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Preservation with benzoic acid and sorbic acid

Preservation with benzoic acid and sorbic acid

LC5.4.1.2

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Description

Next to the preservative ascorbic acid, benzoic acid and sorbic acid are also counted as preservatives. In this experiment, the students will identify the preservative effect of these two substances and work out the chemical background of their antimicrobial effect.

Components of equipment sets

1	30945 4	Universal pencil
3	6659541 8	Dropper bulb
3	6659531 4	Dropping pipette 150 mm x 7 mm Ø
1	6045682 4	Powder spatula, steel, 185 mm
1	667057 4	Test tube rack metal, 20 mm Ø
2	6640421 4	Test tube Fiolax 16 mm x 160 mm
2	664183 4	Petri dish, 100 x 20 mm, glass
2	667253 4	Rubber stopper solid, 14...18 mm Ø
1	610010 8	Laboratory safety goggles
1	6708300 4	Benzoic acid, 50 g Warning H302 H319
1	6749100 4	Sorbic acid, 25 g Warning H315 H319 H335

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Preservation with benzoic acid and sorbic acid

Description

Components of equipment sets

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