2,3-Dihydro-5H-1,4-benzodioxepin-5-one

Modify Date: 2025-10-09 15:33:29

2,3-Dihydro-5H-1,4-benzodioxepin-5-one Structure
2,3-Dihydro-5H-1,4-benzodioxepin-5-one structure
 Common Name 2,3-Dihydro-5H-1,4-benzodioxepin-5-one
CAS Number 22891-52-7 Molecular Weight 164.15800
Density 1.238g/cm3 Boiling Point 178-184ºC 15mm
Molecular Formula C9H8O3 Melting Point 29-31ºC
MSDS N/A Flash Point N/A

 Use of 2,3-Dihydro-5H-1,4-benzodioxepin-5-one



 Names

Name 2,3-dihydro-1,4-benzodioxepin-5-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.238g/cm3
Boiling Point 178-184ºC 15mm
Melting Point 29-31ºC
Molecular Formula C9H8O3
Molecular Weight 164.15800
Exact Mass 164.04700
PSA 35.53000
LogP 1.23580
Vapour Pressure 9.46E-05mmHg at 25°C
Index of Refraction 1.558

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DF4725800
CHEMICAL NAME :
5H-1,4-Benzodioxepin-5-one, 2,3-dihydro-
CAS REGISTRY NUMBER :
22891-52-7
BEILSTEIN REFERENCE NO. :
0004464
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C9-H8-O3
MOLECULAR WEIGHT :
164.17

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>5 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EJMCA5 European Journal of Medicinal Chemistry--Chimie Therapeutique. (Editions Scientifiques Elsevier, 29 rue Buffon, F-75005, Paris, France) V.9- 1974- Volume(issue)/page/year: 10,607,1975

 Safety Information

Safety Phrases S24/25
HS Code 2932999099

 Precursor & DownStream

Precursor  1

DownStream  0

 Preparation


 Customs

HS Code 2932999099
Summary 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

5H-1,4-Benzodioxepin-5-one,2,3-dihydro
2,3-Dihydro-5H-1,4-benzodioxepin-5-one
2,3-Dihydro-5H-1,4-Benzodioxipin-5-One
MFCD00236035
2,3-DIBROMOOCTAFLUOROBUTANE
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