Accelerated stability testing for chemicals: Shelf life / Expiry Date
Yes, there are guidelines. For example from ICH and WHO for pharma, and from CIPAC for pesticides. Some can be downloaded freely.

Yes, there are guidelines. For example, from ICH and WHO for Pharma, and from CIPAC for pesticides. Some can be downloaded freely.
Accelerated stability tests are generally not accepted as replacements for full-scale stability tests, but can provide an indication of the formation of undesirable by-products etc.

As a rule of thumb, a very general rule, chemical reaction rates in-/decrease by a factor of 2 for every 10C the temperature changes. According to this rule, if the test temperature is raised from 20C to 30C, the test period could theoretically be halved. However, if you look through the temperature/time combinations in the guidelines, you will find this relationship hard to find :-).