"Chromatography of food dyes lab" Essays and Research Papers

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    tie dye

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    to dye 3. 1 package RIT powder dye or 1/2 bottle RIT liquid dye 4. Rubber bands‚ string‚ or 2-inch wide strips of cloth for tying Instructions: 1. Gather the shirt into accordion-like folds‚ then fold the gathered fabric in half. Band tightly with cloth strips every 2 or 3 inches.   2. Before starting to dye‚ put on rubber gloves and prepare the dye bath. Dissolve 1 package RIT powder dye or 1/2 cup RIT liquid dye in about 2 gallons very hot water. For dark or bright colors‚ prepare dye bath

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    paper chromatography

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    PAPER and COLUMN CHROMATOGRAPHY REPORT 1. 2. The unknown code is an amino acid‚ Glycine. To justify the reason is because the retention factor is the same exact number as the Glycine. The data of the unknown shows everything to be exact with the data of the Glycine 3. The mobile phase is the more polar during the capillary action of the experiment. As soon as the paper touches the mobile phase‚ the solvent rises to the amino acids. This is where you can find polarity of the amino acids.

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    Tie Dye

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    The earliest surviving examples of pre-Colombian tie-dye in Peru date from 500 to 800A.D. Their designs include small circles and lines‚ with bright colors including red‚ yellow‚ blue‚ and green.[4] Shibori includes a form of tie-dye that originated in Japan. It has been practiced there since at least the eighth century. Shibori includes a number of labor-intensive resist techniques including stitching elaborate patterns and tightly gathering the stitching before dyeing‚ forming intricate designs

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    Gas Chromatography

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    GAS CHROMATOGRAPHY EXPERIMENT The purpose of this experiment is for the student: 1) to learn the general theoretical aspects of gas chromatography as a separation method‚ 2) to learn how to operate gas chromatographs specific to COD‚ 3) to become familiar with using the gas chromatograph (GC) to qualitatively identify components of mixtures‚ 4) to be introduced to and to interpret the quantitative data available via gas chromatography‚ 5) to gain insight into how the GC technique is used

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    Gas Chromatography

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    Gas Chromatography Purpose: The purpose of the gas chromatography lab is to find out how different substances interact with the surface of a solid. Chromatography is a separation technique that depends on the relative distribution of the components of a mixture between a mobile phase and a solid stationary phase. Chromatography measures the tendency of a substance to interact with the surface of a solid or to remain in a mobile phase. When doing a chromatography lab the mobile phase has to

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    CHROMATOGRAPHY _TOPIC_ : 7.2 _RESEARCH QUESTION:_ What is chromatography? How many pigments are there in a plant? How the different pigments in a plant can be separated? _APPARATUS_ : Please refer to the handout _MATERIAL_ : Please refer to the handout _METHOD_ : Please refer to the handout _DATA COLLECTION_: Coloured band Pigment front distance (± 0.05cm) Solvent front distance (± 0.05cm) Green 11.7 13.0 Yellow 12.5 13.0 _DATA PROCESSING_: Coloured band Pigment

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    Natural Dye

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    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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    Introduction Paper chromatography is a method using a chromatography paper to identify the many mixtures of one simple color. The word chromatography comes from the Greek words‚ "chroma‚" meaning color‚ and "grafein‚" meaning to write. The process of this experiment is to place a colored dot‚ such as marker ink‚ onto the chromatography paper‚ one centimeter away from the triangular tip. Next dip your chromatography paper into the solvent‚ not allowing it to touch the colored dot. Let it sit for

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    OBJECTIVE The purpose of this experiment is to analyze mixtures of compounds prior to‚ during and after a separation scheme. This experiment also allows monitoring reactions of organic molecules‚ and determines the identity of a mixture of compounds. STRUCTURES AND PHYSICAL PROPERTIES OF REACTANTS [1] SOLVENTS | a. Hexane1Molecular Molarity: 86.18 g/molBoiling Point: 69 ºCMelting Point: -95ºCDensity: 0.659 g/mL at 25ºCWater Solubility: Insoluble in waterColor/Texture: Colorless/LiquidHazardous

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    Introduction Chromatography is a technique used to separate a mixture into its individual components. In this experiment‚ chromatography is done by using a thin layer chromatography (TLC) plate and filter paper. The word ‘chromatography’ itself means the separation of colours. However‚ nowadays‚ both coloured and colourless compound are used in chromatography by various methods. In chromatography‚ the separation process of mixture is mainly based upon the polarity and molecular weight of sample

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