Only mercury, gallium, and most of the alkali metals have lower melting points.
en.wikipedia.org The raw materials are prepared by different curing, acid, and alkali processes which are employed to extract the dried collagen hydrolysate.
en.wikipedia.org Impurities include alkali-metal sulfide, sulfate, trithiocarbonates, thiosulfate, sulfite, or carbonate as well as residual raw material such as alcohol and alkali hydroxide.
en.wikipedia.org It may be found in marshes, alkali flats, beaches, meadows, seeps, and vernal pools.
en.wikipedia.org Whereas isomerization is fast with lithium and sodium, it is slow with the higher alkali metals.
en.wikipedia.org