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4-Chromanone

4-Chromanone
4-Chromanone structure
CAS No.
491-37-2
Chemical Name:
4-Chromanone
Synonyms
CHROMANONE;4-Chlomanone;4-CHROMANONE;4-chormanone;CHROMAN-4-ONE;Isochromanone;CHROMANONE, 4-;4-Chromanone,99%;4-Chromanone, 98+%;dihydrobenz-γ-pyrone
CBNumber:
CB4191157
Molecular Formula:
C9H8O2
Formula Weight:
148.16
MOL File:
491-37-2.mol

4-Chromanone Properties

Melting point:
35-38 °C(lit.)
Boiling point:
127-128 °C13 mm Hg(lit.)
Density 
1.1291
refractive index 
n20/D 1.575(lit.)
Flash point:
>230 °F
storage temp. 
0-10°C
form 
Crystalline Powder, Crystals or Low Melting Mass
color 
White to yellow
Water Solubility 
Slightly soluble in water.
BRN 
124652
InChIKey
MSTDXOZUKAQDRL-UHFFFAOYSA-N
CAS DataBase Reference
491-37-2(CAS DataBase Reference)
NIST Chemistry Reference
4H-1-Benzopyran-4-one, 2,3-dihydro-(491-37-2)
EPA Substance Registry System
4H-1-Benzopyran- 4-one, 2,3-dihydro-(491-37-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  33-36/37/38
Safety Statements  24/25-36-26
WGK Germany  2
RTECS  DJ2981225
TSCA  Yes
HazardClass  IRRITANT
HS Code  29329990
Symbol(GHS):
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
Precautionary statements:

4-Chromanone price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 122351 4-Chromanone 97% 491-37-2 10g $91.4 2018-11-13 Buy
TCI Chemical C1175 4-Chromanone >98.0%(GC) 491-37-2 5g $56 2018-11-22 Buy
TCI Chemical C1175 4-Chromanone >98.0%(GC) 491-37-2 25g $168 2018-11-22 Buy
Alfa Aesar A11242 4-Chromanone, 98+% 491-37-2 5g $45.7 2018-11-13 Buy
Alfa Aesar A11242 4-Chromanone, 98+% 491-37-2 25g $162 2018-11-13 Buy

4-Chromanone Chemical Properties,Uses,Production

Chemical Properties

white to light yellow crystal powder

Purification Methods

It has been recrystallised from pet ether, or purified by dissolving in *C6H6 washing with H2O, drying (MgSO4), evaporating and distilling in a vacuum, then recrystallising the residue. The liquid has a pleasant lemon-like odour. The semicarbazone has m 227o. [Loudon & Razdan J Chem Soc 4299 1954.] The oxime is prepared from 3g of chromanone, 3g NH2OH.HCl in EtOH (50mL), 6g K2CO3 and refluxed on a water bath for 6hours. The solution is poured into H2O, the solid is filtered off, dried and dissolved in hot *C6H6 which on addition of pet ether yields the oxime as glistening needles m 140o. Hydrolysis of this gives very pure chromanone. The benzal derivative is prepared from 3g of chromanone and 4g PhCHO in 50mL EtOH, heated to boiling, 10mL of conc HCl are added dropwise and set aside for several days. The derivative separates and is recrystallised from EtOH to give yellow needles, m 112o [Powell J Am Chem Soc 45 2711 1923]. Reaction with Pb(OAc)4 yields the 3-acetoxy derivative m 74o (from pet ether + trace of EtOAc) [Cavill et al. J Chem Soc 4573 1954, Beilstein 17/10V 14].

4-Chromanone Preparation Products And Raw materials

Raw materials

Preparation Products


4-Chromanone Suppliers

Global( 185)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 sales@capotchem.com China 19918 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21990 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32457 55
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24001 58
Accela ChemBio Inc.
(+1)-858-699-3322
(+1)-858-876-1948 info@accelachem.com United States 12233 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 19923 58
Suzhou Tenglong Technical Co., Ltd. 400-859-2883
0731-82251112-818 viola@huatengsci.com sales_ec@huatengsci.com China 62 55
Shanghai Sphchem Co., Ltd. +86 (21) 5649-1756+86 / 13512199871
+86 (21) 5649-1756 sales@sphchem.com China 3987 55
Creasyn Finechem(Tianjin) Co., Ltd. 86-22-83945878,83945171,83945172
4008266163-06019 export@creasyn.com sale@creasyn.com China 837 68

View Lastest Price from 4-Chromanone manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-18 4-Chromanone
491-37-2
US $1.00 / kg 1kg 99% 100KG career henan chemical co

4-Chromanone Spectrum


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