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General Material Information

Preferred name coumarin
Trivial Name Coumarin
Short Description 1-benzopyran-2-one
Formula C9 H6 O2
CAS Number 91-64-5
ECHA Number 202-086-7
FDA UNII A4VZ22K1WT
Nikkaji Number J3.218B
Beilstein Number 0383644
MDL MFCD00006850
Bio Activity Summary External link
NMR Predictor External link
FDA Mainterm 91-64-5 ; COUMARIN--PROHIBITED
Synonyms
  • benzo-alpha-pyrone
  • 2H- benzo(b)pyran-2-one
  • 2H- benzo[b]pyran-2-one
  • 2-oxo-1,2-benzopyran
  • 2-oxo-2H-1-benzopyran
  • o-oxo-1,2-benzopyran
  • ortho-oxo-1,2-benzopyran
  • 1-benzopyran-2-one
  • 2H- benzopyran-2-one
  • 2H-1-benzopyran-2-one
  • 2H-1-benzopyran, 2-oxo-
  • 1,2-benzopyrone
  • chromen-2-one
  • 2H- chromen-2-one
  • chromenone
  • cis-o- coumaric acid anhydride
  • coumarin (ex tonka beans)
  • coumarin crystals
  • coumarin natural
  • coumarin powder 60 mesh
  • coumarin, chinese
  • coumarin, japan
  • coumarine
  • coumarine ( ex china )
  • coumarine rhodiantal
  • (Z)-o- coumarinic acid lactone
  • (Z)-ortho- coumarinic acid lactone
  • coumarinic anhydride
  • coumarinic lactone
  • cumarin
  • o- hydroxycinnamic acid delta-lactone
  • ortho- hydroxycinnamic acid delta-lactone
  • o- hydroxycinnamic acid lactone
  • ortho- hydroxycinnamic acid lactone
  • o- hydroxycinnamic lactone
  • ortho- hydroxycinnamic lactone
  • 3-(2-hydroxyphenyl)-2-propenoic d-lactone
  • 3-(2-hydroxyphenyl)-delta-lactone
  • 2-propenoic acid, 3-(2-hydroxyphenyl)-, d-lactone
  • 2-propenoic acid, 3-(2-hydroxyphenyl)-d-lactone
  • tonka bean camphor
  • 2H-1-Benzopyran-2-one
  • 1,2-Benzopyrone
  • cis-o-Coumarinic acid lactone
  • o-Hydroxycinnamic acid lactone
  • 2-Propenoic acid, 3-(2-hydroxyphenyl)-, δ-lactone
  • Benzo-α-pyrone
  • Rattex
  • 5,6-Benzo-2-pyrone
  • NSC 8774
  • 2-Chromenone
  • 2H-Chromen-2-one
  • 2H-Benzopyran-2-one
  • Lympedim
  • Rhodiascent Extra Pure

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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Literature & References

chromen-2-one
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:91-64-5
Pubchem (cid):323
Pubchem (sid):134971583
Flavornet:91-64-5
Pherobase:View
Publications by PubMed
Effect of flavors on the viscosity and gelling point of aqueous poloxamer solution.
Quantification of flavor-related compounds in the unburned contents of bidi and clove cigarettes.
Biocatalytic production of dihydrocoumarin from coumarin by Saccharomyces cerevisiae.
Determination of volatile flavor components in danggui cultivars by solvent free injection and hydrodistillation followed by gas chromatographic-mass spectrometric analysis.
Concentrations of nine alkenylbenzenes, coumarin, piperonal and pulegone in Indian bidi cigarette tobacco.
Identification and quantification of aroma-active components that contribute to the distinct malty flavor of buckwheat honey.
Constituents of the essential oil of the Cinnamomum cassia stem bark and the biological properties.
Solid phase microextraction of alkenylbenzenes and other flavor-related compounds from tobacco for analysis by selected ion monitoring gas chromatography-mass spectrometry.
NTP Toxicology and Carcinogenesis Studies of Coumarin (CAS No. 91-64-5) in F344/N Rats and B6C3F1 Mice (Gavage Studies).
Reactions in selected patients to 22 fragrance materials.
Full evaporation dynamic headspace and gas chromatography-mass spectrometry for uniform enrichment of odor compounds in aqueous samples.
Volatiles of French ferns and "fougère" scent in perfumery.
Volatile components of whole and different plant parts of bastard balm (Melittis melissophyllum L., Lamiaceae) collected in Central Italy and Slovakia.
Predication of Japanese green tea (Sen-cha) ranking by volatile profiling using gas chromatography mass spectrometry and multivariate analysis.
Characterization and potential uses of Copaifera langsdorfii seeds and seed oil.
Roles of the mushroom bodies in olfactory learning and photoperiodism in the blow fly Protophormia terraenovae.
Metabolism and biochemical effects of nicotine for primary care providers.

