The purity of electronic grade 1,1,2-trichlorotrifluoroethane by gas chromatography

Technical Report · Thu Mar 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/7108362· OSTI ID:7108362

Dubiel, S. V.

A gas chromatography (GC) method was developed to determine the purity of electronic grade 1,1,2-trichlorotrifluoroethane (TCTFE) for use in cleaning electronic components. High purity TCTFE is required to assure that the impurities would not inhibit or increase solvency characteristics. The low ppm chlorinated hydrocarbon (CHC) and chlorofluorocarbon (CFC) impurities were separated on a GC packed column containing a polydimethylsiloxane stationary phase and helium as the carrier gas. Flame ionization detected the resolved impurities as they eluted from the column. The standard addition method and computer intergration was used for quantitation. The concentration of known and unknown impurities were added together and subtracted from 100% to obtain the percent purity of TCTFE. The relative standard deviation (RSD) for ten replicate peak area determinations varied from 2 to 4% for most of the known impurities. The RSD for calculating ten replicate concentrations for two known impurities in the same sample was 2.8% for the 2.4 ppm (w/w) impurity and 1.3% for the 12.4 ppm impurity. 2 refs., 1 fig., 6 tabs.

• Research Organization: Allied-Signal Aerospace Co., Kansas City, MO (USA). Kansas City Div.
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 7108362
• Report Number(s): KCP-613-4202; ON: DE90008161
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
CHLORINATED ALIPHATIC HYDROCARBONS
CHROMATOGRAPHY
DOCUMENT TYPES
FLUORINATED ALIPHATIC HYDROCARBONS
FREONS
GAS CHROMATOGRAPHY
HALOGENATED ALIPHATIC HYDROCARBONS
IMPURITIES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PROGRESS REPORT
SEPARATION PROCESSES