ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Sodium Bicarbonate from Soda Ash and Carbon Dioxide
Sodium bicarbonate, sold as baking soda, is made from sodium carbonate (soda ash): Na₂CO₃ + CO₂ + H₂O → 2 NaHCO₃. Soda ash is dissolved in water and treated with carbon dioxide, and sodium bicarbonate comes out of the solution as a solid. In 1846 John Dwight and Austin Church opened the first factory in the United States to make baking soda this way. Dry the product gently: from 80–100 °C sodium bicarbonate slowly breaks down again into sodium carbonate, water and carbon dioxide.
Intermediate
Factory process
Instructions
1
1
Dissolve the soda ash
Dissolve the soda ash
Dissolve sodium carbonate in water.
Materials for this step:
Sodium Carbonate (soda ash)1 as required
Water1 as requiredTools needed:
Precipitation Tank2
2
Treat with carbon dioxide
Treat with carbon dioxide
Pass carbon dioxide into the solution. Na₂CO₃ + CO₂ + H₂O → 2 NaHCO₃. Sodium bicarbonate precipitates as a solid.
Materials for this step:
Carbon Dioxide Gas1 as required3
3
Filter and dry
Filter and dry
Filter off the solid and dry it below 80 °C, where it starts to decompose back into sodium carbonate.
Tools needed:
Filter Press
Low-Temperature DryerMaterials
3- 1 as requiredPlaceholder
- 1 as requiredPlaceholder
- 1 as requiredPlaceholder
Tools Required
3- 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.