ASTM UOP1021 - 19 - Determination of Trace Methyl Mercaptan, Ethyl Mercaptan, and Isopropyl Disulfide in Polymer Grade Ethylene & Propylene by Gas Chromatography Mass Spectrometry

ASTM UOP1021 - 19

Determination of Trace Methyl Mercaptan, Ethyl Mercaptan, and Isopropyl Disulfide in Polymer Grade Ethylene & Propylene by Gas Chromatography Mass Spectrometry

Status : Current   Published : October 2019

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This method is for determining trace methyl mercaptan, ethyl mercaptan, and isopropyl disulfide in high purity polymer grade ethylene and propylene gas or liquid using a gas chromatograph equipped with a mass spectrometer run in selected ion monitoring mode. The specific instrument is preconfigured and is capable of determining typical impurities in polymer grade ethylene or propylene, however this method only outlines the procedure for determining methyl mercaptan, ethyl mercaptan, and isopropyl disulfide. Methyl and ethyl mercaptan elute on the propylene tail but are readily extracted by unique ions. The lower limit of quantitation for methyl and ethyl mercaptan are 0.04 mol-(or mass-) ppm and 0.02 mol- (or mass-) ppm for isopropyl disulfide.




Standard NumberASTM UOP1021 - 19
TitleDetermination of Trace Methyl Mercaptan, Ethyl Mercaptan, and Isopropyl Disulfide in Polymer Grade Ethylene & Propylene by Gas Chromatography Mass Spectrometry
StatusCurrent
Publication Date01 October 2019
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
ICS71.100.20
PublisherASTM
FormatA4
DeliveryYes
Pages13
File Size592 KB
Price£45.00


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