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CSCAMSIA PLANT
INTEROFFICE MEMORANDUM
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To: Mr. A. K. McMillan 4
Dots:
19 February 1974
From: R. R. Spiegelhalter Re: VCM Impurities
Conoco VPC Analysis
Copies:
R. E. Jones R. W. Wolfe Dr. W. J. Zubyk M. H. Sterman
The plant chemist, Paul Fetzer, at the Conoco Lake Charles, La. VCM plant, was contacted concerning specific impurities in their monomer, levels of the impurities, and the frequency of analysis for impurities.
1. Each check tank and storage sphere prior to transferring VCM are analyzed by VPC. A statistical study showed that tank cars did not have to be analysed.
Z. The following impurities are determined by Conoco's method:
Method 1
Method Z
Methane
Methane
Ethane
Ethane
Ethylene
Ethylene
Propane
Acetylene
Propylene iso-Butane
1, 3 - Butadiene Vinyl Chloride
n~ Butane
Ethyl Chloride
Acetylene
Vinylidene Chloride
Methyl Acetylene
Chloroform
trans-Butene - 2
Carbon Tetrachloride
Butene - 1
1, 1 - Dichloroethane
\
i, 3 - Butadiene
Ethylene Dichloride
f ci - Butene - 2 Methyl Chloride
Vinyl Chloride
Ethyl Chloride
The only impurities detected and reported are 1, 3 - butadiene and
methyl chloride. Other impurities can be detected at levels of
0. 5 ppm or less.
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AP00035I22
Mr. A. K. McMillan 19 February 1974 Page -Z-
4. Conoco made a study o monomer quality last year using VPC and mass spectrometer techniques. The results have not been made available to Mr. Fetaser.
Based on our work, 1, 3 - butadiene and methyl chloride are the only impurities normally seen in Conoco monomer. Some evidence of propylene in a few sampLes was obtained 0). Conoco confirmed traces of propylene infrequently.
The quality study of VCM within APCI will be continued to confirm the Conoco quality reports. The reagents for the Conoco columns are on order and method will be evaluated as soon as possible.
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R. R. Spiegelhalter
W. Wolfe to Distribution, "Status of VPC Method for Vinyl Chloride Monomer, " Feb. 18. 1974.
AP00035123