The use of boric acid for determining the structure of various organic compounds. I. The dissociation constants of various acids in the presence of boric acid
✍ Scribed by J. Böeseken; J. Coops
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 304 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0165-0513
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The metastable zone width of boric acid in aqueous solutions was measured in the presence of Ca +2 , Mg +2 , Cr +3 , Fe +2 ions. For the measurements of metastable zone width, the polythermal method was used. The impurity concentration is varied from 0 to 1000 ppm in each aqueous solution. It was fo
hIICRO-I-IETDROhlETR\' OF I3i 523 Une Gtudc a ct.! cffcctudc sur les complexes form& cntrc ioclure di2 bisnlutll ct thiocnrbnnilidc. I>cs m6thotlcs tic dosage du bismuth sont propos&cs par titrngc IrdtCromdtriquc +v\\_\\_ moycn tl'iodurc dc potassium ou tic tliiocarbnnilidc. Die Zusammcnsctzung, Str
N. rvelargd) (Reccivcd January z?nd, 1970) Actn Chent. Scmd., 9 (2) (x955) 1008. 13 E. h. MATEROVA AND T. 1. ROZIIANSKAYA,%?L Neo~uvr Khim.,G (1pGr) 425.
The thin-layer chromatographic behaviour of cardenolides and their derivatives was investigated in the presence of boric acid, which forms cyclic derivatives with cis-1,2-and -1,3-diols. Boric acid reduces the mobility of cardenolide glycosides containing diol units in their carbohydrate moiety wher