1-Aminocyclopropanecarboxylic Acid (CAS 22059-21-8): What Buyers Don't Know Until They've Had a Bad Batch

1-Aminocyclopropanecarboxylic Acid

When the Yield Dropped Without Warning

A process chemist in South Korea encountered a frustrating production issue. They’d been running a reductive amination using ♦1-Aminocyclopropanecarboxylic Acid (CAS 22059-21-8) from the same supplier for two years without problems. Then one batch gave a yield drop of almost 15%. Nothing had changed in the process.
 
After testing, they found the amine had partially oxidized in transit — probably a seal failure on the drum. The purity on the CoA was correct when the material shipped. By arrival, effective concentration had dropped.
 
The supplier offered a replacement. But the lost production time was already gone.

The Stability Issue Most Buyers Miss

Amines as a class are more sensitive to storage conditions than most buyers account for. 1-Aminocyclopropanecarboxylic Acid in particular has a shelf life that depends heavily on whether the container is truly sealed after each use.
 
Moisture causes hydrolysis. Oxygen causes oxidation and discoloration. Both lead to yield loss and unexpected byproducts. If buying in bulk and resealing containers between uses, run an assay periodically — not just trusting the original CoA.

Quality Parameters That Actually Matter

For 1-Aminocyclopropanecarboxylic Acid, the relevant purity metrics are: GC purity (for volatile amines), HPLC purity (for heavier ones), water content by Karl Fischer, and color by APHA. Don’t accept a CoA that only gives you one of these.
 
Related amines — structural isomers — are the most common impurities. Ask specifically about them. A supplier who can give you an impurity profile by name is better than one who gives you a single purity number.
1-Aminocyclopropanecarboxylic Acid

What sdlookchem Provides

Shandong Lookchemical Co., Ltd. produces 1-Aminocyclopropanecarboxylic Acid (CAS 22059-21-8) with multi-point QC testing. Every commercial batch is tested for GC or HPLC purity, water content, and appearance before release.
 
Packaging: amber glass for small quantities and HDPE drums for bulk. Inert atmosphere packing on request.
 

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