VOLUME
2 1, N O . 9, S E P T E M B E R
25 A
1949
U R E A ANILINE ALIZARIN CATECHOL THIOUREA CURCUMIN CUPFERRON RESORCINOL GALLIC
ACID
CACOTHELINE FLUORESCEIN RHODAMINE
Β
QUINALIZARIN G ALLOCYA NINE TITAN
YELLOW
BENZΙ Μ I DAZOLE CARM1NIC
ACID
DITHIOOXAMIDE METHYL
IODIDE
DIPHENYLAMINE D I P I C R Y L A M I N E D I - / 3 - N A P H T H O L D I A Z I N E
GREEN
α , α ' - D I P Y R I D Y L D I E T H Y L A N I L I N E METHYL
SULFATE
MALACHITE
GREEN
Of-BENZOIN
OXIME
SULFANILIC BRUCINE
ACID
SULFATE
SALICYLALDEHYDE SALICYLALDOXIM Ε α - F U R I L
D I O X I M E
PHENOLPHTHALE1N PHENYLHYDRAZINE tt-NAPHTHYLAMINE DIMETHYLGLYOXIME HYDRAZINE
A DROP OF REAGENT A N D A N OBSERVANT EYE
SULFATE
O-HYDROXYDIPHENYL
Fritz Feigl and his collaborators through the years have ren dered a great and lasting service for all w h o need to k n o w the composition o f the materials with which they work. They have built a neat and sensitive system of qualitative analysis that calls for only the simplest and most inexpensive equipment. Whether you are a clinician hunting for traces of pyruvic acid or a mineral ogist suspecting the presence of palladium, Dr. Feigl's book* and a gram of the reagent he recommends can unlock doors for you. Eastman's part is to supply the Feigl reagents listed o n the left in 1- and 5-gram quantities. W e consider them a very important aspect of our job, which is to serve chemists everywhere by maintaining the world's most complete stock of organic chemicals.
P-HYDROXYDIPHENYL DIACETYL
MONOXIME
8-HYDROXYQUINOLINE S-DIPHENYLCARBAZIDE SODIUM FUCHSIN
HYDROSULFITE R F
FLUORESCEIN
Ν
BASIC
CHLORIDE
1-NITROSO-2-NAPHTHOL 2-NITROSO-l-NAPHTHOL SODIUM
Ν ITRO PRUSSI DE
DIPHENYLTHIOCARBAZONE POTASSIUM
RHODIZONATE
P-NITROBENZENEAZOORCINOL SODIUM
AL1ZARINSULFONATE
2.7-DIHYDROXYNAPHTHALENE POTASSIUM
ETHYL
XANTHATE
TRIKETOHYDRINDENE
EASTMAN KODAK COMPANY
HYDRATE
BENZENESULFOHYDROXAMIC
ACID
Organic Chemical Sales Division Rochester 4 , Ν . Υ.
S-DI-P-NITROPHENYLCARBAZIDE HYDROXYLAMINE
HYDROCHLORIDE
P-NITROBENZENEAZORESORCINOL P-NITROBENZENEAZO-Or-NAPHTHOL 4-PYRIDYLPYRIDINIUM
lliiHi:
DICHLORIDE
ARE
SOME
P-DIMETHYLAMINOBENZALRHODANINE SODIUM
DlHYDROXYTARTRATE
SODIUM
/3-NAPHTHOQUINONE-4-SULFONATE
P-DIMETHYLAM1NOAZOPHENYLARSONIC P. P ' - T E T R A M E T H Y L D I A M I N O D I P H E N Y L M P-AMINODIMETHYLANILINE
KODAK
OSAZONE
OUGAJNMC
VMEEMilAM.S
ACID ETHANE
MONOHYDROCHLORIDE
1.8-DIHYDROXYNAPHTHALENE-3.6-Dl SULFONIC NAPHTHALENE-l-SULFONIC
EASTMAX
3000
*QuaIitative Analysis b y Spot Tests, 3rd edi tion, 1946, Elsevier Publishing Co., Inc., New York
ACID
AClD-(4-AZO-5)-8-HYDROXYQUINOLINE
P-NITROBENZENEAZOCHROMOTROPIC
ACID
(p-NITROBENZENEAZO-t.8-DIHYDROXYNAPHTHALENE-3.6-DlSULFONIC
ACID)
