Quantitative extraction and concentration of synthetic water-soluble acid dyes from aqueous media using a quinine-chloroform solution

1986 ◽  
Vol 58 (14) ◽  
pp. 3048-3051 ◽  
Author(s):  
Fumiko. Kobayashi ◽  
Naoki. Ozawa ◽  
Junji. Hanai ◽  
Masakazu. Isobe ◽  
Tadashi. Watabe
Keyword(s):  
Aqueous Media ◽  
Chloroform Solution ◽  
Water Soluble ◽  
Acid Dyes ◽  
Quantitative Extraction ◽  
Soluble Acid ◽  
Synthetic Water

Use of amberlite XAD-2 for isolation and detection ofa water-soluble acid dyes

1979 ◽  
Vol 172 (1) ◽  
pp. 327-334 ◽  
Author(s):  
Takayoshi Uematsu ◽  
Toshiko Kurita ◽  
Akira Hamada
Keyword(s):  
Water Soluble ◽  
Acid Dyes ◽  
Soluble Acid

Extraction of water-soluble acid dyes by ion-pair formation with tri-n-octylamine

1980 ◽  
Vol 113 (2) ◽  
pp. 307-314 ◽  
Author(s):  
M. Puttemans ◽  
L. Dryon ◽  
D.L. Massart
Keyword(s):  
Ion Pair ◽  
Pair Formation ◽  
Water Soluble ◽  
Acid Dyes ◽  
Ion Pair Formation ◽  
Soluble Acid

Separation and detection of water-soluble acid dyes on polyamide thin layers

1972 ◽  
Vol 73 (1) ◽  
pp. 173-182 ◽  
Author(s):  
Ryuzo Takeshita ◽  
Taeko Yamashita ◽  
Nozomu Itoh
Keyword(s):  
Thin Layers ◽  
Water Soluble ◽  
Acid Dyes ◽  
Soluble Acid

scholarly journals Self-Healing Polymer-Clay Hybrids by Facile Complexation of a Waterborne Polymer with a Clay

2021 ◽  
Author(s):  
Aranee Pleng Teepakakorn ◽  
Makoto Ogawa
Keyword(s):  
Vinyl Alcohol ◽  
Aqueous Media ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Soluble Polymer ◽  
Water Soluble Polymer ◽  
Smectite Clay

Water-induced self-healing materials were prepared by the hybridization of a water-soluble polymer, poly(vinyl alcohol), with a smectite clay by mixing in an aqueous media and subsequent casting. Without using chemical...

Dissociation of imino proton(s) of a highly water-soluble metal-free phthalocyanine and determination of its pKa value in water

2013 ◽  
Vol 17 (06n07) ◽  
pp. 447-453 ◽  
Author(s):  
Hiroaki Isago ◽  
Harumi Fujita
Keyword(s):  
Aqueous Media ◽  
Thermal Reaction ◽  
Water Soluble ◽  
Acid Dissociation ◽  
Acid Dissociation Constant ◽  
Metal Free ◽  
Imino Proton ◽  
Pka Value ◽  
Triton X

Dissociation of imino proton(s) in the cavity of the macrocycle of a highly water-soluble, metal-free phthalocyanine ( H 2( H 4 tsppc ); where H 4 tsppc denotes tetrakis{(2′,6′-dimethyl-4′-sulfonic acid)phenoxy}phthalocyaninate) in ethanolic and aqueous solutions has spectrophotometrically been investigated. The spectral changes associated with reaction with NaOH have been found to involve one-proton transfer process in aqueous media while two-protons process in ethanolic media. The acid-dissociation constant of the first imino proton in water (in the presence of Triton X-100) has been determined to be 12.5 ± 0.2 (as pKa) at 25 °C. The doubly deprotonated species in EtOH has been easily converted to its corresponding cobalt(II) derivative by thermal reaction with anhydrous CoCl 2.

SYNTHESIS OF L-α-CEPHALINS CONTAINING FATTY ACIDS OF SHORTER CHAIN LENGTH: WATER-SOLUBLE GLYCEROLPHOSPHATIDES II

1960 ◽  
Vol 38 (1) ◽  
pp. 859-864
Author(s):  
Erich Baer ◽  
Tibor Gróf
Keyword(s):  
Fatty Acids ◽  
Chain Length ◽  
Chloroform Solution ◽  
Water Soluble ◽  
Simultaneous Removal ◽  
Protective Groups ◽  
Salt Structure ◽  
Catalytic Hydrogenolysis

L-α-(Dihexanoyl)cephalin has been synthesized by the phosphorylation of D-α,β-dihexanoylglycerol with phenylphosphoryl dichloride and pyridine, esterification of the reaction product, viz. dihexanoyl-L-α-glycerylphenylphosphoryl chloride, with N-carbobenzoxyethanolamine, and simultaneous removal of the protective groups of dihexanoyl-L-α-glycerylphenylphosphoryl-N-carbobenzoxyethanolamine by catalytic hydrogenolysis. The L-α-(dihexanoyl)cephalin is soluble in water.Infrared evidence supports the inner-salt structure of cephalins in chloroform solution.

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