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    Introduction


    Cathay Biotech is the leading supplier of biological long-chain diacids worldwide. It provides a series of long-chain diacid products from sebacic acid to octadecanedioic acid with various categories and specifications for the customers in different fields. The production technology is not only environmentally friendly, but also provides a very consistent quality history. In 2018, Cathay’s biological long-chain diacids were rated as the individual champion product of the manufacturing industry by the Ministry of Industry and Information Technology and the China Federation of Industrial Economics.


    The recommended applications for our long-chain diacids are polyamides, hot melt adhesives, perfumes, anti-corrosion agents, lubricants, cold resistant plasticizers, powder coatings, and pharmaceuticals.


    According to a third-party laboratory test and verification of sebacic acid to pentadecanedioic acid ,unit sebacic acid of biological treatment yields to a 22% less carbon emission compared to unit sebacic acid of chemical treatment produced from castor oil.



    Characteristics
    • Green manufacture
      Biological manufacturing, environmentally friendly biotransformation process, production at ambient temperatures
    • Stable quality
      Nearly 20 years of production experience, strict production process control systems, stable and reliable product quality
    • Wide product range
      A series of products from sebacic acid to octadecanedioic acid
    • Reliable supply
      Two separate production sites ensure a steady supply
    Product list
    DC10
    +
    Decanedioic acid
    Name:
    Decanedioic acid, Sebacic acid, DC10
    Formula:
    HOOC(CH2)8COOH
    CAS No.:
    111-20-6
    EINECS No.:
    203-845-5
    Molecular Weight:
    202
    Appearance:
    White powder、Granule
    Decanedioic acid:
    ≥99.0%
    Total dibasic acids:
    ≥99.5%
    Melting point:
    131℃-135℃
    Ash:
    ≤30ppm
    Application:
    Low Ash, low color, suitable for high grade polyamide/nylon, adhesive, perfume, rust prevention, etc
    DC11
    +
    Undecanedioic Acid
    Name:
    Undecanedioic acid, DC11
    Molecular formula:
    HOOC(CH2)9COOH
    CAS No.:
    1852-04-6
    EINECS No.:
    217-440-6
    Molecular weight:
    216
    Appearance:
    White powder
    Undecanedioic acid:
    ≥97.0%
    Total dibasic acids:
    ≥99.0%
    Melting point:
    110℃-113℃
    Application:
    Polyamide resin, synthetic perfume, lubricant, hot melt adhesive, anti-rust agent, plasticizer, etc.
    DC12
    +
    Dodecanedioic acid
    Name:
    Dodecanedioic acid, Lauric acid, DDDA, DDA, DC12
    Molecular formula:
    HOOC(CH2)10COOH
    CAS No.:
    693-23-2
    EINECS No.:
    211-746-3
    Molecular weight:
    230
    Appearance:
    White powder
    Dodecanedioic acid:
    ≥98.5%
    Total dibasic acids:
    ≥99.0%
    Melting point:
    129℃-131℃
    Application:
    Polyamide/polyester resin, corrosion inhibitors for metalworking fluids, hot melt adhesive, powder coating, lubricant, perfume, etc.
    DC13
    +
    Tridecanedioic Acid
    Name:
    Tridecanedioic Acid, DC13
    Molecular formula:
    HOOC(CH2)11COOH
    CAS No.:
    505-52-2
    EINECS No.:
    208-011-4
    Molecular weight:
    244
    Appearance:
    White powder
    Tridecanedioic Acid:
    ≥98.0%
    Total dibasic acids:
    ≥99.0%
    Melting point:
    111℃-114℃
    Application:
    Polyamide resin, synthetic musk, hot melt adhesive and etc., especially suitable for synthetic musk-T and clothing hot melt adhesive
    DC14
    +
    Tetradecanedioic Acid
    Name:
    Tetradecanedioic Acid, DC14
    Molecular formula:
    HOOC(CH2)12COOH
    CAS No.:
    821-38-5
    EINECS No.:
    212-476-9
    Molecular weight:
    258
    Appearance:
    White powder/flake
    Tetradecanedioic Acid:
    ≥98.5%
    Total dibasic acids:
    ≥99.0%
    Melting point:
    125℃-128℃
    Ash:
    ≤30ppm
    Application
    High-end synthetic perfume, powder coating, polyamide resin, hot melt adhesive, high-end lubricant, plasticizer, etc.
    DC16
    +
    Hexadecanedioic acid
    Name:
    Hexadecanedioic acid, DC16
    Molecular formula:
    HOOC(CH2)14COOH
    CAS No.:
    505-54-4
    EINECS No.:
    208-013-5
    Molecular weight:
    286
    Appearance:
    White powder
    Hexadecanedioic acid:
    ≥98.0%
    Total dibasic acids:
    ≥99.0%
    Melting point:
    124℃-127℃
    Application:
    Long chain polyamide, lubricant, medicine, perfume, etc.
    DC18
    +
    Octadecandioic acid
    Name:
    Octadecandioic acid, DC18
    Molecular formula:
    HOOC(CH2)16COOH
    CAS No.:
    871-70-5
    EINECS No.:
    442-490-2
    Molecular weight:
    314
    Appearance:
    White powder
    Octadecandioic acid:
    >97.0%
    Total dibasic acids:
    98.0%-102.0%
    Melting point:
    123℃-127℃
    Application:
    Long chain polyamide, pharmaceutical intermediate, etc.
    Puremix
    +
    Puremix
    Name:
    Puremix
    Introduction:
    Puremix is a mixture of different diacids in specific propotions and formulations. It can provide excellent corrosion inhibition performance in coolants and metalworking fluids. Currently, two types products,?Puremix?and PuremixⅡ,?are available.
    Appearance:
    White powder, white/off-white flake
    Total dibasic acids:
    ≥98.0%
    Specific gravity:
    1.02g/cm3
    Application:
    Corrosion inhibition for metalworking fluids, corrosion for coolants, etc.
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