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CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ

CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ

    • CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ
    • CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ
    • CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ
    • CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ
  • CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ

    Product Details:

    Place of Origin: CHINA
    Brand Name: JTL
    Certification: ISO9001
    Model Number: Hydrochinone

    Payment & Shipping Terms:

    Minimum Order Quantity: Negotiation
    Price: Negotiation
    Packaging Details: Drum
    Supply Ability: 1000 tons / month
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    Detailed Product Description
    Classification: Chemical Auxiliary Agent Molecular Formula: C14H21KO
    Purity: 99% Min CAS NO: 123-31-9
    Type: Pharmaceutical Intermediate / Syntheses Material Intermediate Appearance: White Powder
    Other Names: Quinol Application: Pharmaceutical Intermediate
    High Light:

    para tert butylphenol


    synthetic origin

    Quinol / Hydrochinone / HQ Organic Intermediate CAS 123-31-9


    Basic Spec

    English name: Hydroquinone
    English alias: 1,4-Benzenediol; Quinol; Hydroxyquinone; 1,4-Dihydroxybenzene

    CAS No.: 123-31-9
    EINECS number: 204-617-8
    Molecular formula: C6H6O2
    Molecular weight: 110.11


    Chemical Structure


    CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ


    Physical Specification

    Appearance and shape: off-white powder or white needle crystal
    Density: 1.332
    Melting point: 170-174 ° C
    Boiling point: 285-287 ° C
    Refractive index: 1.689
    Flash point: 165 ° C
    Water solubility: 70 g/L (20 ° C)
    Storage conditions: The warehouse is ventilated and dried at low temperature, and stored separately from oxidants and food additives.
    Color: White crystals


    Introduction About Hydroquinone


    A colorless crystalline mass with a phenolic odor. The solubility in water is 2.3% at 40 ° C and 5% at 100 ° C. Soluble in caustic soda and common organic solvents.


    Processing Method


    1. Add aniline, manganese dioxide and sulfuric acid to the reaction kettle at a molar ratio of 1:3:4. When feeding, the temperature of the chilled water in the jacket should be controlled below 10 °C. The reaction was carried out for 10 hours while stirring, and the reaction temperature was gradually raised to about 25 ° C to form phenylhydrazine. Then, steam is introduced into the reactant to carry out steam distillation, and the distilled phenylhydrazine and water vapor are partially condensed and then flow into the reduction vessel, and then iron powder having a molar ratio of 1:0.7 to phenylhydrazine is added, and the mixture is heated to 90 to 100. At °C, the reaction is carried out for 3 to 4 hours with stirring, and the product of the reduction reaction is hydroquinone. The reduced product was filtered to remove iron oxide residue, and then dehydrated and concentrated under reduced pressure. Then, sodium metabisulfite, activated carbon, and zinc powder are added, and the mixture is heated to boiling to decolorize. After hot filtration, the filtrate is slowly cooled to below 30 ° C. Hydroquinone is precipitated as needle crystals, and after centrifugal dehydration, it is added to a boiling bed and dried at 80 ° C to obtain a finished product.
    2. Phenol hydroxylation method Hydrogen peroxide is used as a hydroxylating agent, and the reaction is carried out in the presence of a catalytic amount of a strong inorganic acid or a divalent iron salt or a cobalt salt.

    Safety Instruction Of Hydroquinone


    Symbol: GHS05 GHS07 GHS08 GHS09
    Signal word: danger
    Hazard statement: H302; H317; H318; H341; H351; H410
    Packing level: III
    Hazard category: 9
    Customs code: 2907221000
    Dangerous goods transport code: 2662
    WGK Germany: 3
    Hazard class code: R22; R40; R41; R43; R50; R68
    Safety instructions: S26-S36/37/39-S61
    RTECS number: MX3500000
    Dangerous goods sign: Xn

    Application Of Hydroquinone

    • Hydroquinone, organic compound, white crystals. Mainly used in the preparation of black and white developers, anthraquinone dyes, azo dyes, rubber antioxidants, stabilizers and antioxidants. Photometric determination of phosphorus, magnesium, barium, copper, silicon and arsenic. Determination of by polarography and volumetric methods. A reducing agent for heteropolyacids, a reducing agent for copper and gold. Test phosphate, tungstate, nitrate, nitrite, selenium and tellurium. Developer.

    CAS 123-31-9 Organic Intermediate Quinol / Hydrochinone / HQ

    Packing & Storage



    Contact Information


    Tel 0086 134 35409275
    Fax 0086 757 84888673
    Mobile 0086 13670617610
    Skype frank_shuai
    WhatsApp/Viber +86-13435409275




    1. Are you a factory or tarding company?


    Our company concentrates on on the production, sales and service for plastic and coating additives, fine chemicals and intermediates.


    2. Where dose your company locate?


    We locate in Heze, Shandong province of China, also have sales rep. in Foshan


    3. Can you provide samples for quality checking before placing an order?


    Samples are avaliable upon request, but the shipping cost should be paid by customer.


    4. How to get the price list?


    Please inqire us by alibaba/email.


    5. What's your payment term?


    TT/Payoneer/Paypal/West Union


    Payment Terms

    100% TT Before Shipment



    Contact Details

    Contact Person: Mr. Frank

    Tel: 86-134-35409275

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