there is disclosed a method for protecting thermolabile goods from degradation or destruction from high temperatures by surrounding the goods with a compound having a melting point about 3 ° to about 5 ° c . lower than the thermosensitive temperature of the goods and a heat capacity sufficient to protect the goods when the temperature of the environment exceeds the temperature of the goods . a representative compound is sodium sulfate decahydrate also known as glauber &# 39 ; s salt . in a preferred embodiment , the compound prior to use is melted , absorbed in a bibulous material , and then sealed in a plastic bag . in still another preferred embodiment , the method surrounds the compound with a layer of outer insulation which is adjacent to the outside container , which is made of cardboard , paper , and / or wood .