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Working with natural dyes is exciting, and we find that we have become more adventuresome about experimenting.
NIST researchers were the first to apply time-resolved infrared spectroscopy to unambiguously reveal that electron injection from excited electronic states of the dye molecules (e.
Dye use is the percentage of dyestuff permeating the wood as a function of the percentage of total dyes in the dye solution before being applied.
Officially, there are no completely safe dyes for animals, period, as there have been no studies to show if there are any long terms effects.
Natural dyes, however, tend to be clinically safer than synthetic dyes because they do not normally produce hazardous risks and possess better biodegradable characteristics.
Names like Fakhtai, Sandali, Kafuri, Jilani, Dilbahar and Aquilquami evoke Persian and Arabian influences on the emergence of this new collection of dyes.
Use of oil soluble dyes to mark adult Eldana saccharina (Lepidoptera: Pyralidae).
In order to avoid interference with other elements in wastewater, the experiments in this study were carried out using simulated synthetic aqueous solution (SSAS) of different dyes concentrations.
The chemical is stronger in dark hair dyes than in light shades.
Before the 1980s some hair dyes contained substances called arylamines that caused tumours in animal studies.
But a 2010 analysis of past research on links between food dyes and health by the Center for Science in the Public Interest (CSPI) found compelling evidence that ingestion of artificial dyes can contribute to hyperactivity, restlessness and attention problems in some children--particularly those with ADHD.
Textile dyes used in the present study were obtained from textile dyeing industry m/s SGL Industry, Faridabad, India.