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Overview of D1655 vs D7566 Synthetic Kerosene Specifications and Requirements

This document outlines the specifications and requirements for the D1655 and D7566 synthetic paraffinic kerosene (SPK) blends. Key parameters include thermal stability, total acid, and allowed maximums for components such as cycloparaffin, aromatics, nitrogen, water, sulfur, metals, and halogens. The D7566 standard allows for a maximum 50% blend of SPK with conventional jet fuel and mandates the same additives as D1655. Important tables detail necessary compositions and properties for safety and performance compliance.

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Overview of D1655 vs D7566 Synthetic Kerosene Specifications and Requirements

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  1. D1655 vs. D 7566 Specification Overview Joseph Sorena 11/3/2011

  2. D7566 Structure

  3. Synthetic Paraffinic Kerosene (SPK) blend components • FT SPK Table A1.1 • Lower total acid • T90-10 Min • Thermal Stability Limit Temperature Elevated to 325 C. • Anti-Oxidant Required (17 min 24 mg/L max) • Cycloparaffin 15 Mass % Max • Aromatics 0.5 Mass % Max • Carbon & Hydrogen 99.5% Min • Nitrogen 2 ppm Max • Water 75 ppm Max • Sulfur 15 ppm Max • Metals 0.1 ppm Max • Halogens 1 ppm Max • HEFA Table A2.1 • All requirements as A1.1 plus • Fame less than 5 ppm

  4. Other considerations D7566 • 50 vol % blend max of SPK with Conventional Jet • With respect to ASTM the fuel will be distributed and handled as 1655 once blended and released. • Additives are the same approved for D1655 • Synthetic Aromatics Feedstocks outside of Scope of D7566 • Alcohol to Jet • Pyrolysis oils

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