ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Sodium Sulfide: Salt Cake Reduced with Carbon
Sodium sulfide is made by heating sodium sulfate with carbon: Na2SO4 + 2 C gives Na2S and carbon dioxide, the same reduction as the first step of the Leblanc black ash, at about 1000 °C. It is the sulfide half of the kraft pulping liquor.
The picture: our diagram of the covered crucible.
Advanced
Half a day
Instructions
1
1
Mix
Mix
Grind dry salt cake with fine charcoal, about 500 g sulfate to 85 g carbon (see the notebook).
Materials for this step:
Sodium Sulfate (Salt Cake)500 g
Charcoal - Crushed Fine85 gTools needed:
Digital Kitchen Scale
Mortar and Pestle2
2
Reduce
Reduce
Pack the mix in a covered crucible and fire it in the kiln at about 1000 °C until the reaction is complete.
Tools needed:
Clay Crucible - Refractory
Kiln
Crucible Tongs
Welding Gloves
Safety Glasses3
3
Cool and store
Cool and store
Let it cool covered, break up the fused cake and keep it dry in a sealed container.
Tools needed:
Mortar and Pestle
Airtight Storage Containers4
4
Carbon for the reduction
Carbon for the reduction
Loading Jupyter Notebook...
Materials
2- Placeholder
- Placeholder
Tools Required
8- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
This blueprint makes
Related Blueprints
These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.