ASTM D4937
Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
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About This Item
ASTM D4937 is the standard test method for p-phenylenediamine antidegradants purity by gas chromatography, offering a structured way to assess the purity of these chemical additives. This matters because purity data can support material qualification, supplier comparison, and quality control decisions. By using a recognized ASTM standard, laboratories and procurement teams can apply a consistent technical reference when evaluating p-phenylenediamine antidegradants for use in rubber and related formulations.
ASTM D4937 standard overview
The ASTM D4937 standard focuses on determining the purity of p-phenylenediamine antidegradants using gas chromatography. As a technical test method, it provides a common framework for analytical measurement and reporting, helping users apply the same approach across different samples and laboratories. This is especially useful when purity is a key purchase or acceptance criterion. ASTM D4937 supports more consistent evaluation of these antidegradant materials and helps reduce uncertainty in analytical results.
Where is ASTM D4937 used?
ASTM D4937 is commonly used in laboratory and quality control settings where p-phenylenediamine antidegradants are received, tested, or released for use. It is relevant to organizations that handle additive materials for rubber compounding, technical procurement, and supplier verification. The method may also support internal compliance checks and third-party testing workflows when gas chromatographic purity results are needed to confirm that a material meets expected specifications.
Practical importance of ASTM D4937
The practical value of ASTM D4937 lies in its role as a consistent purity test method. Using a recognized procedure can help buyers and producers compare results more reliably, support documentation for acceptance decisions, and improve confidence in product quality. It may also help reduce risk when antidegradant purity affects performance, consistency, or downstream processing. For organizations that rely on analytical testing, the standard provides a clear reference for repeatable evaluation.
- Gas chromatography-based purity determination
- Focused on p-phenylenediamine antidegradants
- Useful for lab testing and QC review
- Supports supplier and procurement checks
- Helps standardize analytical reporting
- Publication Date: 2021-12-30
- Publisher: ASTM
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