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D4530-15 – Standard Test Method Technical Guide
🔬 Purpose and Scope of the Micro Carbon Residue Test
ASTM D4530-15 (Reapproved 2020) specifies a micro method for determining the carbon residue formed after evaporation and pyrolysis of petroleum materials. This test provides an indication of the relative coke-forming tendency and is equivalent to the Conradson Carbon Residue test (D189).
Applicable to petroleum products that partially decompose on distillation at atmospheric pressure, it is validated for carbon residue values ranging from 0.10 % to 30 % (m/m).
| 🟦 Parameter | 📏 Specification / Value |
|---|---|
| Designation | D4530 −15 (Reapproved 2020) |
| Equivalent Test | D189 (Conradson Carbon Residue) |
| Validated Residue Range | 0.10 % to 30 % (m/m) |
| Low Residue Pre-Treatment | Distill to remove 90 % (V/V) of flask charge |
| Bottoms Tested | 10 % (V/V) remaining after distillation |