Analysis of Iso-octyl Esters of 2,4-Dichlorophenoxyacetic Acid and 2,4,5-Trichlorophenoxyacetic Acid Mixtures P. J.WITMER, D. N. THOMAS, and J. 8. VERNEITI
Acw-
1 2,4-Di-
2
0-100 *l.O
Cibl&:Clr
rhlorophenoxyacetic add I~o-octyl ester
-
Xorv
1‘7 7: k::
I
No.1
1 1 Slit (mm)
12.56 0.500 25.0 0.047~0.545
No.1
1
-
--.
---
0-100 fl.O
13.72 0.500
3
Component Name Formula 2,4-Dimethyl benzoyl chloride
0-100 f0.5 12.69~ 0.245 1 0.046~ 0.027
C&OCl
I
~CBHSOCI 0-100 f0.5 13.36~ 0.295 0.054 -
Calculation:
Inverse m
a
M
Successive a p p r o x A
i
1 2 3
Matrix:
12.56 0.268 0.020
ComponentIX
1 2
12.21~ 0.897 0.279 0.010
Compomt/X
Inverse m a t r i L
13.72 0.061 0.173
S. H. HASTINGS ond D. E. NICHOLSON Humble Oil & Rdnlng b., Boytown, Tax.
constituent.
II No./
Component Name I F
D. E. NICHOLSON, Humble O i l 8 Refining Co.. Baytown, lex.
Concn. ml length
&o
mm
1 0.027
2
-
benzene
- ____
_ I _
%
benzene
Av
29.51~ 1.089
f0.5
22.57u
1 0.100
___
__~_
0.505
1 0.100
0-100
i
0-100
i f0.5
____ 25.75~ 0.521 I
0-100
1
18.22~
--
CloHlr
A h or
fl.O
I-
1
Concn. glliter length mm
(mm)
f0.5
~
___
Instrument: Perkin-Elmer Model 1 12, CsBr prism Sample Phase: Solution in carbon tetrachloride
Instrument: Perkin-Elmer Model 21, NaCl prism Sample Phase: Sclution in carbon disulfide
Inverse matrix Graphical
~
CoHlr
1-Methyl3-ethylbenzene
0.051~ 0.027 I
Base line.---
A or Y B.1. Pis.
benzene
4 tert-Butyl-
1
%
I
Slit Accumcy
0-100
Cs-102 -
Slit
1 Range
a
Determination of Isomeric Dimethyl Methyl Benzoates
C ~ l Windows: l NaCi Absorbance Measurement:
13.36~ 0.013 0.028 0.791
Determination of C&O Alkylbenzenec
Reference compounds 99 +yo pure
1 I
12.69~ 0.034 1.044 0.020
90% minimum
Material Purify:
Relative absorbances are given as the slope of the Beer’s law concentration curves used expressed in terms of absorbance per 100% of
Cell Windows: CsBr Absorbonce Meosuremenl:
P o i n f X Successive o p p r o x a -
Calculotion:
Component/X
12.79~
1
0.254
12.99p 0.025
2
0.021
0.500
Minimum of 99%
Base line-
Inverse matrix-Graphical-
PointSuccessive a p p r o x A
Relative AbrorboncerAnalyticaI Matrix. Componentlh
Relotiva Absorbances-Analytical Matrix:
Material Purity:
Point L
Bars line-
G r a p h i c a l
Point-
Relativa Ab:orbance:”-AnalyficaI
Calculation:
-111 0.027
M t i w Absorbancar-Analytical Matrix:
NaCl Cell Window:: Abrorbance Measurement:
benzoate
12.21p 0.218 1 0.042~10.027
-
_____
Cell Window:: NaCl Absorbance Measuremcmt:
Indrumenf: Perkln-Elmer Model 1 12, NaCl prism Sample Phase: Solution in carbon disultlde
i
0-100 f0.5
C&I.OCI
2,5-Dimethyl benzoyl chloride
Pts.
Inrtrvment: Perkin-Elmer Model 21, NoCl prism Sampb Phase: SduWOn h carbon disulfide
ester
Material Purity:
mcy
I~% %
3.5-Dimethyl benzoyl chloride
24.0
Range
0.047~0.545
iaoayl
Colwbtion:
X or v B. L.
AcwConcn. mg/ml Length mm
2
2,4,5-1riCI(~ZIO:CII chlorophenoxyacetic acid
CS.103
D. E. NICHOLSON. Humblo Oil 6 Rdnlng b.,Baytown, lex.
Cs.101
Chipman Chemlcol b.,Inc., Portland, Or..
Component Noma Formula
Determination of Isomeric Methyl Benzoyl Chlorides
1 2
3 4 Material Purity:
29.51~ 0.256 0.070 0.029 0.030
22.57~
0.196 2.500 0.064 0.036
25.75~ 0.047 0.045 0.347 0.041
18.22r 0.162 0.05i 3.167 4.740
99.5% minimum
~~~
Thwe data represent standard publication and aubmisaion is open to anyone in accordance with regulations of ANALYTICAL CHEMISTRY.The Coblentz Society is acting only aa an aid to the journal.
1924
r
ANALYTICAL CHEMISTRY
To atandardise procedure ANALYTICAL CHEVISTRY requests that maceri* be sent in uintuplicate to’the chairman of the review committee: D. k’ Nicholson, qiesearch and Development Divinion, Humble Oil Refining 5. P.O.Box 3950, Baytown, Ter.
