PAG 5.2 Preparation of cyclohexene – Identity / amount required Hazard information per learner or group cyclohexanol, C6H11OH Harmful by inhalation and if c. 10 cm3 cyclohexanol swallowed. Irritating to respiratory system and skin. Note: Cyclohexanol has a melting point of 26C ensure it has melted before – supplying the learners. DANGER Causes severe skin and eye 85% (w/w) phosphoric(V) damage acid (orthophosphoric acid) conc. H3PO4(aq) Wear splash-proof goggles/face shield c. 4 cm3 Wear chemical resistant gloves saturated sodium chloride Currently not classified as hazardous at this solution, NaCl(aq) sat. NaCl(aq) concentration c. 15 cm3 anhydrous calcium chloride, WARNING CaCl2(s) CaCl2(s) Causes serious eye irritation c. 2-3 g <0.06 mol dm–3 bromine Currently not classified as hazardous at this Br2(aq) Br2(aq) concentration c. a few drops
PAG 5.2 – Preparation of cyclohexene Identity / amount required per learner or group Hazard information cyclohexanol cyclohexanol, C6H11OH c. 10 cm3 Note: Cyclohexanol has a melting point of 26C – ensure it has melted before supplying the learners. Harmful by inhalation and if swallowed. Irritating to respiratory system and skin. conc. H3PO4(aq) 85% (w/w) phosphoric(V) acid (orthophosphoric acid) c. 4 cm3 DANGER Causes severe skin and eye damage Wear splash-proof goggles/face shield Wear chemical resistant gloves sat. NaCl(aq) saturated sodium chloride solution, NaCl(aq) c. 15 cm3 Currently not classified as hazardous at this concentration CaCl2(s) anhydrous calcium chloride, CaCl2(s) c. 2-3 g WARNING Causes serious eye irritation Br2(aq) <0.06 mol dm–3 bromine Br2(aq) c. a few drops Currently not classified as hazardous at this concentration
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