ORGANICS
. . . A M O N G SOME P 7078
p-Nitrobenzenediazonium Fluoborate (Pract.) MP 148° dec.
10 g. . .$ 1.60
25 g. . . $ 3.25
NO2C6H4N2BF4. . . M W 236.94
That "dec." would probably set in a long summer's day be low 148 C if it were an ordinary salt, like a hydrochloride. The fancy new-fangled fluoborate prop holds it together, just as the customer who asked for this item reassured us it would. It is nice to have reassuring customers. For paper chromatography, where this compound serves as a color indicator for phenols, the MP hardly mat ters. All the chromatographers want of it is the p-nitrobenzenediazonium ion to form characteristically colored red, blue, or lavender azo dyes with various methylolphenOlS
(C6HnOH(CH,OH)5-n).
To get of them. studying tion, and Ρ 2896
at other phenols, one makes such derivatives out The clever chap who thought this up was only the phenol-formaldehyde resin formation reac here, willy-nilly, it looks as though he has opened
up paper chromatography for phenol analysis. Somebody is always opening up new fields for paper chromatography, a technique of which the main fault seems to be that it is so simple it doesn't help build up a lab's budget very fast. If this doesn't bother you and if you are not too proud at this late date to read through a brief, nononsense introduction to paper chromatography, we can send you the October issue of our Organic Chemical Bulle tin, which is devoted to the subject. This will put you on the mailing list for that publication, in which our working chemists write review articles for the benefit of the archives and fellow tribesmen. If the absence of clever copywriting and fancy layout from that 28-year-old little periodical should prove in time to bore you, you can always arrange to have your free subscription cancelled.
o-Phenylphenol Sodium Salt (Pract.)
500 g. ..$ 1.80
3 kg. . .$ 7.90
C e H s C e H ^ N a . . . M W 192.19
1776
25 g. . .
8-Quinolinol Sulfate
1.25
100 g. . .
3.40
(H0C6H3N:CHCH:CH)2-H2S04. . .MW 388.39
L
J
Medicine for people we don't sell, nor medicine for animals. Medicine for orchids, yes—the two aromatic salts above. Only this past spring did we learn that we had it to sell. Letters began to drift in asking for descriptive literature on our orchid remedies. What could we answer? Of course we had no such literature, but could we deny that among our 3500-odd items there might be something to cure an ailing orchid? (People are always assuming that because we sell a chemi cal we know all about its sundry uses and have hungry salesmen panting for an opening to demonstrate them all. This is a perfectly natural assumption that happens to be false. Unlike the entrepreneur who sells the sizzle instead of the steak, we sell chemicals rather than the benefits they 5247 1099
confer. But we do love to sell the chemicals.) What we did was to track down the plant pathologist who had found these two particular compounds to be capa ble of making a fine distinction between the metabolic sys tems of orchids and those of certain bacteria and fungi that infest them. (Use in 1:2000 dilution by spray or immersion for 60 minutes or longer.) We checked with him on the identity of the compounds and then hung out our shingle as horticultural apothecaries with a limited line. If any man thinks he can make a living by putting these compounds up under his own trade-mark and backing it with more helpful service to orchid growers than ours, more power to him and we hope he lets us quote on supply ing the chemicals.
Gelatin (Purified, Pigskin).. Gelatin (Purified, Calfskin).
100 g. . .$ 4.85 100 g. . . 4.85
For photographic film and paper, we make and use a prodigious volume of gelatin; for that purpose it must be prepared even more carefully than for a journey through the alimentary canal. These are purer still, having extremely low ash. When a laboratory needs a little of this superior consommé for some fussy purpose, such as the new technique for mounting microtome sections from undecalcified,
500 g. . $22.05 500 g. . 22.05
plasticized bones to be autoradiographed {Stain Technology, 29, 225, where we are mistakenly called "Eastman Chemical Corporation"), we sell one of the above-designated Eastman Organic Chemicals. We don't bother our shy but commercially minded sister, Eastman Gelatine Corporation, of Peabody, Mass. Prices quoted are subject to change without
notice.
We single out these five organics because they're interesting, not because we're looking for a big rush on them. Also to call attention to the fact that we have some 3500 other Eastman Organic Chemicals in stock. Our List No. 39 and its recently issued supplement are yours for a note to Distillation Products Industries, Eastman Organic Chemicals Department, Rochester 3, Ν. Υ.
Eastman Organic Also...vitamins
Distillation Products Industries V O L U M E 2 7, NO. 1 1 , N O V E M B E R
1955
A
and
Chemicals
Ε in b u l k . . . d i s t i l l e d
is a division of
monoglycerides
Eastman Kodak Company 41 A
