Results 21 to 30 of about 846,453 (350)

Alginic Acid-acetate [PDF]

open access: yesNature, 1946
VARIOUS attempts have been described1 to acetylate alginic acid by means of acetic anhydride or acetic acid, without or with catalysts, for example, pyridine, acids, etc. Some of the products thus obtained were probably degraded, and it appeared of interest, therefore, to find out whether the acetylation of alginic acid can be done by a relatively mild
openaire   +4 more sources

catena-Poly[[bis[aqua(1,10-phenanthroline)lead(II)]-bis(μ3-2-hydroxy-5-sulfonatobenzoato)] acetic acid monosolvate]

open access: yesActa Crystallographica Section E, 2012
In the title compound, [Pb2(C7H4O6S)2(C12H8N2)2(H2O)2]·CH3COOH, the seven-coordinate PbII atom is chelated by two N atoms of one 1,10-phenanthroline ligand, four O atoms from three 5-sulfosalicylate dianions and one water O atom.
Yuan-Zheng Cheng   +4 more
doaj   +1 more source

Two-parameter determination in vinegar by a flow injection-pervaporation system [PDF]

open access: yes, 2001
A flow-injection method (FI) for the sequential determination of ethanol and acetic acid in vinegar is reported. The determination of ethanol is based on the oxidation of the pervaporated ethanol by Cr2O7K2.
Gonzalez-Rodriguez, Jose   +2 more
core   +1 more source

r-2,c-6-Bis(2-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one acetic acid solvate

open access: yesActa Crystallographica Section E, 2010
In the title compound, C21H25NO3·C2H4O2, the piperidone ring adopts a chair conformation. The two methoxy groups are nearly coplanar with the aromatic rings to which they are attached.
G. Aridoss   +4 more
doaj   +1 more source

ChemInform Abstract: THE ALLYLIC REARRANGEMENT OF LINALYL ACETATE IN THE MEDIUM OF ACETIC ACID, PROPIONIC ACID, OR ACETIC ACID CONTAINING DIOXANE OR SULFURIC ACID [PDF]

open access: yesChemischer Informationsdienst, 1974
Abstract The mechanism of the allylic rearrangement of linalyl acetate in the medium of acetic acid, propionic acid, or acetic acid containing dioxane or sulfuric acid has been investigated. The nature of the carbonium-ion pairs generated from linalyl acetate in low-dielectric-constant solvents or in strong acids, and the behavior of the
Kunio Kogami, Ju Kumanotani
openaire   +3 more sources

Effect of Acetic Acid on Succinic Acid Production of Fungal Co-culture in Slurry Fermentation

open access: yesChemical Engineering Transactions, 2020
The effect of initial acetic acid concentration on succinic acid production from biologically pretreated birchwood chip-soybean hull mixture using co-culture of Aspergillus niger, Phanerochaete chrysosporium, and Trichoderma reesei in a slurry batch ...
Jerico Z. Alcantara, Andro H. Mondala
doaj   +1 more source

Poly(vinyl chloride) polyacrylonitrile composite membranes for the dehydration of acetic acid [PDF]

open access: yes, 1993
Composite membranes have been prepared consisting of a poly(vinyl chloride) (PVC) top layer on either a dense polyacrylonitrile (PAN) layer (bi-layer membrane) or a porous PAN support layer (normal composite membrane) and studied with respect to the ...
Koops, G.H.   +5 more
core   +3 more sources

Effects of Acetic Acid and pH on the Growth and Lipid Accumulation of the Oleaginous Yeast Trichosporon fermentans

open access: yesBioResources, 2015
Acetic acid, one major inhibitor released during the hydrolysis of lignocellulosic biomass, can be utilized by the oleaginous yeast Trichosporon fermentans without glucose repression. The effect of acetic acid on the cell growth and lipid accumulation of
Zong-jun Liu   +5 more
doaj   +1 more source

Acetic and formic acids emitted from wood samples and their effect on selected materials in museum environments [PDF]

open access: yes, 2010
The concentrations of acetic acid and formic acid vapours emitted by a number of wood samples held in sealed environments were measured to assess differences between hardwood and softwood species.
Gibson, L.T., Watt, C.M.
core   +1 more source

3β,6β-Diacetoxy-5,9α-dihydroxy-5α-cholest-7-en-11-one acetic acid 0.04-solvate

open access: yesActa Crystallographica Section E, 2013
The title compound, C31H48O7·0.04CH3COOH, is a polyoxygenated steroid obtained by selective chemical oxidation of 7-dehydrocholesteryl acetate. The asymmetric unit comprises three molecules of the steroid (Z′ = 3) and a molecule of acetic acid
Vincenzo Piccialli   +4 more
doaj   +1 more source

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