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4-Phenyl-3-Buten-2-one

HCID 15909
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
122-57-6
Standard SMILES
CC(=O)C=Cc1ccccc1
InChIKey
BWHOZHOGCMHOBV-UHFFFAOYSA-N
Molecular formula
C10H10O
Average molar mass
146.19 g/mol
Monoisotopic mass
146.07316494

Overview

Benzylideneacetone is a flavouring ingredient. Benzylideneacetone is present in hydrolysed soy protein Benzylideneacetone belongs to the family of Phenylpropenes. These are compounds containing a phenylpropene moeity, which consists of a propene substituent bound to a phenyl group.

Names & identifiers

Preferred name
4-Phenyl-3-Buten-2-one
IUPAC
4-phenylbut-3-en-2-one
English name
Benzalacetone
Molecular formula
C10H10O
Molecular weight
146.19

Names & synonyms

DTXSID4025662DTXCID305662RefChem:1071402122-57-63-Buten-2-one, 4-phenyl-4-Phenyl-3-Buten-2-oneMethyl styryl ketone4-Phenyl-but-3-en-2-onebenzalacetone-d4acetylstyroltrans-Benzylideneacetone;BenzalacetoneBENZAL ACETONE
Show more names
(E)-4-Phenylbut-3-en-2-oneBENZYLIDENEACETONEbenzylidene4-Phenylbut-3-en-2-oneBenzalaceton(3E)-4-phenylbut-3-en-2-oneACETOCINNAMONEFEMA 2881
1-Phenylbut-1-en-3-one4-phenyl-3 -buten-2-oneSCHEMBL312972orb1222576orb1679996orb2900216orb3025863SCHEMBL7226394

Database identifiers

CAS
122-57-6
PubChem CID
15909
DTXSID
DTXSID4025662
ChEMBL
CHEMBL3187978
EC Number
204-555-1

Properties

Computed structural propertiesFilling in

XLogP
2.1
Topological polar surface area
17.1 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
1
Rotatable bonds
2
Heavy atoms
11
Formal charge
0
Complexity
152

Experimental & physicochemical properties

SpringerMaterials PropertiesBoiling point
FragrancesFragrance substance (Benzylidene acetone) -> IFRA amendment 40
Food AdditivesFLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
Flavoring AgentsEU Flavoring substances
Solubility · 2 items

insoluble in water; soluble in organic solvents, oils

very soluble (in ethanol)

Boiling Point260 °C
Physical Descriptioncolourless to slightly yellow crystalline solid with a sweet, pungent, creamy, floral odour

Physicochemical properties

Melting point
39 · 39-42 °C(lit.)
Boiling point

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 5 items

This chemical does not meet GHS hazard criteria for 2.6% (50 of 1901) of reports.

Warning

H315 (84.2%): Causes skin irritation [Warning Skin corrosion/irritation]

P261, P264, P272, P280, P302+P352, P321, P332+P317, P333+P317, P362+P364, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1901 reports by companies from 22 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Regulatory Information · 4 items

Chemical: 3-Buten-2-one, 4-phenyl-

Commission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)

Status: Active Update: 17-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/5367

Benzylideneacetone: Does not have an individual approval but may be used under an appropriate group standard

Hazard Classes and CategoriesSkin Irrit. 2 (84.2%)

Toxicology

Carcinogen ClassificationNo indication of carcinogenicity to humans (not listed by IARC).

Safety data

F
8
PPE
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
wgk
3
tsca
TSCA listed
rtecs
EN0330050

Chemistry & industry

Uses & manufacturing

IFRA Fragrance Standards · 6 items

Benzylidene acetone

4-Phenyl-3-buten-2-one; 3-Buten-2-one, 4-phenyl-; Benzilideneacetone; Methyl styryl ketone

IFRA_STD_113.pdf

40

IFRA 51st Amendment - Guidance for the use of IFRA Standards

Prohibition: This material should not be used as a fragrance ingredient

Use Classification · 3 items

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

Flavoring Agents -> JECFA Flavorings Index

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

General Manufacturing Information3-Buten-2-one, 4-phenyl-: ACTIVE
Applications · 6 items

Uses1. It is used for the preparation of spices and galvanized brightener. 2. GB 2760--1996 allows it used as food with spices. Formulated balm, cherries, grapes, berries, anise-based and other flavors for temporary . 3. This product is used as galvanized additives, coating materials to increase the brightness. The dyeing industry uses it as a mordant in dyeing agent to improve the uniformity and firmness, also it can be used for the preparation of spices and flavoring agents. 4. 4-phenyl-butene (3)one-2 is one rodenticide warfarin intermediates. 5. As an aromatic organic substance, it is the most widely superior light additive in acid zinc plating process , in the potassium chloride, ammonium plating process, it can get bright coating in a very wide current density and the temperature range, play a good effect on the coating of the internal stress, anti-corrosion ability. This product is also available anti volatile agent for spices, mordant and fixing agent in dyeing industry, it can also be used to prepare spices flavoring agent. 6. Organic synthesis intermediates. It can be used as a spice anti propellant. In dyeing industry,it is used as mordant , fixing agent, it is used for the preparation of spices or flavoring agents, and preparation for galvanized credit agent.

