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Crude Oil Feedstocks

Light, medium and heavy crude matched to refinery configuration.

Commercial overview

Contract basis,
clearly defined.

Crude oil is an assay-defined feedstock rather than a refined product. RDN evaluates each grade by origin, API gravity, sulfur, acidity, contaminants, distillation yield, compatibility and delivered economics.

Reference basisGrade-specific assay
Detailed specification

Quality acceptance matrix

Values are commercial reference points—not an offer or automatic guarantee. Use the current official standard and agreed contract schedule for procurement.

ParameterReference requirementTest method / basis
API gravityGrade specific / reportedASTM D287 / D1298
Density at 15°CReportedASTM D5002 / ISO 12185
Total sulfurSweet / sour grade specificASTM D4294 / D2622
BS&WContract maximumASTM D4007 / D4377
SaltRefinery acceptance limitASTM D3230
Total acid numberReported mg KOH/gASTM D664
ViscosityReported at agreed temperaturesASTM D445
Pour pointReportedASTM D5853
Vapor pressureReported / transport limitASTM D6377
Metals — Ni / V / FeReportedASTM D5708
Hydrogen sulfideReported / safety limitASTM D5705
TBP / simulated distillationFull yield curveASTM D2892 / D5236 / D7169
Applications

Where the product is used

  • Refinery feedstock
  • Crude blending
  • Petrochemical conversion
  • Strategic inventory
Required documents

Transaction file

  • Full crude assay
  • Certificate of quality
  • Certificate of origin
  • Cargo history and compatibility data
  • Independent Q&Q and shipping documents
Primary reference

Verify the current edition

Standards are revised over time. Procurement must confirm the current edition and destination law.

ASTM petroleum standards ↗
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