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China
Product Name: 1,4-Pentadien-3-one,1,5-bis(4-methoxyphenyl)-
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2051-07-2

2051-07-2 structure

2051-07-2 structure

Name: 1,5-Bis(p-methoxyphenyl)-3-pentadienone
Chemical Name: bis(4-methoxybenzylidene)acetone
CAS Number: 2051-07-2
Molecular Formula: C₁₉H₁₈O₃
Molecular Weight: 294.344
Catalog: Chemical reagent Organic reagent Fatty ketone (including enol)
Create Date: 2018-05-29 08:00:00
Modify Date: 2025-08-25 17:34:21

Name	bis(4-methoxybenzylidene)acetone
Synonyms	(1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one EINECS 262-278-1 1,4-Pentadien-3-one, 1,5-bis(p-methoxyphenyl)- 1,5-Bis(p-methoxyphenyl)-3-pentadienone DIANISYLIDENEACETONE MFCD00014901 1,4-Pentadien-3-one, 1,5-bis(4-methoxyphenyl)-, (1E,4E)- (1E,4E)-1,5-Bis(4-methoxyphenyl)-1,4-pentadien-3-one bis(p-anisylidene)acetone

Density	1.1±0.1 g/cm3
Boiling Point	492.1±40.0 °C at 760 mmHg
Melting Point	128-129ºC
Molecular Formula	C₁₉H₁₈O₃
Molecular Weight	294.344
Flash Point	243.7±13.8 °C
Exact Mass	294.125580
PSA	35.53000
LogP	4.76
Vapour Pressure	0.0±1.2 mmHg at 25°C
Index of Refraction	1.614

CHEMICAL IDENTIFICATION

RTECS NUMBER :: RZ2476500

CHEMICAL NAME :: 1,4-Pentadien-3-one, 1,5-bis(p-methoxyphenyl)-

CAS REGISTRY NUMBER :: 2051-07-2

BEILSTEIN REFERENCE NO. :: 1885379

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C19-H18-O3

MOLECULAR WEIGHT :: 294.37

WISWESSER LINE NOTATION :: 1OR D1U1V1U1R DO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 180 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#02797

Hazard Codes	Xi: Irritant;
Safety Phrases	S24/25
RTECS	RZ2476500
HS Code	2914509090

Precursor 0
DownStream 4
2573-84-4 33985-68-1 89725-78-0 5397-97-7

HS Code	2914509090
Summary	HS:2914509090 other ketones with other oxygen function VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

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