If USP reference standard storage condition is not specified, then at what temperature it should be stored?
Is it mentioned in USP?
If yes, then please give me reference.
Thanks in advance
As far as USP standards are concerned the storage conditions are always mentioned very rarely it happens that the conditions are not specified. In these cases the storage of these impurities or standards can be applied as per internal SOP’s of your company. Also it can be maintained based on your prior experience with the working molecule.
1 Like
Storage conditions are intended to preserve the integrity of the material for the duration of its use as a USP RS.
The storage condition for an unopened USP RS can typically be found on the container label. Storage
conditions are not provided in the Safety Data Sheets (SDSs). Instead, the SDS refers users to the USP RS
label. Storage conditions are lot–specific and may change from one lot to another. If no specific directions or
limitations are provided on the USP RS label, the conditions of storage shall include storage at room
temperature and protection from moisture, light, freezing, and excessive heat. Refer to General Chapter <659>
Any unused portions remaining after the container has been opened should be carefully stored in accordance
with prudent laboratory procedures. Many variables are outside of the control of USP. Therefore, USP makes
no warranties concerning the continued suitability of previously opened USP RS’s. Decisions concerning the
proper use of previously opened USP RS’s are the responsibility of the user
Packaging and Storage Requirements in the USP-NF online publication for available definitions of storage and
handling terms