Measurement of Hexane Extractable Content of Polyolefins ASTM D5227-21

Measurement of Hexane Extractable Content of Polyolefins ASTM D5227-21

The ASTM D5227-21 test method specifies an extraction/gravimetric procedure for determining the amount of hexane soluble low molecular weight material present in polyethylene, polypropylene, ethylene-propylene copolymers, and ethylene-vinyl acetate copolymers.

    Scope:

    The ASTM D5227-21 test method measures the hexane extractable content of polyolefins. This test method can be used to figure out how much hexane-soluble low molecular weight material is in polyolefins. This approach for assessing polyolefin hexane extractables was modified by the Food and Drug Administration (FDA). The ASTM D5227-21 test method is suitable for resins with a maximum extractable content of 0.20 %.

    Procedure:

    For ASTM D5227-21, film samples are extracted with hexane for 2 hours at 49.5 ± 0.5°C, dried, and weighed. The weight of the residue extract in the solvent, determined by solvent evaporation in the FDA protocol, is assumed to be identical to the amount extracted from the film sample in this analytical procedure. Then, the weight loss of the extracted film is quantified by measuring the weight loss of the extracted film, obviating the need for a complex and time-consuming evaporation process.

    Specimen size:

    For ASTM D5227-21 test procedure, 2.7 g of the film sample (4 mils or less in thickness) is used as a test specimen. 

    Data:
    The weight percent of extractable present in the original sample is calculated as follows: Hexane extractable, % = (A-B) x 100 x 0.935 / A

    where,
    A = weight of original sample film, g.
    B = weight of the film after extraction, g.
    0.935 = correlation factor to eliminate the bias between the original FDA technique and this alternate test method.

    OUR SERVICES

    Core Materials Testing Services

    Metrology

    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

          We ensure your sample pick-up in an ensured manner

        •  

          STEP 03

          We deliver test report to your inbox

          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

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