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Benzalacetone Suppliers list
Company Name:Wuhan Jadechem International Trade Co.,Ltd  Gold
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Company Name:J & K SCIENTIFIC LTD.  
Tel:400-666-7788 +86-10-82848833;
Company Name:Meryer (Shanghai) Chemical Technology Co., Ltd.  
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Company Name:future industrial shanghai co., ltd  
Company Name:Alfa Aesar  
Tel:400-610-6006; 021-67582000
Benzalacetone Basic information
Flavorants Toxicity Application limitation The maximum amount of food additives permitted maximum allowable residue limits Chemical Properties Application Production method
Product Name:Benzalacetone
Synonyms:(3E)-4-Phenyl-3-buten-2-one;1-Buten-3-one-1-phenyl;2-Phenylvinyl methyl ketone;4-phenyl-3-buten-2-on;4-Phenyl-but-3-en-2-one;4-Phenylbut-3-en-2-one;4-Phenylbutenone;Benzalaceton
Product Categories:Pharmaceutical Intermediates;Aromatic Ketones (substituted);Aromatics;Building Blocks;C10;Carbonyl Compounds;Chemical Synthesis;Ketones;Organic Building Blocks
Mol File:122-57-6.mol
Benzalacetone Structure
Benzalacetone Chemical Properties
mp 39-42 °C(lit.)
bp 260-262 °C(lit.)
density 1.038
vapor pressure 0.01 mm Hg ( 25 °C)
FEMA 2881
refractive index 1.5836
Fp 150 °F
Sensitive Light Sensitive
Merck 14,1137
BRN 742046
CAS DataBase Reference122-57-6(CAS DataBase Reference)
NIST Chemistry Reference3-Buten-2-one, 4-phenyl-(122-57-6)
EPA Substance Registry System3-Buten-2-one, 4-phenyl-(122-57-6)
Safety Information
Hazard Codes Xn,Xi
Risk Statements 36/37/38-43-42/43
Safety Statements 7-26-36/37/39-45-37/39-24-36/37-22
WGK Germany 3
RTECS EN0330050
HS Code 29143900
MSDS Information
4-Phenyl-3-buten-2-one English
ACROS English
SigmaAldrich English
ALFA English
Benzalacetone Usage And Synthesis
FlavorantsOur GB2760-1996 provisions temporarily allow benzalacetone as a food spice, it is used to modulate sweet pea, cocoa, nuts, cherries, fruit flavor aroma, also used as floral flavor variable swap and anti-propellant, because of the stimulating effect on the skin, it is generally not used in cosmetics. Also benzalacetone can also be used as a mordant, fixing agent and preparation galvanized credit agent in dyeing industry. Credit agent is an organic compound capable of producing bright and leveling effect. Usually it contains aromatic aldehydes or ketones and certain heterocyclic aromatic aldehydes, ie coumarin, vanillin, benzalacetone, its molecular structure contains a carbonyl group, just keeps this structure intact, substituting various substituents, it can produce many kinds of compounds having light effects. Among these, benzalacetone displays best effects, domestic commercial additives are mostly based on such benzalacetone predominating brightener. The most commonly used method is based on the preparation of benzaldehyde and acetone as raw materials, to carry out the Claisen reaction, in the presence of a base (sodium hydroxide or sodium carbonate), aldehydes and ketones condensate, after completing the reaction, diluted hydrochloric acid is added and adjusted to pH = 6-7, set still for stratification, the upper yellow oil is separated, in order to maximize the yield, the lower layer is extracted with benzene, the extract is dried after recovery of benzene, and the oil is combined, then washed with water, separate the oil , bleached with activated carbon, filtered, and purified by vacuum steam distillation, cooled and crystallized, to get crude benzalacetone .
Benzalacetone is also known as 4-phenyl-3-butene-2-one, dibenzylideneacetone, cinnamyl methyl ketone, benzal acetone, methyl styryl ketone. The product abtained by vacuum distillation system is colorless to pale yellow shiny lamellae. It owns sweet pea fragrance and spicy and pungent flavor, changes to deep color exposed in light, combustible, prolonged heat leading to decomposition. Naturally it presents in hydrolyzed soy protein. The formations include cis and trans. Relative molecular mass is 146.19. The relative density is 1.0076 (47.3 ℃). The freezing point is 39 ℃, the melting point is 42 ℃. The boiling point is 261 ℃, 211 ℃ (26.664 × 103Pa), 187.8 ℃ (13.332 × 103Pa), 161.3 ℃ (5.333 × 103Pa), 143.8 ℃ (2.666 × 103Pa), 127.4 ℃ (1.333 × 103Pa), 112.2 ℃ (0.666 × 103Pa ), 81.7 ℃ (0.133 × 103Pa). The refractive index is 1.5836 (45.9 ℃). It is slightly soluble in water and petroleum ether, slightly soluble in benzene, soluble in ethanol, benzene, ether, chloroform and sulfuric acid. It displays a reddish color while reacting with sulfuric acid, this feature can be used to detect the product.
The above information is edited by the Chemicalbook of Tian Ye.
ToxicityIt can be safely used in food (FDA, §172.515,2000).
Application limitationFEMA (mg / kg): Soft drinks 0.82 ; cold drinks 0.84; confectionery 3.7; bakery 4.5;jelly and pudding 2.1 ; shortening 0.20.
The maximum amount of food additives permitted maximum allowable residue limitsThe maximum amount of food additives permitted maximum allowable residue limits
Chemical PropertiesIt is colorless crystals. It has a coumarin odor. It is soluble in alcohol, ether, benzene and chloroform, slightly soluble in water and petroleum ether.
Application1. 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.
Production methodUsing Benzaldehyde for raw materials, and carrying out condensation reaction with acetone . Benzaldehyde and acetone, mixed with water, cooled slowly, added 10% sodium hydroxide solution, the temperature controlled at 25-31°C, After the addition, the stirring was continued for 1h. Then diluted hydrochloric acid was added to pH 6-7, set still for 1h, isolated as a yellow oil. Lower layer was extracted with benzene, the extract and oil were combined, washed twice with water, after the separation the layer of water, recovered benzene, and then dried over calcium chloride, dry decolorizing charcoal was added , filtered and the filtrate vacuum distillation derived products. . Fixed material consumption : benzaldehyde 1700kg / t, acetone 2900kg / t, caustic soda (40%) 500kg / t.
Chemical PropertiesYellow Solid
Usagebrightener in acid zinc electroplating,also used as an organic synthesis intermediate in flavor and fragrance, pharmaceutical industries
Benzalacetone Preparation Products And Raw materials
Raw materialsAcetone-->Formaldehyde-->Water-->Benzaldehyde-->Phenylacetone
Preparation ProductsCinnamic acid -->3,4-DIBROMO-4-PHENYL-2-BUTANONE
Tag:Benzalacetone(122-57-6) Related Product Information
PHENYL VALERATE 3-Oxobutanenitrile 2,4-Pentanedione Phenylacetone Methyl salicylate 1-Bromo-1-phenyl-2-propanone Parathion-methyl Propiophenone Maleic anhydride POLY(1-BUTENE) Tribenuron methyl PHENYL RESIN Thiophanate-methyl 1-BUTENE Acetone DIBENZYLIDENEACETONE Pyruvic acid Methyl vinyl ketone