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Synthesis of Methyl-4, 6-Dihydroxy-2-Oxo-1-Phenyl-5-Aryl Azo Pyridine-3-Carboxylate and Their Derivates, Part-II: New Disperse Dyes

[PDF] from jcsp.org.pkR Parveen, S PARVEEN, A Aleem… - Journal of the Chemical …, 2011 - jcsp.org.pk
... Diazonium chloride solution 2 was prepared by taking 5-nitro-o-toluidine (1.52 g, 0.01 mol)
in 5N HCl (5 ml), to this solution sodium nitrite (0.69 g, 0.01 mol) in 10 ml H20 was added
at 0-5C, excess of sodium nitrite was checked by starch iodide paper. ...
BL Direct - All 2 versions

Synthesis of a Novel Carrageenan-Based Superabsorbent Hydrogel with Temperature-, Salt-, and pH-Responsiveness Properties

[PDF] from jcsp.org.pkM Sadeghi… - Journal of the Chemical Society of …, 2011 - jcsp.org.pk
... The work presented in this paper is to report a viable method for the synthesis of reactive red
series of patent dyes that possessed novel ... wise to the metanilic acid solution in the separate
beaker with constant stirring for 1 hour till the Congo red and starch iodide papers showed ...
Related articles - All 2 versions

Oxidation of Borneol to Camphor Using Oxone and Catalytic Sodium Chloride: A Green Experiment for the Undergraduate Organic Chemistry Laboratory

PT Lang, AM Harned… - Journal of Chemical …, 2011 - ACS Publications
... the less fortunate groups. It should be noted that all reactions were monitored using
starch−iodide paper, which should have ensured the presence of active oxidizing
agent (hypochlorous acid). The variable concentration of ...
Related articles - All 2 versions

Modification and characterization of amberlite XAD-2 with calcein blue for preconcentration and determination of copper (II) from environmental samples by atomic …

[PDF] from kiche.or.krE Moniri, H Ahmad Panahi, M Karimi… - Korean Journal of …, 2011 - Springer
... It was suspended in an ice-water mixture (350 mL) and treated with 1 mol L-1 HCl
and 1 mol L-1 NaNO2 (added in small aliquits of 1 mL) until the reaction mixture
showed a permanent dark blue color with starch-iodide paper. ...
Related articles - All 4 versions

Studies on microbial activity and dyeing performance of novel acid azo dyes based on 3-(4-aminophenyl)-2-phenylquinazolin-4 (3h)-one

[PDF] from niscair.res.inN Parekh, K Maheria… - Journal of Scientific & Industrial …, 2011 - nopr.niscair.res.in
... Reaction mixture was further stirred at < 5°C for 1 h. Excess of nitrous acid (tested for using
starch iodide paper) was removed by adding required amount of sulphamic acid solution
(10%). Clear diazonium salt solution thus obtained was further used. ...
Related articles

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