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| Classification | Paint Additives |
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C13H10O
119-61-9
Uses:
1.Benzophenone is an ultraviolet absorber (absorbs ultraviolet wavelength of 290-360 nanometers) and initiator, organic pigments, pharmaceuticals, spices, pesticides, intermediates.
2. the pharmaceutical industry for the production of bicyclic ethylpiperidine, benzyltropine hydrobromide, benzylhydramine salt, etc., but also styrene polymerization inhibitors and spice flavoring agent, can give the spice with a sweet scent, used in many perfumes and soaps with flavors.
3.It can be used in sunscreen oil/cream in cosmetic industry.
| FEMA | 2134 | BENZOPHENONE |
| LogP | 3.18 at 25℃ |
| (IARC) carcinogen classification | 2B (Vol. 101) 2013 |
| overview | benzophenone is a colorless prismatic crystal with sweet and rose flavor, melting point 47-49 ℃, relative density 1.1146, refractive index 1.6077. Soluble in ethanol, ether, chloroform and other organic solvents and monomers, insoluble in water. It is a free radical photoinitiator, mainly used in free radical UV curing systems, such as coatings, inks, adhesives, etc. It is also an intermediate for organic pigments, medicines, fragrances, and pesticides. In the pharmaceutical industry, it is mainly used to produce bicyclohexpiperidine, benzopropine hydrobromide, diphenhydramine hydrochloride, etc. This product is also a styrene polymerization inhibitor and fragrance fixer, which can give the fragrance a sweet flavor and is widely used in perfumes and soap flavors. The product should be moisture-proof, sun-proof, and away from heat sources during storage and transportation, and its temperature should not exceed 45°C. |
| application of benzophenone in sunscreen cosmetics | sunscreen cosmetics are hot new products in the cosmetics field. at present, almost all sunscreen products on the market contain benzophenone compounds. Benzophenone compounds can protect the skin from damage and are often used to produce high-quality products. In recent years, the consumption of benzophenone in cosmetics has been increasing. Recent studies believe that fluorescence is also a harmful ultraviolet light source, so the application range of benzophenone in the field of cosmetics has been expanding to hair conditioners, lotions and lipstick. In addition, it is also a fragrance fixer, which can give spices a sweet smell and is used in many perfumes and soap flavors. Banana Boat has developed a UVA ultraviolet absorption technology called AvoTriplex, which is based on benzophenone and adds a stabilizer to prevent benzophenone from decomposing in sunlight. A enhancer is also added to the formula, which can work synergistically with the stabilizer to optimize the sunscreen ability of benzophenone. |
| synthesis and kinetics of large molecular weight benzophenone photoinitiator | using 4-hydroxybenzophenone (HBP), toluene -2,4-diisocyanate (TDI) and 4,4 ‘-dihydroxybenzophenone (DHBP) as raw materials, a large molecular weight benzophenone photoinitiator: HBP-TDI-DHBP-TDI-HBP(HTDTH) was synthesized through a two-step reaction. The photopolymerization kinetics of HTDTH was studied by real-time infrared. The results show that HTDTH is an effective photoinitiator. When HTDTH/amine light-initiated system is used to initiate the polymerization of dipropylene glycol diacrylate (TPGDA), the reaction rate (Rp) and monomer final conversion rate (P) increase simultaneously with the increase of amine and initiator concentration.>2008, vol. 26, No. 04, author: Wang Ying, Xiao Pu, Dai Mingzhi, Wu Gangqiang, Shi Suqing, Nie Jun, |
| anhydrous indicator | benzophenone is widely used as an indicator in synthetic experiments and can be used as an indicator for treating toluene, benzene, THF, acetonitrile, etc. Indicator; if a beautiful blue appears after adding, it can be distilled and used. It is best stored in sodium, but there are many opinions about why blue is generated. Mo Zong I, not the same. The reason is now extracted from a foreign book on the mechanism of the reaction: The general meaning of the translation into Chinese is: ‘The free radical anion generated by ketone is called carbonyl radical, and benzophenone is used as an indicator. The oxygen atom in the ketone seizes the electrons in the sodium and generates the dark blue carbonyl radical; the free radical is stable in terms of three-dimensional and electrical properties, and is mainly used to indicate the’oxygen-free condition ‘! Wide range of uses. ‘. After adding benzophenone, the bluer the solution, the less oxygen in the solution, and indirectly the less moisture. However, whether it turns blue is related to the amount of benzophenone added and the solvent to be treated. THF(300ml) contains more water and needs to be refluxed for more than 6 hours. Of course, it is related to the amount of solvent to be treated. The more it is, the longer the time, and the less the reflux time with less water in toluene, benzene, etc. It is better to add ordinary desiccants such as potassium carbonate, sodium sulfate, sodium hydroxide, etc. for pretreatment, so the time will be shortened. |
| toxicity | GRAS(FEMA). LD502897mg/kg (mouse, oral). |
| usage limit | FEMA(mg/kg): soft drink 0.50; Cold drink 0.61; Candy 1.7; Baked food 2.4. Moderate limit (FDA § 172.515,2000). |
| use | used for photosensitive resins, coatings, adhesives, etc. GB 2760-1996 provisions are allowed to use food spices. Mainly used to prepare vanilla, cream and other flavors and as fixative. It can be used as a fixative. Its weak sweet fragrant leaf fragrance can be widely used in medium and low-grade flavors, such as rose, geranium, sweet bean flower, shy flower, lily of the valley, sunflower, grass orchid, hawthorn flower, fragrant Wei and oriental fragrance. Soap is also used as an antioxidant, and occasionally in trace amounts of edible flavors such as almonds, berries, fresh fruits, cream, nuts, peaches, vanilla beans, etc. Br> Benzophenone is an intermediate of ultraviolet absorber, organic pigment, medicine, perfume and pesticide. In the pharmaceutical industry, it is used to produce bicyclohexpiperidine, benzoate hydrobromide, diphenhydramine hydrochloride, etc. The product itself is also a styrene polymerization inhibitor and fragrance fixer. It can give the essence a sweet smell and is used in many perfumes and soap flavors. commonly used in soap essence, used in the production of ultraviolet absorbers, pigments, medicines and reagents, and is also a low-temperature rapid vulcanizing agent for fluororubber UV curable coatings and inks used in UV products photoinitiators, pharmaceutical intermediates, fragrances, light stabilizers and other aspects pigments, medicines, fragrances, pesticides intermediates, it can also be used as a photoinitiator for UV-curable resins, inks and coatings Benzophenone is an ultraviolet absorber and initiator, an intermediate for organic pigments, medicines, fragrances, and pesticides. It is used in the pharmaceutical industry to produce bicyclo. Piperidine, benzophenol hydrobromide, diphenhydramine salt, etc., are also styrene polymerization inhibitors and fragrance fixers, which can give fragrances a sweet breath and are used in many perfumes and soap fragrances. |
| production method | there are many methods. 1. It is obtained by condensation of benzyl chloride with benzene and oxidation by nitric acid. 2. It is obtained by condensation of benzene with carbon tetrachloride and hydrolysis. In the laboratory, aluminum trichloride is used as a catalyst to react benzene with benzoyl chloride. It is obtained by condensation of benzene and benzoyl chloride in the presence of aluminum chloride, and then crystallizing in ethanol. |
| category | flammable liquid |
| toxicity classification | poisoning |
| acute toxicity | oral administration-mouse LD50: 2895 mg/kg; Abdominal cavity-mouse LD50: 727 mg/kg |
| Explosive hazard characteristics | Intense reaction with oxidant |
| flammability hazard characteristics | it is more flammable when heated; combustion produces stimulating smoke |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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