OccurrenceOccasionally Benzalacetone is used in perfumery for Sweet Pea (used to be a “must” in this type of fragrance), in Appleblossom, etc., often in combination with Neroli and Hyacinth bases. Also used in flavors, particularly in Chocolate, Cocoa, Cherry, Fruit, Nut, Vanilla, etc. - but usually at very low concentration. Concentration in finished product will rarely exceed 0.2 to 0.5 ppm.

Related reactions

60 records
New reaction record
HRID 16663 reaction equation
HRID 16663As productuspto-grants-2010_06
HRID 47921 reaction equation
HRID 47921As reactantuspto-grants-2004_03
HRID 47922 reaction equation
HRID 47922As reactantuspto-grants-2004_03
HRID 86348 reaction equation
HRID 86348As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 88995 reaction equation
HRID 88995As productTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 100247 reaction equation
HRID 100247As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 136664 reaction equation
HRID 136664As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)
HRID 179172 reaction equation
HRID 179172As reactantTraining data from https://doi.org/10.1039/C8SC04228D (6/10)
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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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260 · 260-262 °C(lit.)
Density
1.038 · 1.038
vapor pressure
0.01 mm · 0.01 mm Hg ( 25 °C)
refractive index
1.5836 · 1.5836
FEMA
2881 · 2881 | 4-PHENYL-3-BUTEN-2-ONE
FLAVIS Number
7.024 · 07.024 | 4-Phenylbut-3-en-2-one
Flash point
150 °F · 150 °F
storage temp.
20 °C · Store at <= 20°C.
solubility
Soluble in alcohol, chloroform, diethyl ether.
form
Low Melting Solid
color
Pale yellow to yellow
Odor
Sweet, but rather pungent odor with a creamy-floral note.
Odor Type
spicy
biological source
synthetic
Water Solubility
1.398 g/L · 1.398g/L(25 ºC)
Sensitive
Light Sensitive
Merck
14 · 14,1137
JECFA Number
820 · 820
BRN
742046 · 742046
Stability
Light Sensitive
InChI
1S/C10H10O/c1-9(11)7-8-10-5-3-2-4-6-10/h2-8H,1H3/b8-7+
InChIKey
BWHOZHOGCMHOBV-BQYQJAHWSA-N
SMILES
[H]\C(=C(\[H])c1ccccc1)C(C)=O
LogP
2.04 · 2.04
CAS DataBase Reference
122 · 122-57-6(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
4 · 4-PHENYL-3-BUTEN-2-ONE
FDA 21 CFR
172.515 · 172.515
EWG's Food Scores
1 · 1-3
FDA UNII
3 X40BMT5 · B03X40BMT5
NIST Chemistry Reference
3 · 3-Buten-2-one, 4-phenyl-(122-57-6)
EPA Substance Registry System
Benzylideneacetone (122-57-6)
UNSPSC Code
85151701 · 85151701
NACRES
24 · NA.24
Symbol(GHS)
7 · GHS07
Signal word
Warning
Hazard statements
315 · H315-H317
Precautionary statements
280 · P280
PPE
95 · dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Hazard Codes
Xn,Xi
Risk Statements
36 · 36/37/38-43-42/43
Safety Statements
7 · 7-26-36/37/39-45-37/39-24-36/37-22
WGK Germany
3 · 3
RTECS
330050 · EN0330050
F
8 · 8
TSCA
TSCA listed
HS Code
29143900 · 29143900
Storage Class
11 · 11 - Combustible Solids
Hazard Classifications
2 Skin · Skin Irrit. 2Skin Sens. 1
Toxicity
50 orally · LD50 orally in Rabbit: 2031 mg/kg
REACH Registrations
Active
hs_code
29143900
Toxicity
LD50 orally in Rabbit: 2031 mg/kg
risk_code
36/37/38-43-42/43
Signal word
Warning
Symbol(GHS)
GHS07
hazard_code
Xn,Xi
safety_code
7-26-36/37/39-45-37/39-24-36/37-22
Storage Class
11 - Combustible Solids
Hazard statements
H315-H317
REACH Registrations
Active
Hazard Classifications
Skin Irrit. 2Skin Sens. 1
Precautionary statements
P280

UsesIn perfumery, organic syntheses.

Usesbrightener in acid zinc electroplating,also used as an organic synthesis intermediate in flavor and fragrance, pharmaceutical industries

UsesBenzylideneacetone is used chiefly as a scent in the manufacture of perfume, drugs & electroplating.

General Descriptiontrans- 4-Phenyl-3-buten-2-one is substrate for glutathione transferase. It reacts with methyl- and benzylguanidine to yield aromatic N2-substituted 2-pyrimidinamines.

Preparation methods

PreparationBy condensing benzaldehyde and acetone in the presence of an alkaline condensing agent.

Upstream & downstream products

Upstream raw materials

AcetonePhenylacetoneFormaldehydeWaterDecolorizing charcoalBenzaldehydeDilute hydrochloric acid

Downstream products

Cinnamic acid3,4-Dibromo-4-phenyl-2-butanone3-Cyanopropanoic acid ethyl ester5-Phenylcyclohexane-1,3-dione4-Phenyl-2-butanol(2-Phenyl-cyclopropyl)-acetic acid
Additional notes · 1 item

DefinitionChEBI: Trans-benzylideneacetone is the trans-isomer of benzylideneacetone. It acts as an inhibitor of the enzyme phospholipase A2 (EC 3.1.1.4) of insects like diamond back moth. It has a role as a flavouring agent, a fragrance, a bacterial metabolite and an EC 3.1.1.4 (phospholipase A2) inhibitor.