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The unsaturated resin polymerization inhibitor MTBHQ (2-tert-butylhydroquinone) plays an important role in resin synthesis and other synthetic reactions. The following is a detailed analysis of its principle of action and effects:Effect Remarkable polymerization inhibition effect: MTBHQ is a kind of high efficient polymerization inhibitor for unsaturated resin. Under normal storage conditions, the general addition amount is only two ten-thousandths of the total amount of resin, and it can play a good effect of polymerization inhibition.
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Polymerization inhibitors MTBHQ, as an efficient polymerization inhibitor, plays a crucial role in the chemical industry. It can effectively prevent or slow down the polymerization reaction, thus ensuring the quality and stability of polymer products. The mechanism of action of Polymerization Inhibitors MTBHQ lies in its ability to react with free radicals in the polymerization reaction, thereby interrupting the growth of the polymerization chain. Free radicals are key species in the polymerization reaction that initiate chain reactions leading to the growth of polymer molecular chains.
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Polymerization inhibitor TBHQ, is a white or slightly reddish-brown crystalline powder with a very light special fragrance, almost insoluble in water (about 5 per cent), soluble in organic solvents such as ethanol, ethyl acetate, ether and so on.1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-02.Product CharacteristicsAntimicrobial effect: Polymerisation inhibitor TBHQ can effectively inhibit the growth of bacteria and moulds.Vegetable oil, animal fat, chewing gum, soup, seasoning, vitamins, grain food, nuts, essence, sausage, animal feed, grain food pac
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The main cause of food deterioration during processing, transportation and storage is lipid oxidation, and the addition of antioxidants is the main means of delaying the oxidation of oil and fat products. Antioxidant is a free radical trapping agent, when it plays an antioxidant role, it can provide active hydrogen to combine with free radicals generated during oxidation of fats and oils, so that the free radicals are converted into stable compounds, blocking the free radical chain reaction, inhibiting lipid peroxidation, slowing down the oxidation of fats and oils and deterioration.
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Possible reaction pathways of 2,5-di-tert-butyl-hydroquinone (2,5-DTBHQ).Valgimigli et al. proposed a mechanism wherein semiquinone (2) reacts with molecular oxygen to produce 2,5-di-tert-butyl-1,4-benzoquinone (2,5-DTBBQ) and hydroperoxyl radical (HOO∙). The semiquinone (2) terminates a second propagation chain via either hydrogen abstraction (Reaction II) or addition reaction (Reaction IV) and these reaction pathways play a very critical role in the inhibition process.
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The pumping method injects the TBHQ concentrated solution prepared by the seed method into a pipeline with a fixed flow rate and flow rate of fat or oil that needs to be stable at a specified proportion through a stainless steel quantitative pump.It is better to mix it with 0010.02% citric acid.This product cannot be mixed with PG (Propyl Gallate) for use.
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Product ParametersTerbutylhydroquinone, is a white or slightly reddish-brown crystalline powder with a very light special fragrance, almost insoluble in water (about 5 per cent), soluble in organic solvents such as ethanol, ethyl acetate, ether and so on.Product AdvantagesNowadays, as the synthesis cost continues to decrease, the application scope is gradually expanded to petrochemical industry, feed industry, electronic industry, battery industry, etc..Our company draws on foreign product synthesis guidance, from 1989 to develop the product, in 1992 was applied to the chlor-alkali industry, a
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Pastry and bread stored in the air for a long time are prone to spoilage due to oxidation of their lipid components. The oxidation of oil components not only causes food discoloration, discoloration, destruction of vitamin A, D, E, and other components, but also produces odor.
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At high temperatures, a series of complex chemical reactions such as oxidation, decomposition, polymerization, and hydrolysis are prone to occur, resulting in a rapid increase in the acid value, peroxide value, and carbon base value of roasted foods. In the later stage of storage and sales, unpleasant odors are easily produced. The use of TBHQ can effectively delay oil oxidation in pastry foods.Baked pastry foods require a higher temperature during the baking process, such as cakes and bread, which require a baking temperature of 160C~190C.
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This product does not affect the color and flavor of food, and is not used for coloring iron containing foods.It can effectively delay oil oxidation, improve food stability, and significantly extend the shelf life of oil and fat rich foods.TBHQ can be used for edible oils, fried foods, dried fish products, biscuits, instant noodles, instant boiled rice, canned dried fruits, pickled meat products, roasted and fried nut foods (supplemented in February 2007), etc.The pumping method injects the TBHQ concentrated solution prepared by the seed method into a pipeline with a fixed flow rate and flow r
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TBHQ can be used for edible oils, fried foods, dried fish products, biscuits, instant noodles, instant boiled rice, canned dried fruits, pickled meat products.This product does not affect the color and flavor of food, and is not used for coloring iron containing foods.The antioxidant effect of this product is very ideal, 5-7 times stronger than BHA, BHT, and PG.
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At high temperatures, a series of complex chemical reactions such as oxidation, decomposition, polymerization, and hydrolysis are prone to occur, resulting in a rapid increase in the acid value, peroxide value, and carbon base value of roasted foods. In the later stage of storage and sales, unpleasant odors are easily produced. The use of TBHQ can effectively delay oil oxidation in pastry foods.However, the oxidation and rancidity of fats and oils, as well as the production of unpleasant flavors, are a problem that troubles many pastry food producers.
