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Soda Lime: 2 Parts Quicklime Slaked with 1 Part Caustic Soda
Soda lime is lime and caustic soda dried together into grains. Packed in a tube it absorbs carbon dioxide from a gas, and the chemist heats substances with it to drive off their nitrogen as ammonia. Thorpe's Dictionary (1912): slake 2 parts of quicklime with a strong solution of 1 part of caustic soda, dry it in an iron vessel, granulate it and keep it in well-closed bottles. Caustic soda burns skin and eyes: gloves and goggles.
The picture: our diagram.
Beginner
1 day
Instructions
1
1
Dissolve 1 part caustic soda
Dissolve 1 part caustic soda
Weigh 1 part of sodium hydroxide free from nitrates and sulphates and dissolve it in a little water to a strong solution.
Materials for this step:
Sodium Hydroxide - Lab Grade1 partsTools needed:
Distilled Water
Glass Beaker
Stirrer
Balance Scale
Chemical Splash Goggles
Rubber Gloves2
2
Slake 2 parts quicklime with it
Slake 2 parts quicklime with it
Pour the solution over 2 parts of good quicklime so the lime slakes in it. Ours: in a cast-iron pot, stirring.
Materials for this step:
Quicklime2 partsTools needed:
Cast Iron PotStirrerBalance ScaleChemical Splash GogglesRubber Gloves3
3
Dry in the iron vessel
Dry in the iron vessel
Heat the mixture in the iron vessel until dry. Ours: the cast-iron pot on a hot plate.
Tools needed:
Cast Iron Pot
Hot PlateStirrerRubber Gloves4
4
Granulate and bottle
Granulate and bottle
Granulate the dry cake and keep it in well-closed bottles. Ours: broken up in a mortar and sieved.
Tools needed:
Stone Mortar and Pestle
Sieve
Glass Bottles with StoppersChemical Splash GogglesRubber GlovesTools Required
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