2H-chromene
Names
[ CAS No. ]:
254-04-6
[ Name ]:
2H-chromene
[Synonym ]:
Benzopyran
2H-Chromene
1,2-Benzopyran
3-Chromene
chromene
1,2-Chromene
1-benzopyran
2H-1-BENZOPYRAN
Chemical & Physical Properties
[ Density]:
1.095g/cm3
[ Boiling Point ]:
220.2ºC at 760mmHg
[ Molecular Formula ]:
C9H8O
[ Molecular Weight ]:
132.15900
[ Flash Point ]:
79.7ºC
[ Exact Mass ]:
132.05800
[ PSA ]:
9.23000
[ LogP ]:
2.09220
[ Vapour Pressure ]:
0.169mmHg at 25°C
[ Index of Refraction ]:
1.571
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- DJ2105000
- CHEMICAL NAME :
- 2H-1-Benzopyran
- CAS REGISTRY NUMBER :
- 254-04-6
- BEILSTEIN REFERENCE NO. :
- 0109871
- LAST UPDATED :
- 199803
- DATA ITEMS CITED :
- 1
- MOLECULAR FORMULA :
- C9-H8-O
- MOLECULAR WEIGHT :
- 132.17
- WISWESSER LINE NOTATION :
- T66 BO CHJ
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 250 mg/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: 11,81,1976
Safety Information
[ HS Code ]:
2901299090
Synthetic Route
Customs
[ HS Code ]: 2901299090
[ Summary ]:
2901299090 unsaturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%