ChemInform Abstract: SULFUR CHEMISTRY IN EQUIMOLAR SODIUM HYDROXIDE-WATER MELT. I. ELECTROCHEMICAL L OXIDATION OF SODIUM SULFIDE

1984 ◽  
Vol 15 (45) ◽  
Author(s):  
M. N. MOSCARDO-LEVELUT ◽  
V. PLICHON
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Sulfide ◽  
Sulfur Chemistry ◽  
Hydroxide Water

Anhydride und Thioanhydride von tert-Butylstibinig-und -stibonigsäuren / Anhydrides and Thioanhydrides of tert-Butylstibinous-and Stibonous Acids

1981 ◽  
Vol 36 (9) ◽  
pp. 1105-1109 ◽  
Author(s):  
Hans Joachim Breunig ◽  
Helmut Kischkel
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Sulfide ◽  
H Nmr

Abstract The reactions of di-tert-butylantimony chloride with sodium hydroxide or sodium sulfide yield new anhydrides or thioanhydrides of tert-butylstibinous acids, which have structures with bridging oxygen or sulfur atoms. Analogous reactions of tert-butylantimonydichloride produce the first examples of anhydrides or thioanhydrides of tertbutylstibonous acids, which have cyclic structures (t-BuSbE)n E = O, n = 3, 4; E = S, n = 2, 3, 4, 5. Structural evidence is based on IR, 1H NMR and MS data.

The Cellulose — Sodium Hydroxide — Water System in the Cyanoethylation of Cotton Cellulose

1956 ◽  
Vol 26 (7) ◽  
pp. 518-523 ◽  
Author(s):  
J.W. Weaver ◽  
Elias Klein ◽  
Beverly G. Webre ◽  
Elsie F. DuPré
Keyword(s):  
Sodium Hydroxide ◽  
Water System ◽  
Cotton Cellulose ◽  
Hydroxide Water

Synthesis of anthracyclinones. Part 1. Regioselective alkylation of 5-hydroxyquinizarin

1984 ◽  
Vol 62 (10) ◽  
pp. 1922-1925 ◽  
Author(s):  
Laurence M. Harwood ◽  
Leslie C. Hodgkinson ◽  
James K. Sutherland ◽  
Patrick Towers
Keyword(s):  
Sodium Hydroxide ◽  
Alkyl Derivatives ◽  
Regioselective Alkylation ◽  
Hydroxide Water

Condensation of leuco-5-hydroxyquinizarin with aldehydes under Marschalk conditions (sodium hydroxide – water) gives 2-alkyl-5-hydroxyquinizarins with high regioselectivity, while the 3-alkyl compounds are obtained under Lewis conditions (piperidinium acetate – isopropanol). Reaction of the quinone with nitronate anions in methanol yields 2-alkyl derivatives exclusively.

Improvement on Determination of the Components of Industrial Sodium Polysulfide

2013 ◽  
Vol 634-638 ◽  
pp. 87-90
Author(s):  
Zhao Long Huang ◽  
Shao Ping Feng ◽  
Du Shu Huang ◽  
Gui Yang Liu ◽  
Rui Min Xiao ◽  
...  
Keyword(s):  
Sodium Hydroxide ◽  
Analytical Method ◽  
Sodium Sulfide ◽  
Sodium Sulfite ◽  
Sodium Thiosulfate ◽  
Common Method ◽  
New Method ◽  
Sodium Polysulfide

The analytical method on sodium sulfide, sodium sulfite, sodium hydroxide and sodium thiosulfate in sodium polysulfide solution was studied in this paper. The questions in concealing sodium sulfite by formaldehyde and precipitating sodium sulfide by zine acetate, a common method reported in some papers before, was discussed. The improvement on concealing Na2SO3 by SrCl2 instead of formaldehyde and precipitating Na2S by Zn(OH)2 instead of Zn(Ac)2 and testing concentration of NaOH in the mixture, was studied. The results showed that new method is simpler, more rapid, more completely and accurate, the overwhelming reason being that it had no effect on stability of sodium polysulfide.

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