BRAND: PHYWE
CODE: P3101500
Description: Principle: This experiment examins the formation of p-tolune-sulfonic acid. The sulfonation of toluene with concentrated sulfuric acid is an electrophilic aromatic substitution. This means, the sulphonation of toluene is an electrophilic substitution at the aromatic compound. The sulphonating reagents can be the free sulphur trioxide or the HSO3+ cation, which is present in the concentrated sulphuric acid in equilibrium. Unlike most other electrophilic substitutions, sulphonation is a reversible reaction. If water is present at higher temperatures, hydrolysis is mostly successful. In order to displace the equilibrium towards the desired product, the generated water must be bound or removed from the reaction mixture by way of azeotropic distillation.
Benefits: Controlled and safe heating via heating mantle and power regulator , Secure connection of the items by GL screw joint system.
Tasks: Prepare p-Toluenesulphonic acid from toluene and concentrated sulphuric acid.
What you can learn about: Electrophilic aromatic substitution, Sulphonation is a reversible reaction, Azeotropic distillation
Scope of delivery:
1 Heating mantle f. roundbottom flask, 100 ml / 49541-93 for 100 ml round glas flasks Temperature up to maximum of 450°C, 1 Support base DEMO / 02007-55, 2 Support rod, stainless steel, different lenghts | Length: 600 mm / 02037-00, 1 Retort stand, h = 750 mm / 37694-00, 3 Right angle boss-head clamp / 37697-00,3 Universal clamp / 37715-00, 1 Round bottom flask, 100ml, GL 25/12 / 35841-15, 1 Water separator GL25/12 / 35790-15, 1 Dimroth-Condensor, GL 25/12 / MAU-27223500, 1 Graduated cylinder, Borosilicate, 1000 ml | Volume: 100 ml /36629-00
1 Beaker, Boro, high-form | Volume: 150 ml / 46032-00
1 Beaker, Boro, high-form | Volume: 250 ml / 46027-00
1Buchner funnel, i.d. = 70, porcelain / 32707-00
1Round filter, different sizes | diameter: 70 mm / 32977-02
1Filter flask, 500ml, PN 34.5 / 34419-01
1Rubber gaskets,conical,set of 8 / 39265-00
1 Water jet pump, plastic/ 02728-00
1Porcelain dish 25ml, d 50mm | Top diameter: 80 mm / 32516-00
1 Funnel, glass, top dia. 50 mm | Top diameter: 50 mm / 34457-00
1 Clamp for heating mantle / 49557-01
1 Power regulator / 32288-93
1 Desiccator, vacuum, diam. 150 mm / 34126-00
1 Porcelain plate f.desiccator150mm / 32474-00
2 Rubber hose | diameter: 6 mm / 39282-00
1 Rubber hose for vacuum | diameter: 6 mm / 39286-00
2 Hose clip, diam. 8-16 mm, 1 pc./ 40996-02
1Glass rod,boro 3.3,l=300mm, d=7mm / 40485-05
1 Wash bottle, plastic, 500 ml / 33931-00
1 Spoon, special steel / 33398-00
1 Crucible tongs, 200 mm, stainless steel / 33600-00
1 Boiling beads, 200 g / 36937-20
1 Silica gel, orange, granular, 500 g / 30224-50
1 Silicon grease Molykote, 50 g / 31863-05
1 Toluene 250 ml / 30236-25
1Sulphuric acid, 95-97%, 500 ml / 30219-50
1 Sodium chloride, 500 g / 30155-50
1 Water, distilled 5 l / 31246-81