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White to light gray crystal or crystalline powder, with special odor, melting point 126.5~128.5℃, boiling point 300℃, slightly soluble in water (25℃, <1%), easily soluble in ethanol (120%), acetone (190%), ethyl acetate (100%), insoluble in toluene, and soluble in animal and vegetable oils. MTBHQ is mainly used as polymer inhibitor, heat and light stabilizer and industrial antioxidant.
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White to light gray crystal or crystalline powder, with unique odor, melting point 126.5~128.5℃, boiling 300℃, slightly soluble in water (25℃, <1%), easily soluble in ethanol (120%), acetone (190%), ethyl acetate (100%), insoluble in toluene, and soluble in animal and vegetable oils. MTBHQ is specially used as polymer inhibitor, heat and mild stabilizer and industrial antioxidant.
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According to the hygiene standard GB2760 (0.4007) for the use of food additives in the People's Republic of China, TBHQ can be used for edible oils, fried foods, dried fish products, biscuits, instant noodles, instant boiled rice, canned dried fruits, pickled meat products, roasted and fried nut foods (supplemented in February 2007), etc. The maximum usage is 0.2g/kg. It is generally recommended to use 0.01~0.02% of the total amount of oil.One dose is versatile and can effectively inhibit the growth of bacteria and molds.
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Hydroquinone Uses:In medicine, hydroquinone is mainly used in the treatment of pigmented skin diseases, such as chloasma and freckles, etc.
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P-Hydroquinone, known as hydroquinone or hydroquinone in Chinese, is an important organic compound with the chemical formula C6H6O2 and a white crystalline form. This compound has a wide range of applications in the chemical industry, the pharmaceutical field, and the photographic industry. In terms of uses, P-Hydroquinone is mainly used in the production of black and white developers, anthraquinone dyes, azo dyes and so on. In the rubber industry, it is often used as an antioxidant, which helps to extend the service life of rubber products.
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In the United States and China, the maximum allowable dosage of TBHQ in food is 200ppm,At present, the production of tert butyl hydroquinone both domestically and internationally adopts the tert butylation method of hydroquinone, as shown in Figure 2. According to different classifications of alkylation reagents.Both domestic and foreign patent literature have reported this process, such as using toluene or xylene as solvents, the selectivity and yield of this reaction are relatively ideal.
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Product ParametersTert butyl hydroquinone (TBHQ), also known as tert butyl hydroquinone, is a white crystalline powder with a temperature range of 126.5-128.5 ℃ and a temperature range of 300 ℃.
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Physical and chemical properties:Density: 1.328g/cm3Melting point: 172-175℃Boiling point: 286℃Flash point: 141.6Refractive index: 1.612Critical temperature: 549.9℃Critical pressure: 7.45MPaIgnition temperature: 516℃Explosion limit (V/V): 15.3%Lower explosion limit (V/V): 1.6 %Property: white needle crystal, discolored by light, with special odorSolubility: soluble in hot water, soluble in cold water, ethanol and ether, slightly soluble in benzene Packaging, storage, transportation:1: 25KG (net weight) kraft paper laminated bag, lined with double polyethylene plastic bag.2: Store in a cool
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Fully dissolve and evenly disperse TBHQ in oil, otherwise it will affect the antioxidant effect.Some organic acids and their derivatives can enhance the activity of TBHQ. It is better to mix it with 0010.02% citric acid.Oil antioxidants are a type of substance that can prevent or delay the deterioration of oils or fatty foods, extend their shelf life, and tert butyl hydroquinone (TBHQ) is a high-quality edible oil antioxidant.It is the most effective antioxidant for most oils, especially vegetable oils.
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TBHQ, also known as tert butyl hydroquinone, is a phenolic oil soluble antioxidant. TBHQ has high efficiency and stability.The US Food and Drug Administration (FDA) allows TBHQ to be used alone or in combination (with BHA or BHT) for oil or fatty foods, including volatile essential oils, with a maximum allowable dosage of 200PPM. The national hygiene standard number is GB276090.4007.The safety of TBHQ has been comprehensively reported, and its acute toxicity belongs to low toxicity level.
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Physical and chemical properties:Density: 1.328g/cm3Melting point: 172-175℃Boiling point: 286℃Flash factor: 141.6Refractive index: 1.612Vital temperature: 549.9℃Crucial stress: 7.45mpaIgnition temperature: 516℃Explosion limit (v/v): 15.3%Lower explosion restrict (v/v): 1.6 %Property: White needle crystal, discolored through light, with special odor.Solubility: Soluble in hot water, soluble in bloodless water, ethanol and ether, slightly soluble in benzene. Packaging, storage, transportation:1: 25kg (internet weight) kraft paper laminated bag, coated with double polyethylene plastic bag.2:
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Researchers have been committed to exploring efficient antioxidant technologies and developing safe products. The successful development and widespread use of antioxidants such as TBHQ have solved the problem of rancidity in oil-rich foods. TBHQ, BHA, BHT, PG, etc.
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