Document 6w5OXJJk5QB6n75G8K9V6z4ER
DEC 71971
i:1 i'
. - . . INDUSTRIES
PPG INDUSTRIES. INC. / ONE GATEWAY CENTER / PITTSBURGH, PENNSYLVANIA 15222
December 3, 1971
Dr. Kenneth D. Johnson
Manufacturing Chemists Association 1825 Connecticut Avenue, N. W. Washington, D. C. 20009
Re: Trace Impurities in Vinyl Chloride Monomer
Dear Dr. Johnson:
The information you requested in your letter dated November 19, 1971 is as follows:
1. Production process - EDC cracking
2. Raw material source - Hydrocarbon cracking
*
3. Assay
Typical 99.99%
4. Identified impurities:
a. 1,2 dichloroethane - < 5 ppm
b. Acetaldehyde
- < 1 ppm
c. Hater
-< SO ppm
d. Propylene
-< .1 ppm
e. Peroxides
-<.05 ppm
f. Propadiene
-< .1 ppm
0* 2-chloropropene-l -<.1 ppm
h. Acetylene
- < 1 Ppm
i. Hethylacetylene
- <.1 ppm
J- athyl chloride k. Bthyl chloride
- <30 ppm- < 50 ppm
1. Betene-1
- <.1 ppm
l*3-butadiene
-<10 ppm
Jphdplcetylene
- < 2 ppm
Method
Chromatograph Dinitrophenyl Hydrazine Reagen Karl Fischer Chromatograph Reduced Phenolphthalein Chromatograph Chromatograph Chromatograph Chromatograph Ctaemetograplt Chromatograph Chromatograph Chromatograph Chromatograph
.v 1
Zeb G. Bell,, Jr. r'Sc.D. > Director Environmental Control
/hab
Cc : G. J. tezarehik L. F. Sargert R. E. Hiding
UCC 000471
VINYL CHLORIDE MONOMER IMPURITIES fig?!1)
1. MANUFACTURING PROCESS:
Catalytic reaction of Acetylene with Hydrogen Chloride 2. RAW MATERIALS:
Acetylene: thermal cracking of Hydrocarbon feed stock
Hydrogen Chloride: byproduct HC1 from the chlorination of Hydrocarbon feed stock
3. VCM Purity:
Minimum
Typical Maximum
99.321
99.67% 99.801
4. Impurities in the VCM:
Analytical technique: By vapor phase chromatography, detector with
flame ionization. Ethyl-Hexyl Sebacate column. Sensitivity 1 ppm.
Impurities Detected; Substance
Minimum Concaffrtin PF>
Typical Concentration ona
f ' " '
Maximum Concentraticn prrc
Light ends (C3H6'C2H2-..) Isopentane n-Pentane Ethyl Chloride 2-Dich1oropropene and
Vinyl Bromide Isopropyl Chloride 1-cis-Chloropropene 1-1-Dlchloroethylene 1-trans-Chloropropene tert - Butyl Chloride n-Propyl Chloride Methylene Chloride -
iioxoethylcne
thylsne Chloride
1-2 ftftdiloroetiiaaa
Trichloroethylene
160 20 70 0
10 320
0 traces
15 traces traces
1 traces 100 traces traces traces traces 50 traces
450 340 400
0
40 405 traces
50 27*
2 3 57 15 1240 .
traces traces traces traces 125 traces
580 2300 2000 Traces
200 670 traces 240 170 150 130
80 50 1500
5 10 40 3 300 150
ucc 000472
VINYL CHLORIDE TANK #9016 11-29-71
Methane Ethylene & Ethane Propane Propylene Isobutane n-Butane Acetylene Butane - 1 Unid. Allene Cis-Butene-2 Unid. Butadiene Methyl Acetylene Methyl Chloride Vinyl Chloride Ethyl Chloride Unid. Acetaldehyde Vinyl Acetylene 1, l-Dichleroethylene
____NIL_______ - _ _NJ.L_____ - _ _NJL_
.NIL___________ _____NIL.
_ _ _NIL_____ ___NIL_____
_ _ -TJACE.(p. 5PPM)
---Nik_____ ____ NIL._____ __ JUL.____ ____NIL_____
___TJtACE__
------Nik_____
_____4_PPM__
--JMS!9SL --Jilk_____ ___-Nik_____' ___-Nik_____ ___JQk_____ ___JSk_____ ___-Nik_____ -- Jk-- ___-Nik_____ ___-Nik_____ ------10k_____.
Ihetrument - GC-5 (Be ckman) Flame Ionization VTA
Column - 25% ICEPAL GO 88 on Firebrick l"x25' 8
UCC 000473
VINYL CHLORIDE ANALYSIS
Ethylene Base
Ethane Ethylene Propane Propylene Isobutane Acetylene n-Butane Butane-1 Allene Butene 2 Methyl Acetylene Methyl Chloride Ethyl Chloride 2 Chloropropene Vinyl Acetylene 2 Chloropropane 1,1-Dichloroethylene Acetone 1,1-Dichloroethane 1,2 -Dichloroethane Total Impurities
NIL NIL NIL NIL __ _2_ gpm_ NIL NIL NIL lppm __4ppm__ ____13p^n_ __ llppm __ _22gpm_ NIL 12p_sm_ -JUk____ NIL ___NIL___ NIL NIL
GAS CHROMATOGRAPHIC ANALYSIS 5-67
Acetylene Base
NIL NIL NIL NIL _ _20 _pgm_ NIL _ _44|pm_ 14ppm NIL __mu___ _ _19ppm, _ NIL ___ ___35ppm_ NIL __nil___ ___NIL___
NIL 91ppm ___223 ppm
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