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    Home > Chemicals Industry > Chemical Technology > Product performance and production principle of 3-mercaptopropionic acid

    Product performance and production principle of 3-mercaptopropionic acid

    • Last Update: 2021-09-05
    • Source: Internet
    • Author: User
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    3-mercaptopropionic acid (3-mercaptopropionic acid), also known as mercaptolactic acid and thiopropionic acid, has a molecular formula of C 3 H 6 O 2 S, a molecular weight of 106.


    Colorless to light yellow transparent liquid; freezing point 16.


    After thiourea reacts with hydrochloric acid , it is added with acrylonitrile





    Reactor, distillation tower, liquid separator, storage tank, finished product tank


    First, 1660kg of 30% hydrochloric acid was added to the reaction kettle, 326kg of thiourea was added with stirring, and the reaction was stirred at 40°C for 0.



    1) Determination of freezing point

    Pour the liquid-based propionic acid sample into the Zhukov bottle (approximately 2/3)

    The difference between the two absolute values ​​measured should not exceed 0.

    2) Assay

    Measured by acid-base titration

    Product use

    This product is an intermediate of medicine fennarol
    It is also used as a stabilizer for polyethylene
    It can be used for transparent plastic products like thioglycolic acid , and has very good thermal stability, which is better than other stabilizers
    Also used as antioxidants, catalysts and biochemical reagents
    Also used in organic synthesis

    Security measures

    (1) Acrylonitrile as the raw material is extremely poisonous and can be absorbed through the skin.
    The maximum allowable concentration in the workplace is 45kg/m3
    Acrylonitrile splashed on clothing should be taken off immediately, splashed on the skin, rinse with plenty of water
    Thiourea is moderately toxic and corrosive to the skin
    Production equipment should be closed, and operators should wear labor protection equipment
    The workshop is well ventilated

    (2) This product is toxic
    Packed in plastic buckets or glass bottles, and stored in a cool, dry place



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