Analysis of Styrene-Acrylonitrile Copolymers CS-50
R. T. SCHEDDEL, The D o w Chemical Co., Midland, Mich.
Analysis of Diphenylamine, Diphenyl Ether, and Azobenzene Mixtures CS-52
1. R. KILEY, The D o w Chemical Co., Midland, Mich. Slit
No.
1
Nome
1
Styrene (polymerized)
I
Xorv 6.1. Pfs.
Accuracy
%
Formulo 1 ICsHs)n
1
,
___-___
cj;
(mm) 3 A or 3V -
Concn. wlml lengfh
Componenf
mm
~~~
.-
Colculofion:
Diphenyl ether
CI~HIOO
0-40
f0.3 11.52~ 0.400 100 0 . 0 7 4 ~ 0.1
i CI~HION~ 0-40
f0.3 12.92~ 0.600 100 0.1 0.106g
Azobenzene
0.000
Cell Windows: NaCl Absorbonce Meosuremenf: Colculotion:
4.4 0 000 1.543
Analysis of Aniline and 4,4'-Methylenedianiline Mixtures R. T. SCHEDDEL, The D o w Chemical Co., Midland, Mich.
, Ronge
%
-~I--
0-100
~
1
I
% f1.0
I
(mnd AX or
Concn. mglml lengfh
Av
mm
~
4,4'-Methdioniline
,
2.88 0.215 0.000 0.000
1 2 3
11.52 0.108 0.953 0.018
Moferiol Purify: Reference compounds 99 -k
%
zkl.0 1 4 . 5 ~ 1.400 0.245~ -___ __ C I ? H ~ ~ N 0-100 ? I z!c 1 .O 1 2 . 3 ~ 0.550 0.loop
pure.
absorbances ore given os the slope o f the Beer's law concentration curves used expressed in terms of absorbance per 100% of constituent.
Determination of Toluene in Methylcyclohexane 0 . A. McCRORY a n d R. T. SCHEDDEL, The D o w Chemical Co., Midland, Mich.
cs-53 -
Component
~
5 1 .o
No
Nome
Formulo
5
1
Toluene
C;Hs
1.0
Ronae
1
% '-
1
x
~ccuracy
%.
0-0.4 110.002 I
-I 1 1
or u 8.1. Pfs.
Cell Windows: NoCl Absorbonce Meosuremenf:
Cell Windows: NaCl Absorbonce Measurement:
Colculofion:
Inverted matrix-G r o p hica I - X
Successive opprox.---
Relative Absorboncesa -Anolyficol Mafrix: ComponenflX 13.4
1
2 Moferiol Purify:
0.946 0.086
14.5 0.602 0.098
Colculotion:
12.3 0.107 0 . SO3
Reference compounds 98 +70pure.
Base l i n e - X
Inverse matrixG r a p hica I -X
(An)
I
AX or Av
~
% ~
~
_
lengfh
mm
_ 13.7~ 0.380 100 13.4- 10.069~ 0.9 14.0
Insfrumenf: Perkin-Elmer M o d e l 1 2C, NoCl prism Somple Phose: Full strength
Point-J-
Concn.
Slif
~
Insfrumenf: Perkin-Elmer M o d e l 12, NoCl prism Sample Phose: Solution in carbon disulfide Base line--
12.92 0.103 0.152 2.288
(' Relative
13.4~ 0.700 5 0.123~ 1 .o
lo-loo
-
Point-X
Successive approx.---
cs-5 1 Slit
X or v BI Pfs.
Base l i n e - X
Inverse matrixGraphical-X
ComponentlX
a Relative absorbances a r e given as the slope o f the Beer's l a w concentration curves used expressed in terms of absorbance per 100% o f constituent.
Accurocy
2.88M 2.63.0
Relative Absorbonceso-Anolyfical Mafrix:
9
Maferial purify: Reference copolymers o f 99 +% purity were employed. Comments: Samples a r e run and compared directly with known copolymer standords.
~
0.085 100 0 . 0 4 7 ~ 0.1
Insfrumenf: Perkin-Elmer M o d e l 12, NaCl prism Sample Phase: Solution in corbon disulfide
Point-
Successive approx.---
2
I
mm
40 10.5 4.4M 0.193 4.1- 0.034~ 0.8 4.5
6.2 0.957
C6H;N
Pfs.
0-100 51.0
1
Aniline
6.1.
%
CI~HIIN
Component/X
1
racy
%
Diphenylamine
__
Base l i n e - X
~ _ _ _~-I
Ronge
Concn. mglml lengfh
Y
Formula
~
Relofive Absorbancesa-Anolyficol Matrix:
No
X or
Name
Inverse matrixGraphical-X
Componenf Nome 1 Formula
Accu-
40 50-100 1 0 . 5 6 . 2 ~0.320 6.0- 0.038p 0.8 6.3
Insfrumenf: Baird Associates Model A, NaCI prism Somple Phase: Solution in methylene chloride Cell Windows: NaCl Absorbance Meosuremenf:
___~_
-.
Point-
Successive approx.---
Relative Absorbances"-Analyficol Matrix: ComponenflX
1 Moferiol Purify:
13.7~ 255.2
Reference compounds 99 +% pure
Relative absorbances a r e given as the slope of the Beer's l a w concentration curves used expressed in terms o f absorbance per 100%;- o f Constituent.
Relative absorbances ore given as the slope of the Beer's law con:entrotion curve used expressed in terms o f absorbance per 1OOc7, of :onstituent.
These d a t a represent s t a n d a r d publication a n d submission is oppn t o anyone i n accordance with regulations of ANALYTICALCHEimhTRY. T h e Coblentz Society is acting only a s a n aid t o tlie Journal.
T o standardize procedures, ASALYTICAL' CHEMISTRY requests t h a t material be s e n t in quintuplicate t o tlie chairman of the review committee: Robert c . Wilkerson. Celanese CorD. of America. Post Office Box 8. Clarkson. T e x .
a
VOL. 30, NO. 7, JULY 1958
1303
-
