"Azo dyes" Essays and Research Papers

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    22.12.2009 EN Official Journal of the European Union L 342/59 REGULATION (EC) No 1223/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 30 November 2009 on cosmetic products (recast) (Text with EEA relevance) THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EURO­ PEAN UNION‚ (5) Having regard to the Treaty establishing the European Commu­ nity‚ and in particular Article 95 thereof‚ Having regard to the proposal from the Commission‚ Having regard to the opinion of the European Economic

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    TITLE OF PRJECT WORK STUDIES ON THE PRODUCTION OF QUALITY GARMENTS LEATHER FROM CALF SKIN Project Supervisor Prof.Dipl.-Ing. Mathias Paas Faculty of Textile and Clothing Technology Hochschule Niederrhein Mönchengladbach‚ Germany. Participant Md.Saiful Islam Matriculation No-871349 Master Management of Textile Trade and Technology ACKNOWLEDGEMENT The preparation of the garments leather is very interesting and sensitive issue. I tried my best to provide valuable information to

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    What Is Eczema

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    More than half of all skin diseases are classified as eczema/dermatitis. These terms both describe inflammatory conditions of the skin associated with symptoms such as redness and swelling‚ blisters‚ weeping‚ itching and scratching. Some people are born with an inherited allergic tendency called atopy. Most eczema patients are atopic and they may also suffer from other allergic diseases such as asthma‚ hay fever‚ urticaria or rhinitis. Contact eczema/dermatitis is also common and is often caused

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    Test Biuret Test Reagents CuSO4 sol’n‚ diluted NaOH Test for Intact proteins and protein hydrlysates (at least tripeptide‚ 2 peptide bonds Result Pink to violet blue color Ninhyrin Test 1‚2‚3-indanetrione monohydrate or triketohydintene hydrate‚ ethanol Alpha- amino group (usually a general test for amino acids) Xanthoproteic Test Conc. HNO3‚ conc. NaOH For W‚F‚Y (aromatic except for H) Blue to blue-violet Oxidative decarboxylation color & deamination

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    animal screening. that Human screening for a spec­ development programs trum of activities deserves consideration‚ so time-consuming are done on compounds known to possess hu­ man activity. I η 1908 Gelmo discovered sulfanilamide while working with azo dyes. Other workers subsequently found that related sulfa compounds combined tena­ ciously with the proteins of wool and silk. This suggested the possibility that they might also react with bacterial protoplasm. A quarter of a century after Gelmo’s synthesis

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    Types of Chromophore

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    electrons jump between energy levels that are extended pi orbitals‚ created by a series of alternating single and double bonds‚ often in aromatic systems. Common examples include retinal (used in the eye to detect light)‚ various food colorings‚ fabric dyes (azo compounds)‚ pH indicators‚ lycopene‚ β-carotene‚ and anthocyanins. Various factors in a chromophore’s structure go into determining at what wavelength region in a spectrum the chromophore will absorb. Lengthening or extending a conjugated system

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    Paint

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    Compound Name CAS Number Reporting Limit Test Method Phthalates (Ortho-phthalates) Di-2-ethylhexyl phthalate (DEHP) 117-81-7 1 µg/L GC/MS (EPA 8270 or ISO/DIN equivalent)  butyl benzyl phthalate (BBP) 85-68-7 1 µg/L GC/MS (EPA 8270 or ISO/DIN equivalent)    dibutyl phthalate (DBP) 84-74-2 1 µg/L GC/MS (EPA 8270 or ISO/DIN equivalent)    diethyl phthalate (DEP) 84-66-2 1 µg/L GC/MS (EPA 8270 or ISO/DIN equivalent)    dimethyl phthalate (DMP) 131-11-3 1 µg/L GC/MS (EPA 8270 or ISO/DIN equivalent)   

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    Cashew Nut Shell Liquid

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    Cashew Tree The cashew tree is evergreen. It grows up to 12 metres high and has a spread of 25 metres. Its extensive root system allows it to tolerate a wide range of moisture levels and soil types‚ although‚ commercial production is advisable only in well-drained‚ sandy loam or red soils. Annual rainfall needs to be at least 889mm (35 inches) and not more than 3048mm (120 inches). Cashew trees are most frequently found in coastal areas. It is exported to countries like Japan and Korea and its domestic

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    Slides - Drugs ver 1

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    effective antibacterial agent‚ belongs to the class of azo dyes‚ which were the first commercially produced chemicals; they effectively dyed wool fibers (animal protein). Because they contain N functions‚ the dyes were screened in vitro for antibacterial activity; of over 10‚000 tested dyes none showed any antibiotic activity. However‚ in vivo studies with mice‚ that had been infected with a bacterial culture‚ showed that several dyes counteracted gram-positive bacterial infections. HDR-F-2013

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    Functional Groups

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    Functional Groups of Organic Compounds A functional group is a specific arrangement of atoms in the HC derivative other than carbon and hydrogen. Literally‚ the functional group determines the functions of the particular HC derivative in chemical reactions. This means that the specific properties of the HC derivative are due to its functional group. Each functional group is attached to an alkyl radical (R). An alkyl radical is one H atom less than the given alkane. The alkyl radical (R) uses

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