Sulfur Powder, Symbol S, Pure, 16 Oz

US $4.99

New Bedford, Massachusetts, United States
Mar 3rd

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Sulfur, chemical formula S, is used widely in industry. You can do some really cool experiments with it, e.g. from Yahoo retired chem examiner: 1] slowly and carefully melt some sulfur powder with regular shaking to mix, not letting it go above the yellow stage [ if it starts going brown and viscous you are heating too strongly]. Prepare a filter funnel with paper. When the sulfur is all a yellow liquid, pour it into the filter paper and watch carefully. It will start to set. When the crystals are about half way across, remove filter paper and QUICKLY open out, push up the middle from underneath. You'll get glistening crystals of monoclinic sulfur. 2] Prepare a large beaker of water. Then heat some sulfur in a test tube until it boils [444C]. You are going to pour the boiling sulfur directly into the water, but should be aware that it will catch alight as you pour. Pour it steadily into the cold water. You have made plastic sulfur. Remove it see how it stretches and what happens if left for a day or so 3] put some toluene in a flask and add an excess of sulfur. Warm using an electric mantle and swirl to dissolve the sulfur. The hot solution should still have residual sulfur. Leave to cool and glistening yellow sulfur crystals will form. 4] needs a fume cupboard or do outdoors. Mix equal quantities of iron fillings and powdered sulfur on an old tin lid and heat strongly from underneath. A red glow spreads through the mixture as they combine to form iron sulfide FeS. Allow to cool then warm a little with dilute hydrochloric acid. Hydrogen sulfide is formed with its smell of bad eggs. 5. using sodium sulphite. First make a solution a] add some to a little weak acidified potassium permanganate solution. b] add some to a little weak acidified potassium dichromate solution. 6. Get some iron filing, sulfur, iron + sulfur mixture and iron sulfide Try the following tests on each one and see what conclusions you can draw about elements, compounds and mixtures. a] colour b] effect of magnet c] shake with water. d] warm with dilute hydrochloric acid Also check out Youtube for some other exciting experiments you can do with sulfur and magnesium powder (sold separately here). Heat it up together with paraffin wax (also sold separately on Ebay) and you get the really stinky Hydrogen Sulfide gas. No shipping charge for additional pounds.