PAROLE IN INGLESE ASSOCIATE CON «POLYPHOSPHORIC ACID»
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10 LIBRI IN INGLESE ASSOCIATI CON «POLYPHOSPHORIC ACID»
Scopri l'uso di
polyphosphoric acid nella seguente selezione bibliografica. Libri associati con
polyphosphoric acid e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Handbook of Detergents, Part F: Production
Commercial polyphosphoric acid ranges between 105 and 117%. The monoalkyl
to dialkyl ratio increases as the reaction temperature and the strength of the
polyphosphoric acid decrease, with the limit at pyrophosphoric acid [28].
Uri Zoller, Paul Sosis, 2008
2
Handbook of Polymer Synthesis: Part B (In Two Parts)
If polyphosphoric acid is used at 40°C, it is assumed that, in some cases, the poly
- benzimidazole is not completely cyclized [1 28]. In this respect, the conversion
of bis(o-diamines) with bisorthoesters in DMSO at 100°C is supposed to be more
...
Hans R. Kricheldorf, 1991
3
Phosphoric
Acid: Purification, Uses, Technology, and Economics
3.1 introduction Polyphosphoric acid links inorganic and organic chemistry. While
phosphoric acid is used widely as a pH buffer, polyphosphoric acid catalyzes ring
modifications in a wide range of organic reactions, many of which are carried ...
4
The Chemistry of Heterocyclic Compounds, Benzimidazoles and ...
Bis Melting naphth[2.3-d]- point Yield imidazole derivative (°C) (%) Method of
preparation Ref. R(CH2),, R (n = 1) 260-264 30 Dldicarboxylic acid/
polyphosphoric acid/ 171 acid/ 1 50—170°/7—8 hr (n = 2) 296-297 34 (n = 3) 259
-260 35 (n = 4) ...
5
The Chemistry of Heterocyclic Compounds, Acridines
Popp has suggested the use of polyphosphoric acid in place of zinc chloride in
these cyclization reactions.121 With a considerable reduction in reaction time
and a lower reaction temperature, a number of the 9-substituted acridines have
been ...
6
The Chemistry of Indoles
(231) 2-Me None Ethyl pyruvate Polyphosphoric acid 45 (101) 2-Nitro None Ethyl
pyruvate Polyphosphoric acid 13, 66 (188, 230) 2,4-diCI None Ethyl pyruvate
Polyphosphoric acid 50 (101) 2-Nitro-4-methyl None Ethyl pyruvate ...
7
Decontamination of Fresh and Minimally Processed Produce
The bactericidal effect of washing treatments increased significantly for the
combinations of enterocin AS-48 and carvacrol (0.3%), cinnamic acid (0.3%),
hydrocinnamic acid (0.5%), polyphosphoric acid (at 0.1 and 0.5%), peracetic acid
(40 ...
Vicente M. Gomez-Lopez, 2012
8
The Chemistry of Heterocyclic Compounds, Chromenes, ...
Separation of the isomers depended on partition between diethyl ether and
aqueous sodium hydroxide)” E. Reaction of Phenols with Unsaturated
Compounds in the Presence of Polyphosphoric Acid 4-Chromanones have been
prepared in a ...
9
Fuel Cell Science and Engineering: Materials, Processes, ...
of temperature T. Considering the laws of mass action according to Eq. (12.3), the
equilibrium concentrations of each polyphosphoric acid species i are connected
to the equilibrium constants Ki and the initial concentration of P2O5. Hence the ...
Detlef Stolten, Bernd Emonts, 2012
10
Phosphorus: Chemistry, Biochemistry and Technology, Sixth ...
The melted acid (79.8% P205) rapidly reorganises to an equilibrium mixture of
ortho, pyro and higher members of the polyphosphoric acid series. It contains
only about 42% H4PZO7 and it is very difficult to recrystallise. Pyrophosphoric
acid ...
2 NOTIZIE DOVE SI INCLUDE IL TERMINE «POLYPHOSPHORIC ACID»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
polyphosphoric acid nel contesto delle seguenti notizie.
Asphalt conference at Missouri S&T Dec. 9-10
Conference presentations will include high polymer binder mixes, producing realistic mix specifications, polyphosphoric acid: impact on mix ... «Missouri S&T News and Research, ago 14»
Polyphosphoric Acid (Burning honey)
I like it as an acid catalyst in organic synthesis – a lot of people hate it because it's so thick and hard to handle. The stuff is absolutely gooey ... «ScienceBlogs, giu 07»
