ASTM D5508 is a standard test method used for the detection of residual acrylonitrile monomer in styrene-acrylonitrile copolymer resins and nitrile-butadiene rubber using headspace-capillary gas chromatography (HS-CGC). The residual acrylonitrile in nitrile rubbers (NBR), styrene-acrylonitrile (SAN) copolymers, and ABS resins can be measured to determine the polymers’ appropriateness for various uses. The ASTM D5508 test method (Standard Test Method for Determination of Residual Acrylonitrile Monomer in Styrene-Acrylonitrile Copolymer Resins and Nitrile-Butadiene Rubber by Headspace-Capillary Gas Chromatography (HS-CGC)) is limited to dry rubbers and resins due to the presence of 3-hydroxypropionitrile in lattices.
ASTM D5508 Residual Acrylonitrile Monomer in Styrene-Acrylonitrile Copolymer Resins & Nitrile-Butadiene Rubber
What is ASTM D5508?
Sample Preparation Guide
According to ASTM D5508, the polymer test unit (sample) that is submitted for analysis should be a 1¾ inch (45 mm) cube.
What are the Testing Procedure and Requirements for the ASTM D5508?
In the ASTM D5508 test procedure, for each polymer, two dispersions (in o-dichlorobenzene) are made and sealed in headspace vials: one includes the polymer in a solvent, and the other contains the polymer, solvent, and a known standard amount of acrylonitrile (AN). Under ambient circumstances, both vials are shaken for a set amount of time. The vials are thermally equilibrated in a constant-temperature bath after shaking.
Then, an aliquot of hot headspace gas from each vial is fed into a capillary gas chromatographic column when the timed equilibration is completed. The transfer takes place using an automated injection method. The capillary column provides the chromatographic resolution needed to separate the AN from any other volatiles present. A nitrogen-specific detector is used in ASTM D5508 testing to detect the AN response (NPD). Using a conventional addition calculation, the raw data signal is transformed into a relative RAN concentration.
Analysis Results and Interpretation
The ASTM D5508 test technique includes the detection of residual acrylonitrile monomer in styrene-acrylonitrile copolymer resins and nitrile-butadiene rubber by using headspace-capillary gas chromatography (HS-CGC). As per ASTM D5508, the residual acrylonitrile monomer is reported in parts per billion (ng/g).
FAQ
Where can I get the astm d5508 tested?
You can share your astm d5508 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d5508 test to various testing techniques.
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Please contact us for a detailed quote for your astm d5508 testing needs. Cost incurred to carry out different astm d5508 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm d5508?
The required number of samples or specimens should comply with the procedure given in the astm d5508 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
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MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm d5508 test?
The turnaround time for astm d5508 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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