storage of benzaldehyd

[dextro]

can someone tell me how long BA can be stored, after the bottle is opened the first time?

thx

[ApprenticeCook]

cant give you a time limit.... but...

from the MSDS documentation...
Stability -Moderately stable. Oxidises readily. Oxidises in air to benzoic acid. This process is accelerated by light.
Materials to Avoid - Strong oxidising agents, strong reducing agents, strong bases, alkaline cyanide solution and heavy metal salts.
Storage Precautions - Store in cool place and out of direct sunlight. Store in well ventilated area. Store away from sources of heat or ignition. Store away from oxidizing agents. Keep containers securely sealed and protected against physical damage.

Hope that helped.
-AC

[jackhole]

If you had some benzaldehyde that was from a reputable chemical supplier and came sealed in a dark bottle as it should have, it will be good several years after the seal is broken with proper storage. If you aren't sure, just distill it.

[hest]

As usual It will last longet than you iff the lid is tight one. After some time you will see Benzoic accid in the lid, but that dosen't matter.
Moste pure chemicals last forewer.