碳酸钾，Potassium carbonate；anhydrous, free-flowing, powder, Redi-Dri™, 99.99% trace metals basis

Potassium carbonate is a white, crystalline salt. The anhydrous form is hygroscopic, deliquescent, soluble in water, slightly soluble in methanol, but insoluble in other alcohols and acetone. Anhydrous potassium carbonate is primarily synthesized by reacting aqueous potassium hydroxide with carbon dioxide and then drying the salt at temperatures above 200 ºC to yield the anhydrous form.

 

Redi Dri^™ is an innovative packaging system that prevents absorption of environmental moisture by anhydrous & hydroscopic salts during transport and chemical storage without addition of anti-caking agents, preserving the compounds′ quality assured, free-flowing nature. Redi-Dri^™ also provides a conveniently resealable storage container as a simpler and safer-to-use alternative to one-time-use packaging such as ampules.

While the Redi-Dri^™ packaging system does offer desiccating properties, opening and closing of the Redi-Dri^™ bottle is still intended to occur under controlled atmosphere to maintain the highest quality of your MilliporeSigma product.

 

Calcium chloride in Redi-Dri offers several benefits

• Longer shelf-life as a free-flowing powder without addition of anti-caking agents
• Slower absorption of environmental moisture
• Conveniently resealable storage container in contrast to ampule
• Faster dissolution compared to clumped materials
• No need to chip, chisel, or grind clumped salts
• While the Redi-Dri^™ packaging system does offer desiccating properties, opening and closing of the Redi-Dri^™ bottle is still intended to occur under controlled atmosphere to maintain the highest quality of your MilliporeSigma product.

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC