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UOP 931-94
Trace Impurities in Mixed Xylenes by Gas Chromatography
STANDARD published on 29.7.2002
The information about the standard:
Designation standards: UOP 931-94
Note: WITHDRAWN
Publication date standards: 29.7.2002
SKU: NS-574998
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Category: Technical standards UOP
Preview of the standard UOP 931-94
| 1. Scope |
|
This method is for determining trace impurities in high-purity mixed xylenes by gas chromatography. Specific trace impurities determined include non-aromatic hydrocarbons, benzene, toluene and individual C9 and C10 aromatic compounds. C10 or higher non-aromatics, if present, may interfere with the determina-tion of benzene, but it can be determined by UOP Method 543. The range of detection for any single com-ponent is 5 to 500 mass-ppm. Impurities at concentrations above 500 mass-ppm should be determined by UOP Method 744. |
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