ASTM D6047
Standard Test Methods for Rubber, Raw—Determination of 5-Ethylidenenorbornene (ENB) or Dicyclopentadiene (DCPD) in Ethylene-Propylene-Diene (EPDM) Terpolymers
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About This Item
ASTM D6047 is the standard test methods document for determining 5-Ethylidenenorbornene (ENB) or Dicyclopentadiene (DCPD) in ethylene-propylene-diene (EPDM) terpolymers. It provides a technical basis for measuring the diene component in raw rubber materials, helping users better understand composition and confirm material identity. For manufacturers, buyers, and quality teams, this standard supports more consistent testing and more reliable evaluation of EPDM terpolymer feedstocks.
Purpose of ASTM D6047
The purpose of ASTM D6047 is to establish test methods for assessing the presence or amount of ENB or DCPD in EPDM terpolymers. Because these dienes are part of the polymer structure, their determination can be important for material characterization and quality control. The standard is commonly used when a technical, repeatable method is needed to support laboratory analysis, compare material batches, or verify that raw rubber meets expected formulation targets.
Common use cases of ASTM D6047
ASTM D6047 is commonly referenced in laboratory testing of raw rubber and EPDM terpolymer materials. It may be used during incoming material inspection, production quality checks, or supplier evaluation where the ENB or DCPD content is relevant to the specification of the polymer. The standard is also useful in research, development, and technical review work where composition data helps guide material selection or confirm consistency across lots.
Why ASTM D6047 matters
This standard matters because reliable composition data can reduce uncertainty in rubber procurement and testing. ASTM D6047 helps create a shared basis for measuring key diene content in EPDM terpolymers, which supports consistency across laboratories and supply chains. When used in quality control or product evaluation, it can help identify variation early, improve documentation, and support more informed technical decisions for raw rubber materials.
- ENB or DCPD determination
- EPDM terpolymer analysis
- Raw rubber testing support
- Quality control and verification
- Laboratory and procurement use
- Publication Date: 2021-12-31
- Publisher: ASTM
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