This method is for the determination of the carbon number distribution of petroleum waxes in the range from n-C17 through n-C44 using gas chromatography (GC). The content of normal and non-normal hydrocarbons for each carbon number is also determined. Material with a carbon number above n-C44 is determined by its difference from 100 mass % and reported as C45+.
This method is applicable to petroleum derived waxes and blends of waxes but not applicable to oxygenated waxes, such as synthetic polyethylene gloycols (for example, Carbowax), or natural products such as beeswax or carnauba. The method is also not directly applicable to waxes with oil content greater than 10% as determined by Test Method D-721.
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|Hold Times, Preservatives, Preps, Collection, Analytical & Documentation|
|Holding Time:||None specified in the method.|
|Preservatives:||None specified in the method.|
|Collection Method:||Grab sampling|
|Analyte||Formula||CAS Number||Detection Limit|
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.
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