Determinationof N-Ethylaniline in N-Ethyl-N-2-(hydroxyethyl) aniline K. B. WHETSEL, W. E. ROBERSON, and M. W. KRELL Tennessee Eastman Co., Division of Eartman Kodak Co., Kingsport, Tenn.
Determination of Butylbenzenes D. E. NICHOLSON, Humble O i l 8 Retfning Co., Baytown, lex.
Cs-145
Slit
Concn. g/100 mi Length mm
cs-144
Range
1
I N-Ethylaniline
I
1 1 CsHllN
0-10
fO.l
1
1
1
1492~ 0.36 1472- 1 . 2 ~ 1525~
I
100 10
Formulo
1
terf-Butylbenzene
CioHir
Isobutylbenzene
CioHic
0-100 f0.4
sym-Butylbenzene
CioHir
0-100
2
3
Instrumenf: Cory Model 14, fused siiico prism in series with o 600 iine/mm. echeiette grating Somple Phose: Solution in carbon tetrachloride Cell Windows: Corex Absorbonce Meosuremenf: Calculofion:
Base i i n e X
Inverse m o t r i r GraphicalX
Point-
Colculotion:
Material Purity: Commenfs:
1 2 3
29, 1006 (1957) for more details,induding
a differential method using a 10% solution o f the tertiary amine in the
reference beom.
Moteriol Purity:
Relative obsorbances ore given os the slope of the Beer’s law cancentrotion curves used expressed in terms o f absorbonce per 1 0 0 ~ oo f constituent. The calibration line posses through -0.030 absorbance o t 0 % N-ethyloniline.
1
f O 4 13 18 0 720 ’ \0:063p\ ‘l.005
Inverse m a t r i r G r a p h i c a l
Component/A
Reference compounds 99%
See ANAL. CHEM.
----
Base line-
Relufive Absorbances-Anolyfica/
1492~ 3.90
1
I
1 13.58 0.900 0.079~: 1.005
Insfrumenf: Perkin-Elmer Model 1 12, NaCl prism Somple Phase: Solution in carbon disulfide
Relotive Absorbance@-Anolyticol Motrix: ComponenflX
- - ~ _ _ _
Cell Windows: NaCI Absorbonce Measurement:
Successive approx.-
AX or
Av % Pfs. --___1 0-100 f0.4 13.09 0.720 0.063~ 1.005
Nome
-
(mm)
%
No.
-
X or v 8.1.
Accuracy
Component
P a i n t X Successive a p p r a x L
Mafrix:
13.09~
13.58~
13.18~
1.598 0.027 0.473
0.023 1.446 0.091
0.432 0.035 1.084
99.8%.
Comments: The apparent deviation from the Beer-Lambert low far ferf-butylbenrene i s an approximately 1.6% decreose in absorbance for each 0.1 00-increment in absarptivity.
Determination of Dimethylethylbenzenes
cs-146
D. E. NICHOLSON, Humble O i l B Retfning Co., Baytown, Tex.
---
Component Nome
1
1,3-Dimethyl5-ethylbenzene
Range Formulo
_
CI0H14
ACCU- A or v 8.1. racy Pts. %
AV % _ ~ 0-100 f0.6 11.84 0.700 1 0.062~ 1.005
____
1,4-Dimethyl2-ethylbenzene
C, OH,,
1.3-Dimethyl4-ethylbenzene
CioHlr
__ 0-100 f0.6 12.38 0.550 1 0.051~ 1.005
-- _ _ _ _ _ _ ~~
1,2-Dimethyl4-ethylbenzene
CloHl4
-___
1,3-Dimethyl2-ethylbenzene
CloH14
1
1,2-Dimethyl- CloHlr 3-ethylI benzene j
1 0-100 f O . 9 12.25 0.550 0.051~ 1.0C5 ___ 0-100 f0.9 12.21 0.550 1 0.051~ 1.005
I
__ 0-100 f O . 6 13.05 0.720 1 0.063~ 1.005
Instrument: Perkin-Elmer Model 112, NaCi prism Somple Phose: Solution in carbon dirulflde Cell Windows: NaCl Absorbance Measurement:
0-100 f O . 6 13.85 1.100 0.099P
I1
I 1.005
These data represent standard publication and submission is open to anyone in accordance with regulations of ANALITICALCHEMISTRY.The Coblentz Society is acting only as an aid t o the journal.
P o i n t X
Colculotioc:
Inverse m a t r i r Successive a p p r o x X G r o p h i c a l Relotive AbsorboncerAnolytical Motrix:
Componenf/A 1 2 3 4
5
6
___
Base line-
11.84~12.38~ 12.25~ 12.21~ 13.05~ 1 3 . 8 5 ~ 1.327 0.015 0.016 0.018 0.012 0.014 0.006 1.418 0.128 0.090 0.009 0.023 0.015 0.128 1.103 0.875 0.015 0.010 0.012 0.105 0.009 1.061 0.029 0.017 0.001 0.017 0.835 0.011 1.830 0.010 0.002 0.071 0.012 0.031 0.140 0.543
Materiol Purity:
99.8%.
Comments: 1,4-Dimet:~yl-4-ethylbenzene exhibits from the Beer-lambert law than the other components.
larger
deviatians
To standardiae procedure ANALYTICAL CHEMISTRY requesta that material uintuplicate to’the chairman of the review committee: D E. Nicholson. fiesearch and Development Division, Humble Oil snd Refining Co., P. 0.Box 3950, Baytown. Tex.
be sent in
VOL. 32, NO. 12, NOVEMBER 1960
1723
