-Caprolactone 5-Caprolactone 6-Hexanolactone 6-Hexanalactone 6-Hexanolacetone L-61049 ε-Caprolactone, CAS 502-44-3 ε-Caprolactone 99% ε-Caprolactone，Epsilon-Caprolactone monomer