THE SYMBOL OF EXCELLENCE SIIMCE 1959 TOKYO KASEI
ORGANIC REAGENTS FINE ORGANIC CHEMICALS RARE ORGANIC CHEMICALS CUSTOM S Y N T H E S I S T o k y o Kasei provides a broad assortment of chemicals t o leading Japanese chemical laboratories, institutes and companies. We currently have over 8 0 0 0 chemicals not only for laboratory use but also for industrial use as raw materials or as intermediates. T o k y o Kasei is able t o provide quantities in 5 gallon, 55 gallon or in t o n lots as desired.
TOKYO KASEI KOGYO CO., LTD. (TOKYO CHEMICAL I N D U S T R Y CO., LTD.) 15-9, TOSHIMA 6-CHOME K I T A - K U T O K Y O JAPAN TEL: 919-5131 CABLE ADDRESS: ASACHEMCO T O K Y O CIRCLE 315 ON READER SERVICE CARD
for rapid preparation of standardized
volumetric
r
solutions.
Complete range of concentrates ^ IN STOCK for immediate delivery at leading laboratory supply houses across the U.S.A. and Canada. Write for a free sample todav to:
NACHEMIA CHEMICALS INC. P. O. Box 87 Champlain, N.Y.
Distilled in
Glass
RESIDUE-FREE SOLVENTS FROM BURDICK & JACKSON Purified to the exacting requirements of gas chromatography, liquid chromatography and spectrophotometric analysis. Acetone Acetonitrile Benzene Butanol-1 Butanol-2 Butyl Chloride Butyl Formate Carbon Tetrachloride Chloroform Cyclohexane Cyclopentane o-Dichlorobenzene Dimethyl Acetamide Dimethyl Formamide Dimethyl Sulfoxide Dioxane 2-Ethoxyethanol Ethyl Acetate Ethyl Ether Heptane, 95-99° Hexadecane Hexane, 68-69° Isobutyl Alcohol Methanol 2-Methoxyethanol Methylene Chloride Methyl Ethyl Ketone Methyl Isobutyl Ketone N-Methylpyrrolidone n-Nonane Pentane Petroleum Ether, 30-60° oefa-Phenethy lamine Propanol-2 Propylene Carbonate Pyridine Tetrahydrofuran Toluene 2, 2, 4-Trimethylpentane, 99-100° o-Xylene Ask for Bulletin BJ-2E>/u.S. Agencies use F.S.S.
BURDICK & JACKSON L A B O R A T O R I E S , INC. (6i6) 726-31
CIRCLE 222 ON READER SERVICE CARD LABORATORY GUIDE
CIRCLE 399 ON READER SERVICE CARD AUGUST 1975 233 LG
