* To increase the luster of fabric. * Increase dye uptake. * Shrinkage control. * Increase of strength. 5. Optical Brightening (OB): * Brightening agents convert UV light into visible light. * To make the surface more whiter. * Burger whiteness increases up to 150. * Where fabric has to use as a white. INTERMEDIATE OPERATIONS * Dyeing * Printing DYEING Dye: * Colored substance. * Affinity towards the substrate
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of certain
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its dye which is yellow dye #6 and what amount of this Gatorade sample is needed to kill someone. The outcomes in this experiment were that the yellow dye #6 concentration is 5.36 x10-6 M and that the LD50 (lethal dose) is 22‚515 L / KG. Introduction In this experiment‚ we are going to use the Absorption Spectroscopies to determine the level of risk posed to the consumer by the amount of dye present in a commercial food product and how much is needed to get a LD50 of this dye. The
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Chromatography of Powdered Beverage Mix Purpose/Objective: The purpose is to be able to use liquid chromatography to separate dyes in a powdered beverage mix‚ calculate the Rf values for each dye‚ and rank the polarity of each dye present. Hypothesis: If we are to use the liquid chromatography to investigate the different dyes‚ then I think the different dyes will come up having different polarities and Rf values. Procedure/Method: Draw a line across the paper‚ 1 cm from the bottom Use
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List of Chemistry Terms used in daily life α (alpha)‚ β (beta) α- (β-‚ γ-) ray spectrometer α-addition (alpha-addition) α-cleavage (alpha-cleavage) α-decay (alpha-decay) α-effect α-elimination α-expulsion in photochemistry α-oxo carbenes α-particle (alpha-particle) ’A’ value -factorquantity ab initio quantum mechanical methods abatement in atmospheric chemistry abeo- abiological abiotic abiotic transformation absolute activation analysis absolute activity‚ quantity absolute
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cotton‚ wool‚ silk‚ and synthetic fibres; common fuels‚ such as wood‚ coal‚ petroleum‚ and natural gas; components of protective coatings‚ including varnishes‚ paints‚ lacquers‚ and enamels; antibiotics and synthetic drugs; natural and synthetic rubber; dyes; plastics; and pesticides‚ in laser technology. LASER TECHNOLOGY A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Lasers have many important applications
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Linkages between Concepts and the Indian Marketing Reality Hedonism – A Devotion to Pleasure as a Way of Life Products that completely depend on hedonism Soft-drinks‚ biscuits‚ chocolates‚ fast foods and snacks completely depend on hedonism associated with the taste-buds. “Country of origin” effects are quite useful in such categories. There is already an existing image in the minds of the consumers‚ and brands use them to further their proposition. French champagnes and Swiss Chocolates are examples
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individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further than polar substances in this process. The separation of a mixture into its components by TLC transpires because the distinctive components
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stain‚ Gram-positive bacteria stain with a _________ color due to the incorporation of the _________ dye into their cell wall. A. purple‚ safranin B. purple‚ crystal violet C. red‚ safranin D. red‚ crystal violet 4. What is the function of the mordant iodine in a Gram staining procedure? A. A mordant causes the crystal violet to run. B. A mordant fixes the bacteria to the slide. C. A mordant keeps dye attached to an object. D. All of the above 5. What is the order of reagents used in the Gram stain
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Separation Of A Dye Mixture Using Chromatography ********* AP Chemistry (3rd Block) Fauquier High School 8/ 31/ 13 ABSTRACT: The Rf values of seven known color dyes and three unknown samples were observed in order to compare results and discover the hidden identities of the three samples. Three solvents‚ H2O‚ Isopropyl alcohol‚ and a 2% NaCl solution‚ were introduced to the dotted chromatography strips to show three different ratios for each dye on account
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