ASTM D6143 Iron Content of Bisphenol A (4,4’–Isopropylidenediphenol)

The ASTM D6143 test method describes the procedure to determine the iron content of bisphenol A (4,4’-isopropylidenediph enol). In this test method, iron may also increase the color of bisphenol A and can affect other properties of end-use products.... Read More

  • Average 30% Cost

  • 100% Confidentiality

  • Free, No-obligation

  • 100% Customer



    The ASTM D6143 is a standard test method for the iron content of bisphenol A (4,4’- isopropylidenediphenol). Bisphenol A (BPA) has a lower detection limit of 0.1 mg/kg and a  higher detection limit of 20 mg/kg in this test technique. BPA is also used in the process of manufacturing polycarbonate plastics and epoxy resins as a plasticizer. Specifically, it is used for packaging foods and beverages, baby bottles, thermal papers, and dental sealants.

    Test procedure:

    For ASTM D6143, bisphenol A is dissolved in methanol before being acidified with hydrochloric acid to convert any ferric iron to ferrous iron. It is necessary to dilute the sample if the iron content is higher. The ferrous iron is subsequently complexed with ferrozine to generate a red/pink chromophore that can be measured at 560 nm using visible spectrophotometry. 

    Video 01: Explanation of Bisphenol-A (BPA) and its uses

    Specimen size:

    For ASTM D6143 test procedure, 5 g of the sample – bisphenol A – is taken to the nearest 0.1 mg into a 100-mL volumetric flask.


    The ppm iron in bisphenol A is calculated as follows: 

    absorbance at 560 nm × (D) × (F) 


    D= dilution factor 

    F= absorbance factor 

    As per the ASTM D6143 test, iron in the bisphenol A is reported to the nearest 0.1 µg/g.


    The ASTM D6143 is a standard test method for the iron content of bisphenol A (4,4’- isopropylidenediphenol).


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing
          STEP 01

          You share material and testing requirements with us

          STEP 02

          You ship your sample to us or arrange for us to pick it up.

          STEP 03

          We deliver the test report to your email.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process


            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?