The OECD has published a Guideline that presents a method for unambiguous characterization of hydrocarbon solvent mixtures. Actual risks can be evaluated reliably only when the identity of the substance is known. Once that occurs, regulations and laws can be applied appropriately.
As a rule, hydrocarbon solvent mixtures consist of linear, ramified, cyclic, and aromatic hydrocarbons, with individual substances composed of 5 to 20 carbon atoms.
Some of the solvents can be described well, but others are characterized as substances of Unknown or Variable composition, Complex reaction products, or Biological materials (UVCB). The guideline is helpful for characterization of
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