Aim To familiarize oneself with some more common instances of corrosion. Reagents Hydrochloric acid 0.1 M; sulphuric acid 0.1 M; zinc and aluminium granules; copper wire; solution of copper(II) sulphate; solution of copper(II) chloride; solution of iron(II) sulphate; solution of potassium hexacyanoferrate(III); zinc-plated iron sheet; tin-plated iron sheet; iron paper clips; solid NaCl; urotropin. Equipment Test tubes, small beaker (50 cm3), centrifuge tube. Experiments 1. Making of a galvanic pair 1.1. Place a zinc granule on the bottom of the centrifuge tube and pour solution of hydrochloric acid on top. Write down the equation of reaction which occurs. Which compound is the oxidant, which is the reductant? Zn+2 HCl ZnCl 2 + H 2
seed. Also high in saturated fats. Used mostly in products such as shampoos, makeup, biofuel etc Ingridient list • Vegetable Oil, Vegetable Fat, Palm Kernel, Palm Kernel Oil, Palm Fruit Oil, Palmate, Palmitate, Palmolein, Glyceryl, Stearate, Stearic Acid, Elaeis Guineensis, Palmitic Acid, Palm Stearine, Palmitoyl Oxostearamide, Palmitoyl Tetrapeptide-3, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Sodium Kernelate, Sodium Palm Kernelate, Sodium Lauryl Lactylate/Sulphate, Hyrated Palm Glycerides, Etyl Palmitate, Octyl Palmitate, Palmityl Alcohol Impacts on health • Contains no trans fats but contains same amount of saturated fats as butter • Increases the level of cholesterol in body which can lead to heart diseases • How to avoid palm oil in your diet – avoid packaged and processed foods. Cook your own meals from natural whole foods Impacts on environment • Oil palms are grown in tropics – Asia, Africa, Latin America
Hetkel on 26 teadaolevat allergiat põhjustavat lõhna- ja säilitusainet. (Kenk 2009) Deodorandid ja parfüümid on kasutusel spreidena või aerosoolidena ja võivad sattuda sissehingamisel ka meie organismi. Seega kõik kosmeetika ei satu meie organismi naha kaudu. Pihustusvahendid sisaldavad alkoholi, mis võib kuivatada ja ärritada tundlikku nahka.(Mõtle mida tarbid) 2.2 Ohtlikud ained kosmeetikas Vahuaine SLS - (Sodium Lauryl Sulphate), ehk eesti keeles naatriumlaurüülsulfaat. SLS ärritab nahka, see imendub läbi naha ning ladestub organismi pikaks ajaks. Südant, maksa, aju, kahjustav. Võib ka tekitada kahjustusi silmadele, mitte ainult silma sattude vaid läbi organismi. (Puhas Elu 2011) Naatriumlaurüüleetersulfaat(SLES) ja ammooniumlaurüüleetersulfaat(ALES) Palju levinud sünteetilised ained, mis ei esine mitte ainult kosmeetikatoodetes, aga ka naha- ja kehahooldustoodetes
the creams are free of such substances. The questionnaire has also indicated that the awareness of respondents of the harmfulness of parabens and sulphates is high. More than half of the respondents have classified methylparaben as a harmful substance and over 40% 3 Eesti Esimene Erakosmeetikakool Kristiina Meentalo Rahvusvaheline CIDESCO-kool 52. grupp have done the same for laureth sulphate. Over one-half of the respondents have found that they know too little about harmful substances, which refers to the fact that raising awareness is very much expected and must definitely continue. 4 Eesti Esimene Erakosmeetikakool Kristiina Meentalo Rahvusvaheline CIDESCO-kool 52. grupp SISSEJUHATUS
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