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      2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTCA) CAS NO. 37971-36-1

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        2019-12-02 02:07

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      Company Profile

      Hubei Haihui Chemical Technology Co., Ltd.

      By certification [File Integrity]







      Website:http://www.haihui-phosphate.com/ http://hbhh2019.nj56112.com/

      Product details

      2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTCA)

      CAS No. 37971-36-1

      Molecular Formula: C7H11O9P

      Formula Weight: 270.13 g/mol


      Industry Uses

      PBTCA is an organic phosphine scale and corrosion inhibitor with low phosphorus content. It is superior to common organic phosphonic acids because of its excellent performance in corrosion and scale inhibition. It has a wide range of utilities with the capacity of acid & alkali & oxidant resistance. It does not hydrolyze even when the pH is above 14. It has good thermal stability and applies to the water quality with high temperature, high hardness, high pH and high concentrating ratio. It has high solubility for zinc salt and can make zinc in a dissolved state at pH 9.5. It is compatible with common water treatment agents for achieving synergy.

      PBTCA is the most widely used in the formulation of high-efficiency scale and corrosion inhibitors. It has one of best performance, and it is also an excellent stabilizer for zinc salt. It is widely used in the corrosion and scale inhibition of recirculating cooling water system and oilfield water injection system, especially for compounding with zinc salt and copolymer. It can be used in occasions requiring high temperature, high hardness, high alkali and high concentration ratio. PBTCA can also be used as chelator and metal detergent in the detergent industry.


      Quality Specification


      Pale yellow aqueous solution

      Active content (PBTC)%

      50.0 min

      Phosphoric acid (as PO43-)%

      0.2 max

      Phosphorous acid (as PO33-)%

      0.5 max

      Chloride (as Cl-)%

      10 max

      PH (1% aqueous solution)

      2.0 max

      Density (20℃) g/cm3

      1.27 min

      Fe, μg/g

      10.0 max


      PBTCA is generally compound with other water treatment agents such as zinc salt, copolymer, organic phosphorus, azoles etc. If used alone, the dosage is 5 to 15 mg / L.


      ● 200L plastic barrel (250kg)

      ● IBC (1000L)

      ● Or at customers’ requirement


      store for twelve months in cool and dry place.


      Ship within 7 days

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      Chemical Safety and Protection

      ● PBTCA is an acid liquid. Harmful if swallowed.

      ● It may cause severe skin burns and eye damage. Do not contact with skin, eyes and clothes. Wash with plenty of water immediately after contact.

      ● Avoid inhalation of steam or smoke, keep the container closed, operate at the place with air circulation, and clean thoroughly after operation.

      Quality Standard (China): HG/T 3662-2010


      CAS 37971-36-1


      1,2,4-Butanetricarboxylic acid, 2-phosphono-

      2-Phosphono-1,2,4-butanetricarboxylic acid


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