Hydroquinone (chemical formula: C6H4(OH)2), also known as hydroquinone , is a compound formed by replacing two para-hydrogens of benzene with hydroxyl groups.
Hydroquinone is white needle crystal, flammable, soluble in hot water, ether and ethanol, slightly soluble in benzene. It has reducibility. After mild oxidation, brown p-benzoquinone (C6H4O2) is obtained, and p-benzoquinone is reduced to obtain hydroquinone. The p-benzoquinone-hydroquinone redox couple exists in many biomolecules, such as coenzyme Q.
The phenolic hydroxyl hydrogen of hydroquinone is weakly acidic and can lose one or two protons to form the corresponding phenate anion. Mainly used as reducing agent, developer (reducing silver halide to silver), polymerization inhibitor of monomer (acrylic acid, methyl methacrylate), and skin whitening agent. Hydroquinone ether is the raw material in the production of dyes and fragrances.
| Item | Specification |
| Appearance | White acicular crystal |
| Content | ≥99.5% |
| Melting Point | 171-175ºC |
| Residue on ignition | ≤0.05% |
| Fe | ≤0.002% |
| Pb | ≤0.002% |
Usage:
1.Hydroquinone is mainly used as a photographic developer.
2.Hydroquinone and its alkylate are widely used as polymerization inhibitors in monomer storage and transportation, and the concentration is usually about 200ppm.
3.Hydroquinone monomethyl ether is an intermediate of edible oil antioxidant BHA; hydroquinone dimethyl ether is an intermediate of dyes, organic pigments and perfumes; hydroquinone diethyl ether is an intermediate of photosensitive pigments and dyes .
4.Hydroquinone is also used in the preparation of N, N'-diphenyl-p-phenylenediamine, which is an antioxidant and anti-odor agent for rubber and gasoline.
5.Photometric determination of phosphorus, magnesium, niobium, copper, silicon and arsenic. Polarographic and volumetric determination of iridium. Reducing agent of heteropoly acid, reducing agent of copper and gold.
6.In the field of water treatment, adding hydroquinone to the hot water and cooling water of the closed-circuit heating and cooling system can inhibit corrosion of the metal on the water side. Hydroquinone is used as a deoxidizer for boiler water, and hydroquinone is added to it when the boiler water is preheated and deoxygenated to remove residual dissolved oxygen.
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Weijer International Trade (Hebei) Co., Ltd. is an enterprise located in Shijiazhuang, the capital of Hebei Province, China. We manufacture intermediates for several API’s falling under a wide range of therapeutic categories and also manufacture high-value fine chemicals & Specialty chemicals. Our products are sold all over the world (Europe, South America, North America, Southeast Asia, and Africa), and are highly praised by customers. Our company has reasonable prices and safe and efficient transportation methods, and has a strict quality management system and high-quality after-sales service, to meet the product and purchasing needs of new and old customers. Weijier also supports product customization.
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1. How will you deliver the goods?
We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS, and China Air Post. For container products, we can do sea shipping. You also can choose your own shipping forwarder.
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Proforma invoice will be sent first after confirmation of the order, enclosed our bank information. Payment by T/T, Western Union, L/C, Moneygram, BTC, Escrow.
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You can choose your interested products and send inquiry to us. You can chat with us via Trademanager, WhatsApp, and Skype Online. You can send us an email and you will receive our response.
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You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests, we will manufacture the products according to your requests.
5. How long is the lead time?
We deliver goods within 3 days for small order and 7-10 days for bulk order.
6. Is there any discount?
Yes, for larger quantity, we always support with better price.
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