Page 185 - Praxair - Specialty Gases and Equipment Reference Guide

Hydrocarbon Processing

HRVOC and Ultra Low Sulfur Diesel Fuel and Gasoline Standards

Highly Reactive Volatile Typical Concentration Nitrogen Methane Helium Hydrogen
Organic Compounds (HRVOC) Components Range Matrix Matrix Matrix Matrix
Standards Methane 3 ppm-Balance Gas 4-60 ppm Balance – –
Ethane 3 ppm-12% 4-60 ppm – – 10 ppm-20%
Praxair provides a variety of standards Ethylene 3 ppm-12% 4-60 ppm 4-12% 3-160 ppm 10 ppm-10%
used in Highly Reactive Volatile Organic Acetylene 3-8000 ppm – – 3-160 ppm –
Compounds testing of environmental Propane 3-8000 ppm 4-60 ppm – 3-160 ppm 10 ppm-1%
conditions. The most common Propylene 3-8000 ppm – 4-3000 ppm 3-160 ppm 10 ppm-1%
products and ranges are listed below. Isobutane 3-8000 ppm 4-60 ppm – – 10-1000 ppm
Please inquire if you have special n-Butane 3-8000 ppm 4-60 ppm – – 10-1000 ppm
requirements which are not listed. trans-2-Butene 3-8000 ppm – 4-5500 ppm 3-160 ppm –
Highly Reactive Volatile Organic Com- cis-2-Butene 3-8000 ppm – 4-5500 ppm 3-160 ppm –
pound (HROC) testing of vents, flares, 1-Butene 3-8000 ppm – – 3-160 ppm 10-1000 ppm
cooling towers and fugitive emissions isoButylene 3-8000 ppm – 4-3000 ppm 3-160 ppm –
requires calibrations standards used by isoPentane 3-8000 ppm – – – –
the equipment which verifies air quality n-Pentane 3-8000 ppm 4-400 ppm – – –
and composition. In addition to the 1,3 Butadine 3-8000 ppm – 10-5500 ppm 3-160 ppm 10-1000 ppm
most common analytes of Ethylene, Hydrogen 0-Balance Gas – 1-10% – Balance
Propylene, 1,3 butadiene and butene, Nitrogen 0-Balance Gas Balance 0.5-12% – –
other products and concentration Helium 0-Balance Gas – – Balance –
ranges are available and listed. Please
inquire if you have special requirements
which are not listed.

Ultra Low Sulfur Diesel Fuel and Gasoline Standards
Recognizing the global trend to reduce Total or speciated sulfur and nitrogen available for liquid and gas phase blends.
sulfur levels in fuels to meet recom- Total Sulfur in Diesel Fuel could be ordered as Dibenzothiophene, Thiophene,
mended guidelines established by the Hydrogen Sulfide or n-Butyl Sulfide. The most common ranges are listed below
World Wide Fuel Charter, Praxair can but other ranges are also available.
provide sulfur standards customized to All liquid cylinders will contain an inert pressure pad based on the customer’s
meet your requirements. Praxair offers specifications of either Nitrogen or Helium. The pressure and the volume of the
stable high quality standards for your pressure pad will vary depending on the cylinder size required for the mixture.
fuel calibration needs. Please inquire
if you have special requirements which
are not listed. Component Dibenzothiophene Thiophene Hydrogen Sulfide n-Butyl Sulfide
Total Sulfur as 1-30 ppm 1-25 ppm 1-10 ppm 1-300 ppm
Diesel Fuel Balance Gas Balance Gas Balance Gas Balance Gas

Total Sulfur in Gasoline may be ordered as Benzothiophene, Dimethyl Sulfide,
Hydrogen Sulfide or n-Butyl Sulfide. Sulfur Standards in a gasoline matrix may
be ordered as either isoOctane or a blend of Toluene and isoOctane.
The most common ranges are listed below but other ranges are also available.
All liquid cylinders will contain an inert pressure pad based on the customer’s
specifications of either Nitrogen or Helium. The pressure and the volume of the
pressure pad will vary depending on the cylinder size required for the mixture.

Component Benzothiophene Dimethyl Sulfide Hydrogen Sulfide n-Butyl Sulfide
Total Sulfur as 1-30 ppm 1-50 ppm 1-10 ppm 1-150 ppm
Gasoline Balance Gas Balance Gas Balance Gas Balance Gas

Processing
Hydrocarbon
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