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Chemistry

Chemistry. Name: Vikki Lee Class no. : 18 Class : 3A. Name: Sulfur dichloride Formula: SCl 2 Electron Diagram:(outermost shell only). S. Cl. Cl. Element analysis Element percentages for the elements in sulphur dichloride : Cl --68.86 % S --31.14%.

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Chemistry

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  1. Chemistry Name: Vikki Lee Class no. : 18 Class : 3A

  2. Name: Sulfur dichlorideFormula: SCl2Electron Diagram:(outermost shell only) S Cl Cl

  3. Element analysis • Element percentages for the elements in sulphur dichloride : • Cl--68.86 % • S --31.14% • The sulfur in sulphur dichloride formally is in the oxidation state 2.

  4. Physical Properties: • Melting point: -121.0°C • Boiling point: 59 °C • Physical state at room temperature: liquid( foul smelling ) • Colour : cherry- red • Formula weight: 102.971 • Density: 1.621g cm−3 • Solubility in water: hydrolysis • Electrical conductivity: Poor

  5. Chemical Properties: • Laboratory preparation: SCl2 is produced by the chlorination of either elemental sulfur or disulfur dichloride. The process occurs in a series of steps, some of which are: Heat is released during the process

  6. The addition of Cl2 to S2Cl2Cl3S-SCl. SCl2chlorination SCl4 • Disulfur dichloride, S2Cl2, is the most common impurity in SCl2. Separation of SCl2 from S2Cl2 is possible via distillation with PCl3to form an azeotrope of 99% purity.

  7. Reactivity towards alkali: • It adds to alkenes to give chloride-substituted thioethers. Acidic or basic? Neutral

  8. Uses: • SCl2 is used in organic synthesis. • Adds to alkenes chloride-substituted thioethers. • Illustrative applications :addition to 1.5-cyclooctadiene a bicyclicthioether and ethylene sulfur mustard.S(CH2CH2Cl)2. • The sulfur mustards (mustard gas), are a class of related cytotoxic, vesicantchemical warfare agents with the ability to form large blisters on exposed skin. Mustard gas was first used effectively in World War I

  9. SCl2 is also a precursor to several inorganic sulfur compounds. • Treatment with fluoride salts SF4whichis a corrosive species . • Reaction with ammonia affords sulfur nitrides related to S4N4. • With H2S, SCl2 reacts to give "lower" sulfanes such as S3H2.

  10. Safety considerations: • SCl2 hydrolyzes with release of HCl. Old samples contain Cl2. Potential hazard: • Corrosive • Irritant

  11. When we are handling …….. 1.Wear personal safety equipment ( such as gloves and safety glasses). 2.Do the experiment in the fume cupboard 3,Wash the affected area with plenty of water if split into eyes, onto the skin and clothes.

  12. Resources: • National Institute of Standards and technology -- http://webbook.nist.gov/cgi/cbook.cgi?ID=C10545990&Mask=8 • Wikipedia -- http://en.wikipedia.org/wiki/Sulfur_dichloride • WebElements-- http://www.webelements.com/compounds/sulfur/sulphur_dichloride.html

  13. ~The End~

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