isopropyl dibenzoylmethane
1,3-propanedione, 1-(4-(1-methylethyl)phenyl)-3-phenyl-
 
Notes:
causes allergic or photoallergic contact dermatitis; used as a uva filter for sunscreens.
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CAS Number: 63250-25-9Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg: 264-043-9
FDA UNII: 5C2KI275PO
Nikkaji Web: J258.592H
XlogP3-AA: 4.20 (est)
Molecular Weight: 266.33986000
Formula: C18 H18 O2
NMR Predictor: Predict (works with chrome or firefox)
Category: cosmetic UV absorber
 
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Physical Properties:
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Boiling Point: 421.59 °C. @ 760.00 mm Hg (est)
Flash Point: 316.00 °F. TCC ( 157.60 °C. ) (est)
logP (o/w): 3.605 (est)
Soluble in:
 water, 7.789 mg/L @ 25 °C (est)
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Organoleptic Properties:
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
CosIng: cosmetic data
Cosmetic Uses: uv absorbers
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Suppliers:
 None found
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Safety Information:
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: cosmetic UV absorber
Recommendation for isopropyl dibenzoylmethane usage levels up to:
 not for fragrance use.
 
Recommendation for isopropyl dibenzoylmethane flavor usage levels up to:
 not for flavor use.
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Safety References:
EPI System: View
Cancer Citations: Search
Toxicology Citations: Search
EPA Substance Registry Services (TSCA): 63250-25-9
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 91682
National Institute of Allergy and Infectious Diseases: Data
 1-phenyl-3-(4-propan-2-ylphenyl)propane-1,3-dione
Chemidplus: 0063250259
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References:
 1-phenyl-3-(4-propan-2-ylphenyl)propane-1,3-dione
NIST Chemistry WebBook: Search Inchi
Pubchem (cid): 91682
Pubchem (sid): 135048025
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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
HMDB (The Human Metabolome Database): Search
ChemSpider: View
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
 u.v. absorbers 
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Occurrence (nature, food, other): note
 not found in nature
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Synonyms:
1-(4-(1-methyl ethyl)phenyl)-3-phenyl propane-1,3-dione
1-(4-(1-methylethyl)phenyl)-3-phenylpropane-1,3-dione
1-phenyl-3-(4-propan-2-ylphenyl)propane-1,3-dione
1,3-propanedione, 1-(4-(1-methylethyl)phenyl)-3-phenyl-
isopropyl dibenzoyl methane
1-(4-isopropylphenyl)-3-phenyl-1,3-propandione
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Articles:
PubMed: Photoallergic contact dermatitis is uncommon.
PubMed: [Determination of sunscreen agents in cosmetic products by reversed-phase high performance liquid chromatography].
PubMed: Changes in ultraviolet absorption of sunscreens after ultraviolet irradiation.
PubMed: Sunscreen sensitization: a 5-year study.
PubMed: 7 years experience of photopatch testing with sunscreen allergens in Sweden.
PubMed: Contact allergy to 3-(4' methylbenzylidene) camphor and contact and photocontact allergy to 4-isopropyl dibenzoylmethane.
PubMed: Absorption of sunscreens and other compounds through human skin in vivo: derivation of a method to predict maximum fluxes.
PubMed: Determination of threshold UV-A elicitation dose in photopatch testing.
PubMed: Immediate and delayed photocontact dermatitis from isopropyl dibenzoylmethane.
PubMed: [Photoallergic contact eczema caused by 4-isopropyldibenzoylmethane].
PubMed: Contact photoallergy testing of sunscreens in guinea pigs.
PubMed: Allergic contact dermatitis from 4-isopropyl-dibenzoylmethane in a light moisturising cream.
PubMed: [Photoallergic and allergic contact eczema caused by dibenzoylmethane compounds and other sunscreening agents].
PubMed: Sensitivity to sunscreens.
PubMed: Contact allergy to 4-isopropyl-dibenzoylmethane and 3-(4'-methylbenzylidene) camphor in the sunscreen Eusolex 8021.
PubMed: Allergic contact dermatitis from isopropyl dibenzoylmethane.
PubMed: Photoallergic and allergic contact dermatitis from dibenzoylmethanes.
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