B.
Pyramidal form,
(101) with
Cell Content. iYal~Ges~O~o; formula neights per cell = 4. Density, 4.268 grams per cc. (calculated, weight of unit of atomic weight gram); 4.26 (measured, 1.6602 X pycnometer and Berman balance); 4.16 (calculated from refractive indices). Space Group. I4,/a.
{ 100) and (110). C. Generally simple crystals; also interpenetrant-twins, and multiple twinning under certain conditions of growth. Cleavage. Absent or indistinct, irregular fracture.
X-RAYDIFFRACTION DATA
LITERATURE CITED
Cell Dimensions. a0 = 14.985 & 0.010 A,; Co = 7.382 IZ' 0.001 ,4. (wave length CuKa unresolved =
OPTICALPROPERTIES
1.5418 A.)
I
-
68 5 10 2 9 3 6 10 7 4 2 2 5 2 6 3 9
Birefringence with Berek compensator = 0,0054 =t 0.0004. Crystal length, slow (+ elongation), except where pyramidal form dominates. Uniaxial, Optic Sign (+). Color. Colorless.
w
Refractive Indices (Sodium Light). = 1.688 =t 0.001, E = 1.693 =t0.001.
Indexed Powder Pattern of NaJGegOZo, Tetragonal Form d calod. hkl d oalcd. I d meas. hkl 2,337 4 2,338 611 7.493 200 -i 2.311 2.309 123 6.623 101 541 2.231 5 2.233 5.298 220 2.138 631 2.141 3 211 4.962 2.118 4 2.115 4.137 323 301 2,078 640 3 2.080 3.746 400 '701 2,056 1 2,060 3.622 231 2.038 1 413 2,038 3.486 112 721 1.982 3 1.985 3.351 420 503,433 1.902 1 1.907 202 3.311 1 844 523 1 1.845 411 3.260 114 1.818 2 1.821 2.912 I 32 501,431 2.777 Copper radiation, A = ,5418 A . ; 440 2 649 nickel filter; intensities visually esti521 2.604 mated. 332 2,552 Powder patterns obtained from J. \Ti. 422 2.481 Edwards and Monsanto Chemical Co., 103 2,428 620 2,369 Dayton, Ohio
d meaQ. 7.50 6.58 5.29 4.97 4.14 3.75 3.63 3,486 3.351 3.314 3.261 2.912 2.774 2.648 2,603 2.550 2.485 2.426 2.374
(1) Xowotny, H., Wittmann, A., Monatsh. Chem. 84, 701 (1953). (2) Ibid., 85, 558 (1954). (3) Schwartz, R., Heinrich, F., 2. anorg. u . allgem. Chem. 205, 43 (1932). (4)Sha-w, E. R., Corwin, J. F., ANAL. CHEBI. 30, 1314 (1988). (5) Shaw, E. R., Corwin, J. F., Edwards, J. W., J. .4m. Chem. Soc. 80, 1536 (1958). RESEARCH supported in part by the United States Air Force through the .4ir Force Office of Scientific Research of the Air Research and Development Command, under Contract No. AF 18(600)1490. Additional support was received from the U. S. Army Signal Corps (Contract No. DB 36-039 SC-73211) through its Signal Corps Engineering Laboratories, Fort Monmouth, N. J. Reproduction in whole or in part is permitted for any purpose of the United States Government. CRYSTALLOGRAPHIC data for publication in this section should be sent to W. C. 1IcCrone, 501 East 32nd St., Chicago 16, Ill.
~ _ _ _ _ _ _ _ ~ ~
Determination of 2-Naphthol in 1-Naphthol
Determination of 2-Nitronaphthalene in 1-Nitronaphthalene
R. E. SEEBER and R. 0. WHITE, National Aniline Division, Allied Chemical Corp., Buffalo, N. Y
R. E. SEEBER, J, 1. ALEXANDER, and H. J. McCARTHY, National Aniline Dlvision, Allied Chemical Corp., Buffalo, N. Y.
CS-69
I
Component
naphthalene
IC
loHIOzN
I
0-5
1 *0.2
CS-70 Concn. mdml length mm
500
1 1
11.0
0.1
0.80 1400 0.5
Instrumenf: Baird Atomic, Model B, NaCl prism Sample Phase: Solution in chloroform Cell Windows: NaCl Absorbance Measurement: Calculation:
Base line-
Inverse matri-
P o i n t X Successive approx.-
GrophicalX Relotive Abrorbancea-Analytical Matrix:
Relative Absorbancea-Anolytical Matrix:
ComponentlA
11.0
Component/X
1
9.0
1
Maferial Purity:
9 9 +% EK No. 190-1 nitronaphthalene
a Relative absorbance determined b y differential method ( 7 )-that is, the reference cell contained a solution of 400 mg./ml. of 1 -nitronaphthalene in chloroform.
(1) Robinson, D.
Z., Anol.
Chem. 24, 6 1 9 (1952).
These d a t a represent standard publication a n d submission is open t o anyone in accordance with regulations of . ~ S A L Y T I C A L CHEMISTRY.T h e Coblentz Society is acting only a8 a n aid t o t h e journal.
316
ANALYTICAL CHEMISTRY
Material Purity:
98+%
11.8 6.2 EK 170, EK 171
5 Relative absorbance determined by differential method ( 1 I-that ic, the reference cell contained a solution of 500 mg./ml. of 1-naphthol in acetone.
(1) Robinson, D. Z., Anal. Chem.
24, 619 (1952).
T o standardize procedures, ANALYT:CAL CHEMISTRY requests t h a t material be sent in quintuplicate t o t h e chairman of the review-committee: Robert (,. Wilkerson. Celanese Corp. of America. Post Office Box 8. C l a r k u o o d , Tex.