Other Information

(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
CHEBI:View
CHEMBL:View
Golm Metabolome Database:Search
Metabolomics Database:Search
KEGG (GenomeNet):C05851
HMDB (The Human Metabolome Database):HMDB01218
FooDB:FDB011938
Export Tariff Code:2932.21.0000
Typical G.C.
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View
Wikipedia:View

Suppliers

ACS International Alfa Biotechnology
Anhui Haibei Augustus Oils
Aurochemicals Berjé
BOC Sciences Charkit Chemical
Citrus and Allied Essences CJ Latta & Associates
Creatingperfume.com De Monchy Aromatics
Diffusions Aromatiques ECSA Chemicals
Ernesto Ventós Eternis Fine Chemicals
Excellentia International ExtraSynthese
Fleurchem Foodchem International
Foreverest Resources Frey + Lau
George Uhe Company Glentham Life Sciences
Global Essence Indenta Group
Indukern F&F Jiangyin Healthway
John Kellys (London) K.L. Koh Enterprise
Lluch Essence M&U International
Mane Moellhausen
OQEMA PCW France
Pearlchem Corporation Pell Wall Perfumes
Penta International PerfumersWorld
Perfumery Laboratory Phoenix Aromas & Essential Oils
Prinova Prodasynth
R C Treatt & Co Ltd Reincke & Fichtner
Sarchem Laboratories Sigma-Aldrich
SRS Aromatics Stort Chemicals
Sunaux International Taytonn ASCC
The Good Scents Company The John D. Walsh Company
The Lermond Company The Perfumers Apprentice
Ungerer & Company United International
Vigon International Vistachem
ACS International GmbH Augustus Oils Ltd
Berje Inc. Charkit Chemical Corporation
CJ Latta & Associates, LLC Fleurchem, Inc.
Foreverest Resources Ltd. Glentham Life Sciences Ltd
Global Essence Inc. Indukern, S.A. F&F Ingredients Division
Jiangyin Healthway International Trade Co., Ltd Lluch Essence S.L.
M&U International LLC Moellhausen S.P.A.
Penta International Corporation PerfumersWorld Ltd.
SRS Aromatics Ltd Taytonn ASCC Pte Ltd
The John D. Walsh Company, Inc R C Treatt and Co Ltd
Qingdao Free Trade Zone United International Co Ltd Ernesto Ventós S.A.

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 146.14521789551
Melting Point 68 to 74°C @ 760 mm Hg
Boiling Point 297 to 301°C @ 760 mm Hg
Boiling Point 161 to 162°C @ 14 mm Hg
Vapor Pressure 0.1 mmHg @ 20 °C
Vapor Density 5.1
Flash Point TCC Value 93 °C TCC
logP (o/w) 1.39
Shelf life 24 months (or longer if stored properly.)
Storage notes Store in cool, dry place in tightly sealed containers, protected from heat and light.
Solubility
alcohol Yes
kerosene Yes
paraffin oil Yes
water, 1900 mg/L @ 20 °C (exp) Yes
water No
isopropyl myristate No
Stability
non-discoloring Unspecified

Organoleptic Properties

Odor Type: Tonka
sweet, hay, tonka, hay new mown hay, coumarinic
Odor strength medium , recommend smelling in a 10.00 % solution or less
Substantivity 364 hour(s) at 10.00 % in dipropylene glycol
Luebke, William tgsc, (1982) At 10.00 % in dipropylene glycol. sweet hay tonka new mown hay
General comment Sweet, stinging, coconut note
Arctander describes it as “Sweet, herbaceous-warm, somewhat spicy odor, in extreme dilution more haylike, nut- Iike, tobacco-like… Extensively used in perfumery to support herbaccous odors, Lavender, Lavandin, Rosemary, Citrus oils, Oakmoss, etc., and as a fixative in numerous types of fragrances; Almost a standard ingredient in Fougère types with Amylsalicylate and Lavender-notes, with or without Oakmoss.” Sweet, hay, tonka, new-mown-hay

