产品信息 - Pharmaceutical Hydroquinone with CAS No. 123-31-9->active pharmaceutical ingredient

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Pharmaceutical Hydroquinone with CAS No. 123-31-9

产品分类 :

化學->活性醫療成份

Pharmaceutical Hydroquinone with CAS No. 123-31-9

产品规格

Model No: cy123-31-9

Country	CN
Brand	chenyi
Packing	25kg
Minimum Order	25
Payment Term	L/C,T/T

产品描述

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<span style="font-size:12px;">Our company supplies products as well.</span>
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<span style="font-size:12px;">1. Organic Intermediates 2. Pharmaceutical Raw Materials 3. additive</span>
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<span style="font-size:12px;">4. Plant Extracts 5. Catalysts And Auxiliaries 6. organic materials</span>
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<span style="font-size:12px;">7. Inorganic Salt 8. Agricultural Chemicals 9. dyes and pigments</span>
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<span style="font-size:12px;">10. flavors and fragrances</span>
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<span style="font-size:12px;">Pharmaceutical Hydroquinone with CAS No. 123-31-9</span>
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<span style="font-size:12px;">Product Overview</span>
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<span style="font-size:12px;">Hydroquinone is an organic compound in which two para hydrogens of benzene are replaced by hydroxyl groups. White crystals. Also called hydroquinone. Poisonous, adults mistaken for 1 gram, you can have headaches, dizziness, tinnitus, pale and other symptoms. Hydroquinone encounters fire, heat and flammability, reacts with strong oxidants, and releases carbon monoxide by high heat. Hydroquinone is mainly used in the preparation of black and white developer, anthraquinone dyes, azo dyes, rubber antioxidants, stabilizers and antioxidants. Hydroquinone is flammable and easily exposed to light in the air. Its aqueous solution can be oxidized to brown in air and oxidized faster in alkaline media. Soluble in ether and ethanol, slightly soluble in benzene. It is reducible, and the brown benzoquinone (C6H4O2) is obtained through mild oxidation. The benzoquinone is reduced to obtain hydroquinone. P-benzoquinone-hydroquinone redox pairs exist in many biomolecules, such as coenzyme Q and so on.</span>
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<span style="font-size:12px;">The phenolic hydroxyl of hydroquinone is weakly acidic and can lose one or two protons to generate the corresponding phenolate anion. It is mainly used as reducing agent, developer (reduction of silver halide to silver), polymerization inhibitor of monomer (acrylic acid, methyl methacrylate), and skin whitening agent. Hydroquinone ether is a raw material for the production of dyes and perfumes.</span>
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<span style="font-size:12px;">Photographic Grade Hydroquinone</span>
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<span style="font-size:12px;">Physical Properties</span>
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<span style="font-size:12px;">CAS No. :<span class="Apple-tab-span"> </span>123-31-9</span>
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<span style="font-size:12px;">MF:<span class="Apple-tab-span"> </span>C6H6O2</span>
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<span style="font-size:12px;">MW:<span class="Apple-tab-span"> </span>110.11</span>
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<span style="font-size:12px;">EINECS:<span class="Apple-tab-span"> </span>204-617-8</span>
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<span style="font-size:12px;">Melting Point: 172-175 °C(lit.)</span>
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<span style="font-size:12px;">Boiling Point: 285 °C(lit.)</span>
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<span style="font-size:12px;">Density: 1.32</span>
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<span style="font-size:12px;">Vapor Density: 3.81 (vs air)</span>
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<span style="font-size:12px;">Vapor Pressure: 1 mm Hg ( 132 °C)</span>
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<span style="font-size:12px;">Flash Point: 165 °C</span>
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<span style="font-size:12px;">Storage: Refrigerator</span>
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<span style="font-size:12px;">Solubility: H2O: 50 mg/mL, clear</span>
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<span style="font-size:12px;">Acidity coefficient (pKa): 10.35(at 20℃)</span>
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<span style="font-size:12px;">Form: Needle-Like Crystals or Crystalline Powder</span>
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<span style="font-size:12px;">Color: White to off-white</span>
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<span style="font-size:12px;">Solubility: 70 g/L (20 ºC)</span>
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<span style="font-size:12px;">Sensitivity: Air & Light Sensitive</span>
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<span style="font-size:12px;">Application</span>
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<span style="font-size:12px;">1. Hydroquinone is mainly used as a photographic developer. Hydroquinone and its alkylates are widely used as polymerization inhibitors added during the storage and transportation of monomers. The commonly used concentration is about 200 ppm.</span>
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<span style="font-size:12px;">2. Used as an antioxidant for rubber and gasoline.</span>
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<span style="font-size:12px;">3. In the field of treatment, hydroquinone is added to the hot water and cooling water of the closed-circuit heating and cooling system, which acts as a corrosion inhibitor to the water side metal. The deoxidizer for hydroquinone is used in the boiler water to add hydroquinone to the boiler water during preheating and deoxygenation to remove residual dissolved oxygen.</span>
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<span style="font-size:12px;">4. It is anthraquinone dyes, azo dyes, and pharmaceutical raw materials.</span>
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<span style="font-size:12px;">5. As corrosion inhibitors, stabilizers and antioxidants for detergents, also used as hair dyes for cosmetics.</span>
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<span style="font-size:12px;">6. Photometric determination of phosphorus, magnesium, barium, copper, silicon and arsenic. The polarographic and volumetric determinations of niobium. Heteropoly acid reducing agent, copper and gold reducing agent</span>
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<span style="font-size:12px;">Package</span>
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<span style="font-size:12px;">25KGS/Bag, Paper bag packaging lined with plastic, or according to your requirement.</span>
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</p>chenyichem.com

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