Natriumacetat
<a rel="nofollow" class="external text" href="https://www.youtube.com/user/plenet">Peter L.</a>
CC BY 3.0
<a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=tQgDKTOtX3w">https://www.youtube.com/watch?v=tQgDKTOtX3w</a>