"Dye" Essays and Research Papers

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Dye

Natural dyes Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries,bark, leaves, and wood — and other organic sources such as fungi and lichens. Archaeologists have found evidence of textile dyeing dating back to the Neolithicperiod. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years.[1] The essential process of dyeing changed little over time...

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Dye Solution

answer through your investigations: 1. Which fabric (a) cotton, a natural fiber and (b) rayon, a synthetic fiber is best dyed with mayana-alum dye combination? 2. Often, mordants are added to fix the dye onto the fabrics. These are usually inorganic oxides or salts which form colored complex with the dye. Which mordant is more suited for dyeing cotton with dye extracted from eggplant skins? 3. Which mordant is more suitable for dyeing a synthetic fiber with the synthetic extract from mangosteen...

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Food Dyes

the world and sometimes different bodies have different views on food color safety. In the United States, FD&C numbers (which indicate that the FDA has approved the colorant for use in foods, drugs and cosmetics) are given to approved synthetic food dyes that do not exist in nature, while in the European Union, E numbers are used for all additives, both synthetic and natural, that are approved in food applications. The food colors are known by E numbers that begin with a 1, such as E100 (turmeric)...

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Tie Dye

Visual Arts Topic: Textile and Design Manipulation Topic: Tie Dye Time: 4 sessions x 30 mins each General Objective To be able to use appropriate materials to create designs on fabric by various tie dyeing techniques. Specific Objectives At the end of the lesson students should be able to: ✓ 1. Define Tie Dye ✓ 2. List materials needed for tie dyeing ✓ 3. Explain Tie Dye as a resist dyeing ✓ 4. Know different techniques and explain each of...

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Chromotography of Food Dyes

The Chromatography of Food Dyes and determination Of the Dyes Present in M&M Candies Procedure To complete this lab, I first mixed the solvent solution consisting of the proper ratio of water, salt, and isopropyl alcohol in a Pyrex measuring cup. I then prepared my chromatography papers for 2 trials by drawing, with a pencil, the appropriate lines and labels. Using a toothpick, I added the color to the paper, and then repeated until the color was strong. I repeated this step several more...

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Chromatography of Food Dyes

Chromatography of Food Dye Chem 180-DL3 Abstract: The goal of this experiment was to use different dyes to determine the Rf value. Chromatography is done to determine the presence of a mixture in a substance. In this experiment different dyes were used such as McCormick food coloring, M&M’s, Kool-Aid, and the dyes that came with the lab kit. Experiment and Observation: In this experiment a 50mL beaker was filled with luke warm water and a pinch of salt water was dissolved in it...

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Garcinia Mangostana as Natural Fabric Dye

B. Sta. Elena, my teacher in Science for giving me the information I need for this project, and also for teaching me some methods that I can apply on this project. Abstract This study aimed to produce natural dye from the extract of mangosteen husks and explore the function of fixing agents (mordants). In the dyeing process. Mangosteen (Garcinia mangostana), a rare fruit known to be the "queen of tropical fruits," contains bitter yellow latex and purple juice...

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Chromatography of Food Dye

Report ROOM NO: FE E309 EXPERIMENT NO : 8 TITLE : Thin Layer Chromatography of Food Dyes Submitted by Class Partners Instructor : Lyndsay Grover : BIOL 10000 lab. : Awatif Hagelamin : Farag Soliman Date lab performed : February 3, 2011 Date of submission : February 10, 2011 FENNELL CAMPUS HAMILTON, ONTARIO 1/3 Purpose: The purpose of this experiment was to observe the reactions of food dyes with thin layer chromatography paper in order to find the components of an unknown solution...

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Drugs and Hair Dye

Drugs and Hair Dyes Note: the following case is copyrighted and may be copied and used only by current users and owners of the textbook, BUSINESS ETHICS: CONCEPTS AND CASES by Manuel Velasquez. In January 1978, the Food and Drug Administration (FDA) announced it was considering a regulation that would require hair dyes containing the chemical 4-MMPD (4-Methoxy-M-phenylenediamine sulfate) to carry the following label: Warning: Contains an ingredient that can penetrate your skin and has been determined...

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Chromotography of Food Dye

Methods: In this lab using the bag of FD&C dyes, bag of M&M’s, 2 packs of Kool-Aid , and a pack of Clover Valley store brand food coloring I am going to place a drop of each dye at the bottom of the chromatography paper. For the experiment with the rubbing alcohol I also placed a drop of each dye, but used a paper coffee filter. In order to get the dye color extracted from the M&M’s and Kool-Aid I added a little additional water. After applying all of the dyes and allowing them to dry completely I placed...

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