Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 2H-chromene
Price:
Purity: 95.0%
Stocking Period: 10 Day
Contact: Yang

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2H-chromene
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang

254-04-6

254-04-6 structure

254-04-6 structure

Name: 2H-chromene
Chemical Name: 2H-chromene
CAS Number: 254-04-6
Molecular Formula: C₉H₈O
Molecular Weight: 132.15900
Create Date: 2018-03-15 08:00:00
Modify Date: 2024-01-04 12:00:14

Name	2H-chromene
Synonyms	Benzopyran 2H-Chromene 1,2-Benzopyran 3-Chromene chromene 1,2-Chromene 1-benzopyran 2H-1-BENZOPYRAN

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

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

HS Code	2901299090

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%