Analysis of Isobutane, 2-Methylpropener 1-Butene, ndutane, and cis- and trans-2-Butene R. M. GUEDIN, M. C. HARVEY, and R. C. WILKERSON Celanere Corp. of Amerlca, Clarkwood, l e x .
CS-19
~
lnsfrumcnf: Perkin-Elmer Model 12-C, NaCl prism Sample Phase: Gas Component Range Name lFormula %
No.'
1
1
0-10
lsobutane
%
I
Pfs.
~
f0.5
j
Cell Windows: AgCl Absorbance Measurement:
Av
8.45 10.281 0.067
200 10
Calculofion:
Relofive AbsorbonceP-Analytical
0-10 I
Isobutylene
3
1-Butene
4
n-Butane
5
1 1
trans-2-Buteneb
C4Hs
0-10
C4HlO
50100
C4Hs
0-10
-6
cis-2-ButeneC
CaHs
0-10
Component/X
1 7y: 1 1 1 ---10.5
1
11.0
~
10.5
1
1
12.50 0.721 10.129
2 3 4
13 65 1 101 ' /0:191
5
10.30 0.438 10.086
1
10.5 14.70 1.548 /0.273
40 10
75
6
8.45~ 0.739 0.023 0.098 0.012 0.070 0.038
Point -X
Base line-
Inverted m a t r i x - X Graphical-
Successive approx.-
Matrix:
11.50~12.50~ 13.65~ 10.30~ 14.70~ 0.003 0.250 0.013 0.003 0.010 0.704 0.108 0.015 0.012 0.006 0.130 0.700 0.142 0.110 0.035 0.007 0.179 0.631 0.082 0.009 0.024 0.072 0.041 0.700 0.092 0.035 0.096 0.134 0.169 0.720
99 +%
Material Purity:
Relative absorbances are given as the slope of the Beer's low concentration curves used expressed in terms of absorbance per 100% of constituent. a
* Low.
io
High. ~
Determination of 1-Butene, cis-2-Butener trans-2-Butener Isobutylene, and lr3-Butadiene in C4 Hydrocarbons
cs-20
1. R. KILEY, The bow Chemical Co., Midland, Mich. Comaonenf
NO.
,I
1
1
I
'
Accuracy
c*c
Formulo
x or v
1
slit (mm)
C4H3
I
0-100
0-100
*1.0
1
0-100
k0.5
1
0-100
6.08
I cis-2-Butene
I
--__ I
I
,
'
*1.0
I
3
trons-2-Butene
0-100
C8s
14.81
I
1 1
1
I
I
1-10.35
~0.5
I
0.550 0.103 0.210 0.069 1.000 0.193 0.275 0.076 0.500 0.096
_____ 7.12
I
~
___ -
.
5
1,3-Butodiene
-_
cans
' ~
0-100
*0.5
0-100
51.0
0-100
=0.5
____ I l
6.25
I
i 1 I
Perkin-Elmer Model 12, NaCl prism Perkin-Elmer Model 1 12, KBr prism Sample Phose: Gor, 200-mm. pressure Cell Windows: KBr Insfrument:
Relofive Absorbancesa-Analytical Componenf/X
0.111 0.460 0.091 0.450 0.091 0.220 0.071
1
9.86 -___ I 9.70
-~
6.08 0.704 0.256 0.034 0.576 0.092
Absorbance Measuremenf: Base lineCalculation: Inverted m a t r i r GrophicalX
Concn. mm lengfh cm
AX or Av
-
1-Butene
1
2
Range
Name
I
200
5
1
5 200 5 200
1
5 200
5
I
5
1
200
,
5 200
5 200
5
P o i n t X Successive approx.__
Motrix:
6.25 7.12 0.058 0.236 0.036 0.598 0.020 0.324 0.072 0.366 1.104 0.172 Reference compounds 99+ % pure
9.70 0.222 0.174 0.096 0.024 0.958
9.86 0.464 0.126 0.188 0.023 1.360
10.35 0.317 0.450 2.032 0.041 0.324
10.95 2.406 0.040 0.152 0.832 1.940
11.24 0.622 0.038 0,022 1.782 1.464
11.43 0.224 0.042 0.014 1.054 0.968
14.81 0.035 1.904 0.003 0.002 0.002
Moterial Purity: Comments: Absorbance at 14.81 P is measured on the KBr spectrometer, and all others on the NaCl spectrometer. Relative absorbances are given as the slope of the Beer's l a w concentration curves used expressed in terms of absorbance per 100% of constituent. ~~
These data represent standard publication a n d submission is open to anyone in accordance with regulations of ANALYTICAL CHEXISTRY.The Coblentr Society is acting only as a n aid t o the Journal.
To standardize procedures AYALYTICAL CHEMISTRY requesta that material be sent in quintuplicate t o t i e ohairman of the review committee: Robert C. Wilkerson. Celanese Corm of America. Post O 5 c e Box 8. Clarkwood. Tex.
VOL. 30, NO, 1, JANUARY 1958
155
