Infrared Quantitative Analysis Data. CSM-56. Determination of

Determination of Toluene in Methylcyclohexane. E. A. McCRORY and R. T. SCHEDDEL. Ihe Dow Chemical Co.. Midlmd. Mich. CSM-56 h or Y. 6.1. PI'. 13.7s...
1 downloads 0 Views 2MB Size
h

Principal Liner d , A. 11.0 7.28 6.76 6.23 5.68

IIIx

d, A.

111,

1

4.45 4.26 4.13 3.85

2

3.10

5

8

7

2 2 2

5.12 4.54

I

Refractive Indices (.5893 A.). N , = 1.544; N , = 1.550; N , = 1.604; geometric mean 1.5fi2. Molecular Refraction. 69.4 o h served; 70.4 calculated. Optic Axial Angle (5893 A,). 21' = 38" calculated from refractive indices; 42' using .Mallard's constant.

Analysis of Diphenylamine, Diphenyl Ether, and Azobenzene Mixtures

No.

Name

CSM-55

Formulo

~

I

Diphenyl amine

Cx2HIIN

Diphenyl

C,&hoO

0-100

1

~-~ _ _ _ _ _ _ 2

040

erne,

10

melts at 132' C. When the melt is cooled slowly, an unstable form crystallizes, which, upon reheating, slowly undergoes a solid-solid phase transformation to the stable form.

OPTICAL PROPERTIES

L. R. KILEY, The D o w Chemical Co., Midland, Mich.

5

FUSION PROPERTIES.Tolbutamide

Figure 2. Orthogonal and clinographic projections of tolbutamide crystals

Foriiiula Wciglits per Cell. 1. Formula Weight. 270.34. Density. 1.263 (x-ray); 1.215 (flotation).

5

3.39

Dispersion. r > u, strong. Optic Orientation. a = 1'; b = X. Common Crystal Orientation. (010) showing centered obtuse bisectrix interference figure. Optic Sign. Positive.

96.

Figure 1. Tolbutamide crystals showing supplementary twinning 180 XI

2 2

LITERATURE CITED

(1) Forist, A,, Chulski,

T.,Melabolism 5,

807-12 (19561.

C~KTRIRUTIONS of crystallographic &ita should be sent to W. C. McCrone, 500 Ihst :Srd S t , Chicago 16,Ill.

Determination of Toluene in Methylcyclohexane E. A. McCRORY a n d R. T. SCHEDDEL

CSM-56

I h e D o w Chemical Co.. Midlmd. Mich.

Vo.

Nome

1

Toluene

~Rmge Formulo %

~

CiHa

0-0.4

h

ACC".

7_ %

10.002

&0.3 ]11.52s 10.400 100 0 . 0 7 4 ~ 0.1

or

Y

6.1.

mcy

PI'.

_~0.380 Ij 100

13.7s 13.41.40

o.069M

I

0.9

~

I

zene

.

Instrument: Perkin-Elmer Model 12C. NaCi prism Somple Phose; Full strength

040

I

Instrument: Perkin-Elmer Model 12, NaCI prism Smmple Phase: Solution in carbon d i d f l d e

Cell Windows:

NoCl Absorbonce Meorumment:

Bore l i n e a -

Inverse matrix .~ GraphicalX ~

Point&

Cdculotion:

Successive mpprox.-

Compaoentlh

2.88

I

0.215

2 3

0.000 0.000

Moteriol Purity:

Inverse motrixGraphical2

Relmtire Abrorbanc=i'-An.lytical

Relotire A b * ~ , b ~ " ~ ~ c - A " ~ Matrix: i~ti~~l

"

Bore I i n e L

P o i n t L

NaCl

Absorbonce Measurement: Colruiotion:

Cell Windows:

11.52 0.108 0.953

12.92

Component/X

0.103

1

0.018

2.288

0.152

Reference compounds 9 9 +% pure

Relative obrorboncer ore given 01 the dope o f the Beer's low concentrotion curves used expressed in terms of absorbonce per IOOVo con$tituent.

Moterid Pvrity:

Successive approx.-

Motrix:

Reference compounds 9 9 + %

13.7~ 155.2 pure

The relative abrorbancer are given 01 the dope o f the Bcer'r low :oncentrotion curve used expressed In terms o f obiorbonce per 100% of :O"stil"ent.

VOL. 30, NO. 9, SEPTEMBER 1958