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CAS No 91-64-5 , chromen-2-one

  • Name: chromen-2-one
  • Synonyms: 2H-Chromen-2-one;chromen-2-one; 2H-1-Benzopyran-2-one; 91-64-5; Tonka bean camphor; Coumarine; Rattex; 1,2-Benzopyrone;cumarin;
  • CAS Registry Number:
  • Transport: 50kg
  • Melting Point: 68-71 ºC
  • Flash Point: 162 ºC
  • Boiling Point: 298 ºC
  • Density: 0.935
  • Refractive index: 1.594
  • Water Solubility: 1.7 G/L (20 ºC)
  • Safety Statements: R20/21/22;R36/37/38;R40
  • Hazard Symbols: Xn: Harmful;
  • Flash Point: 162 ºC
  • EINECS: 202-086-7
  • Molecular Weight: 146.14274
  • InchiKey: ZYGHJZDHTFUPRJ-UHFFFAOYSA-N
  • InChI: InChI=1S/C9H6O2/c10-9-6-5-7-3-1-2-4-8(7)11-9/h1-6H
  • Risk Statements: S26;S36/37
  • Molecular Formula: C9H6O2
  • Molecular Structure:CAS No:91-64-5 chromen-2-one

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91-64-5 Coumarin

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  • China Sunkingchem Pharmaceutical Co., Ltd. [Manufacturer]
  • Tel: +86-28-88007744
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  • Address: A-703, Gaofa Building, Jiuxing Road 6#, Hi-Tech Zone 610041, Chengdu, Sichuan, China.610041 ChengduCHINA Chengdu,nullChina
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91-64-5 Coumarin, 98%

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  • Belgium Alkemi [Manufacturer]
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91-64-5 4-ETHOXYCOUMARIN

  • 4-ETHOXYCOUMARIN
  • United States INTERNATIONAL LABORATORY LIMITED [Manufacturer]
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91-64-5 Coumarin

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  • China Shanghai Synnad Chemical Co., Ltd. [Importer/Exporter]
  • Tel: 86 21 5109 7911
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91-64-5 Coumarin

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  • China Shenzhen sailing chemical Co.,Ltd [Manufacturer]
  • Tel: 86-755-26415005
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  • Address: 1-403 Bei tou hao yuan Nanxing Road Nanshan District Shenzhen, Guangdong 518051 shenzhenCHINA shenzhen,nullChina
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91-64-5 Coumarin

  • China Trust&We Co., Ltd. [Manufacturer]
  • Tel: +86-21-61044582
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91-64-5 Coumarin

  • China YiPeng Chemical [Manufacturers]
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  • Address: Building 4,High-tech Industrial Park,No. 588 Feijiatang Road,Xiacheng District, Hangzhou, China null,ZheJiangChina
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91-64-5 3867.9-K-ME COUMARIN

  • Germany Campro Scientific GmbH [Manufacturer]
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91-64-5 Coumarin

  • China Shanghai Xunxin Chemical Co., Ltd [Manufacturers]
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  • Address: 580 Lane, Kanghong Road, Pudong New District, Shanghai 201315, Shanghai,ShanghaiChina
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91-64-5 ETHOXYCOUMARIN 4-(RG)

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References of chromen-2-one
Title: Coumarin
CAS Registry Number: 91-64-5
CAS Name: 2H-1-Benzopyran-2-one
Synonyms: 1,2-benzopyrone; cis-o-coumarinic acid lactone; cumarin; coumarinic anhydride; tonka bean camphor
Molecular Formula: C9H6O2
Molecular Weight: 146.14
Percent Composition: C 73.97%, H 4.14%, O 21.90%
Literature References: In tonka beans, lavender oil, woodruff (Asperula species), in sweet clover (Melilotus). Crystal and molecular structure: Chem. Commun. (Univ. Stockholm) 1976, 21. Toxicity: Jenner et al., Food Cosmet. Toxicol. 2, 327 (1964). Review: Sethna, Shah, Chem. Rev. 36, 1 (1945); W. C. Meuly in Kirk-Othmer Encyclopedia of Chemical Technology vol. 7 (Wiley-Interscience, New York, 3rd ed., 1979) pp 196-206.
Properties: Orthorhombic, rectangular plates. Pleasant, fragrant odor resembling that of vanilla beans, burning taste. mp 68-70°. bp 297-299°. bp5 139°. One gram dissolves in 400 ml cold, 50 ml boiling water. Freely sol in alc, chloroform, ether, oils; also sol in alkali hydroxide solns. LD50 orally in rats, guinea pigs: 680, 202 mg/kg (Jenner).
Melting point: mp 68-70°
Boiling point: bp 297-299°; bp5 139°
Toxicity data: LD50 orally in rats, guinea pigs: 680, 202 mg/kg (Jenner)
Use: Pharmaceutic aid (flavor).