Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

491-38-3

491-38-3 structure

491-38-3 structure

Name: Chromone
Chemical Name: chromone
CAS Number: 491-38-3
Molecular Formula: C₉H₆O₂
Molecular Weight: 146.143
Create Date: 2018-07-03 20:09:21
Modify Date: 2026-06-29 18:02:34

Name	chromone
Synonyms	1-Benzopyran-4-one 2,3-Benzo-4-pyrone 4H-Chromen-4-one Chromone (6CI, 7CI, 8CI) 4-oxo-4H-1-benzopyran Benzo-g-pyrone benzopyran-4-one EINECS 207-737-9 Benzo-gama-pyrone Benzo-gamma-pyrone 4-chromone JRH-00601, 4H-Chromen-4-one 4H-CHROMEN-4-ONE 4-Chromone Chromen-4-one 4-Chromenone CHROMEN-4-ONE CHROMONE Benzo-γ-pyrone 1,4-benopyrone Chromone1-Benzopyran-4(4H)-one 4H-benzo(b)pyran-4-one T66 BO EVJ 1,4-benzopyrone 1-BENZOPYRAN-4(4H)-ONE Benz-γ-pyrone 4H-Benzo(b)pyran-4-one Chromanone-4-one MFCD00024064 4H-1-Benzopyran-4-one 4H-benzo[b]pyran-4-one 2-Chromone 2,3-benzo-4-pyrone Chromone,1-Benzopyran-4-one benzo-γ-pyrone 1-benzopyran-4-one

Density	1.2±0.1 g/cm3
Boiling Point	238.5±33.0 °C at 760 mmHg
Melting Point	55-60 °C(lit.)
Molecular Formula	C₉H₆O₂
Molecular Weight	146.143
Flash Point	106.5±18.9 °C
Exact Mass	146.036774
PSA	30.21000
LogP	1.38
Vapour Pressure	0.0±0.5 mmHg at 25°C
Index of Refraction	1.595

CHEMICAL IDENTIFICATION

RTECS NUMBER :: GB7887000

CHEMICAL NAME :: Chromone

CAS REGISTRY NUMBER :: 491-38-3

BEILSTEIN REFERENCE NO. :: 0114087

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C9-H6-O2

MOLECULAR WEIGHT :: 146.15

WISWESSER LINE NOTATION :: T66 BO EVJ

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 :: 91 mg/kg

TOXIC EFFECTS :: Behavioral - anticonvulsant

REFERENCE :: PMDCAY Progress in Medical Chemistry. (Elsevier Science Pub. Co., Inc., 52 Vanderbilt Ave., New York, NY 10017) V.1- 1961- Volume(issue)/page/year: 9,65,1973

Hazard Codes	Xn
Risk Phrases	22
Safety Phrases	S36/37/39-S26
WGK Germany	3
RTECS	GB7887000
HS Code	2932999099

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%

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.