Occurrences

Safety Information

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xn - Harmful.
R 22 - Harmful if swallowed.
R 43 - May cause sensitisation by skin contact.
S 02 - Keep out of the reach of children.
S 20/21 - When using do not eat, drink or smoke.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 37/39 - Wear suitable gloves and eye/face protection.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
Acute toxicity, Oral (Category 3), H301
Acute aquatic toxicity (Category 3), H402
Chronic aquatic toxicity (Category 3), H412
GHS Label elements, including precautionary statements
Pictogramskull.jpg
Signal word Danger
Hazard statement(s)
H301 - Toxic if swallowed
H402 - Harmful to aquatic life
H412 - Harmful to aquatic life with long lasting effects
Precautionary statement(s)
P264 - Wash skin thouroughly after handling.
P270 - Do not eat, drink or smoke when using this product.
P273 - Avoid release to the environment.
P301 + P310 - IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P321 - Specific treatment (see supplemental first aid instructions on this label).
P330 - Rinse mouth.
P405 - Store locked up.
P501 - Dispose of contents/ container to an approved waste disposal plant.
Oral/Parenteral Toxicity:
oral-rat LD50 293 mg/kg
Food and Cosmetics Toxicology. Vol. 12, Pg. 385, 1974.

oral-mouse LD50 196 mg/kg
Yakugaku Zasshi. Journal of Pharmacy. Vol. 83, Pg. 1124, 1963.

intraperitoneal-mouse LD50 220 mg/kg
BEHAVIORAL: ANALGESIA
Arzneimittel-Forschung. Drug Research. Vol. 15, Pg. 897, 1965.

oral-guinea pig LD50 202 mg/kg
LIVER: OTHER CHANGES BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Food and Cosmetics Toxicology. Vol. 2, Pg. 327, 1964.

oral-man TDLo 87 mg/kg/17W-I
LIVER: LIVER FUNCTION TESTS IMPAIRED
Human Toxicology. Vol. 8, Pg. 501, 1989.

Dermal Toxicity:
subcutaneous-mouse LD50 242 mg/kg
Yakugaku Zasshi. Journal of Pharmacy. Vol. 83, Pg. 1124, 1963.

Inhalation Toxicity:
Not determined

Safety in use information

Category:
fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
IFRA Critical Effect:
Dermal sensitization and systemic toxicity
View the IFRA Standard
View IFRA Standards Library for complete information.
Please review Amendment 49 IFRA documentation for complete information.
IFRA RESTRICTION LIMITS IN THE FINISHED PRODUCT (%):
Category 1: Products applied to the lips
0.089 %
Category 2: Products applied to the axillae
0.080 %
Category 3: Products applied to the face/body using fingertips
0.089 %
Category 4: Products related to fine fragrance
1.50 %
Category 5: Products applied to the face and body using the hands (palms), primarily leave-on
Category 5A: Body lotion products applied to the body using the hands (palms), primarily leave-on
0.38 %
Category 5B: Face moisturizer products applied to the face using the hands (palms), primarily leave-on
0.11 %
Category 5C: Hand cream products applied to the hands using the hands (palms), primarily leave-on
0.16 %
Category 5D: Baby Creams, baby Oils and baby talc
0.035 %
Category 6: Products with oral and lip exposure
0.0024 %
Category 7: Products applied to the hair with some hand contact
Category 7A: Rinse-off products applied to the hair with some hand contact
0.18 %
Category 7B: Leave-on products applied to the hair with some hand contact
0.18 %
Category 8: Products with significant anogenital exposure
0.035 %
Category 9: Products with body and hand exposure, primarily rinse off
0.52 %
Category 10: Household care products with mostly hand contact
Category 10A: Household care excluding aerosol products (excluding aerosol/spray products)
0.52 %
Category 10B: Household aerosol/spray products
1.60 %
Category 11: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate
Category 11A: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
0.035 %
Category 11B: Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
0.035 %
Category 12: Products not intended for direct skin contact, minimal or insignificant transfer to skin
33.00 %
Notes:
IFRA FLAVOR REQUIREMENTS:

Due to the possible ingestion of small amounts of fragrance ingredients from their use in products in Categories 1 and 6, materials must not only comply with IFRA Standards but must also be recognized as safe as a flavoring ingredient as defined by the IOFI Code of Practice (www.iofi.org). For more details see chapter 1 of the Guidance for the use of IFRA Standards.

Recommendation for coumarin flavor usage levels up to:
not for flavor use.

Safety references

European Food Safety Authority (EFSA) reference(s):

Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) related to Coumarin.
View page or View pdf

Coumarin in flavourings and other food ingredients with flavouring properties - Scientific Opinion of the Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food (AFC)
View page or View pdf

EPI System: View
NIOSH International Chemical Safety Cards:search
Chemical Carcinogenesis Research Information System:Search
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
Carcinogenic Potency Database:Search
EPA GENetic TOXicology:Search
EPA Substance Registry Services (TSCA):91-64-5
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :323
National Institute of Allergy and Infectious Diseases:Data
SCCNFP:opinion
WISER:UN 2811
WGK Germany:1
chromen-2-one
Chemidplus:0000091645
EPA/NOAA CAMEO:hazardous materials
RTECS:91-64-5