Verification of phenol with the Liebermann-Test


Chemicals needed

distilled water

sodium nitrite GSBRANDF.gif (891 Byte) O GSGiftig.gif (734 Byte) T GSUMWELT.gif (758 Byte)  N    R 8-25-50     S (1/2)-45-61

phenol GSATZEND.gif (935 Byte) C GSGiftig.gif (734 Byte) T     R 24/25-34    S (1/2)-28-45

sulphuric acid 96%  GSATZEND.gif (935 Byte) C    R 35   S (1/2)-26-30-45


Information concerning dangerous substances

4-nitrosophenol GSGESUND.gif (476 Byte) Xn GSUMWELT.gif (758 Byte)  N    R 22-40-41-51/53     S (2)-26-36/37/39-47-49-61


Equipment needed

a not too small test tube


Test procedure


Disposal


Elucidation

See the literature


Photos

DSCN0096.JPG (234542 Byte)

The reaction mixture after adding concentrated sulphuric acid.

DSCN0104.JPG (227766 Byte)  DSCN0105.JPG (175044 Byte)

The reaction mixture after adding water.


Literature

derived from XV.3 "Phenolnachweis durch die Liebermann-Probe", p. 172, [3]