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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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Eastman in the United States, Camlin in India, and others. 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, it can be divided into tert butyl method, isobutylene method, and MTBE method.
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Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0Product AdvantagesNowadays, as the synthesis cost continues to decrease, the application scope is gradually expanded to petrochemical industry, feed industry, electronic industry, battery industry, etc..Academic research and developmentTertiary butylhydroquinone is a chemically synthesized antioxidant, due to its antioxidant effect, is widely used in the food industry, feed industry, petrochemical industry, paint industry, electronics industry, cosmetics industry, etc., the application prospect is very broad
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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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Tert-butylhydroquinone, white crystalline powder its point is 126.5-128.5 ℃ point of 300 ℃ CAS No.: 1948-33-0, easily soluble in alcohols and waking up, most of the fats and oils, especially for vegetable oils antioxidant function is the most effective.
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However, the active chemical properties of oils and fats are prone to deterioration due to oxidation and other factors. 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.At present, the production of tert butyl hydroquinone both domestically and internationally adopts the tert butylation method of hydroquinone, as shown in Figure 2.
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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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Tert butyl hydroquinone (TBHQ), also known as tert butyl hydroquinone, is a white crystalline powder with a melting point of 126.5-128.5 ℃ and a boiling point of 300 ℃. Its CAS number is 1948-33-0, and it is easily soluble in ethanol and ether. It is the most effective antioxidant for most oils, especially vegetable oils. T-butylhydroquinone, abbreviated as TBHQ, has a molecular formula of Cl0H1402 and a molecular weight of 166.22. [1] It is a white to light gray crystalline or crystalline powder with a very slight special odor.
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Vegetable oil, animal fat, chewing gum, soup, seasoning, vitamins, grain food, nuts, essence, sausage, animal feed, grain food packaging, candy, instant potatoes, flavor substances, yeast, cosmetics, etcAs an antioxidant, it must meet the following requirements as much as possible: no harm to the human body; There should be no bad taste, smell, or color; Low concentration can be applied; If added to oil, it is fat soluble and can still maintain effective antioxidant capacity after processing; Need to be fast, effective, and cost-effectiveAntioxidants are substances that prevent or delay food o
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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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The product is high-quality and cost-effective, making it very suitable for enterprises such as edible oils and instant noodles to use.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. One dose is versatile and can effectively inhibit the growth of bacteria and molds.
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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. It can also be used in non-alcoholic beverages, margarine, and mixed nuts.TBHQ, also known as tert butyl hydroquinone, is a phenolic oil soluble antioxidant. TBHQ has high efficiency and stability, which can extend the shelf life of foods rich in oil and improve food safety.
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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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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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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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1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-02.Product AdvantagesIn the feed industry, there is a widely used antioxidant for ethoxyquinoline, on December 23, 2022 by the European Union formally banned, then terbutylhydroquinone, when the feed industry can completely replace the market, the market application of the forefront of very optimistic.As an antioxidant, it must meet the following requirements as much as possible: no harm to the human body; There should be no bad taste, smell, or color; Low concentration can be applied; If added to oil, it i
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With the development of farming and pet industry, the market demand for feed is increasing day by day, feed antioxidant TBHQ into the people's vision.1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0The experimental results show that adding 002% TBHQ to oil can increase the antioxidant stability of the tested oil by 2-5 times, thus extending the shelf life of oil based foods compared to adding traditional antioxidants; And the antioxidant effect increases with the increase of the addition amount; The use of a small amount of synergist in combination
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Adding citric acid has a certain synergistic effect on TBHQ antioxidant activity.
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There are two types of antioxidants, one is chemical synthesized and the other is natural antioxidants. Chemical synthesis, such as BHT, BHQ, TBHQ, ethoxyquinoline, PE, etc., these are considered to be called chemical synthesis of antioxidants, these antioxidants have been banned in Europe, that in China and the United States, is the amount of additive per kilogram can not be greater than 0.2, these chemical synthesis of antioxidants, it is true that there is now some controversy, but the antioxidant effect is relatively good.
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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.
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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.This product cannot be mixed with PG (Propyl Gallate) for use. Avoid using this product under strong alkaline conditions.Oil is one of the basic nutrients in human diet, and most foods contain abundant oil. It can be said that human health cannot do without oil, and the quality and safety of oil are closely related to human health.
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