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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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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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1.Product Characteristics1. Synthetic oil antioxidant TBHQ is a highly efficient, low-toxicity phenolic antioxidant with excellent antioxidant effect, and the antioxidant capacity is up to 5-7 times compared with existing food antioxidants such as BHA, BHT and PG.2. Synergistic: TBHQ can be used together with other antioxidants (such as BHA, B HT) and chelating agents (such as citric acid, etc.).3. High temperature resistance: TBHQ can be used in high temperature processed food, such as frying food, with good thermal stability.4.
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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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TBHQ may volatilize faster than BHT. Therefore, the application of microcapsule technology can solve this problem under high temperature conditions. Using natural antioxidant tea polyphenols, BHA, BHT, and synergistic agent citric acid as the core material, and food grade natural substance p-cyclodextrin as the wall material, microcapsule antioxidant was prepared using microcapsule technology.Water soluble antioxidants are soluble in water and mainly used for food oxidation and discoloration.
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Product ParametersSynthetic grease antioxidant 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.How to use the productPumping methodSeed method of preparation of TBHQ concentrated solution, through the stainless steel quantitative pump in accordance with the prescribed ratio of injection needs to be stabilized with a fixed flow rate, flow rate of fat or oil in the pipeline.
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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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Adding citric acid has a certain synergistic effect on TBHQ antioxidant activity.
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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. It is soluble in ethanol, acetic acid, ethyl ester, isopropanol, ether, and oils, and is almost insoluble in water (25 ℃,<1%; 95 ℃, 5%). TBHQ is an oil soluble antioxidant that can prevent or delay the oxidation and deterioration of fats in food.
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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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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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In view of the advantages of TBHQ and BHT, in recent years, BHT and TBHQ have become widely used antioxidants in fats and oil-rich foods . It should be pointed out that TBHQ and BHT have small molecular weights, are volatile and easy to sublimate, and under heating conditions, both volatilization and depletion are relatively fast, and the antioxidant performance will be generated through a series of complex redox reactions to produce the corresponding transformation products.
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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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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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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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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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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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Antioxidants are substances that prevent or delay food oxidation, improve food stability, and extend storage life.Food antioxidants can be divided into oil-soluble antioxidants and water-soluble antioxidants based on their solubility properties.Oil soluble antioxidants can be soluble in fats and oils, and have a good antioxidant effect on fats and fatty foods, preventing their oxidation, rancidity, and oil burning. Commonly used include butyl ether, dibutyl light toluene, gallic acid propionic acid vinegar, etc.TBHQ may volatilize faster than BHT.
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1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0The oil in oily food undergoes oxidation in the air, producing free radicals and peroxides, which are early indicators of food rancidity. Peroxides further decompose to form small organic compounds such as aldehydes, ketones, and acids, which directly affect the taste and flavor of the product and cause great harm to human health.
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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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1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-02-Tertiary butyl dihydroquinone, also known as tert-butylhydroquinone, white crystalline powder with a point of 126.5-128.5 ℃ point of 300 ℃ CAS No.: 1948-33-0, easily soluble in alcohols and waking up to the majority of fats and oils, especially vegetable oils antioxidant function of the most effective.
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Product Parameters：Tert-butylhydroquinone (TBHQ), also known as tert-butylhydroquinone, white crystalline powder with a point of 126.5-128.5 ℃ point of 300 ℃ CAS No.: 1948-33-0, easily soluble in alcohols and waking up to the majority of fats and oils, especially vegetable oils antioxidant function of the most effective.
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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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1.Product CharacteristicsTertiary butylhydroquinone(TBHQ), white or slightly reddish brown crystalline powder, has a very light special fragrance, almost insoluble in water (about 5 per cent), soluble in ethanol, ethyl acetate, ether and other organic solvents.Tertiary butylhydroquinone has synergistic properties and can be used synergistically with other antioxidants (e.g. BHA, B HT) as well as chelating agents (e.g.
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