HCl has been observed in the stratosphere from balloon borne spectroscopic measurements of a portion of the fundamental band in the 3 microns wavelength region. The observation of absorption lines using the sun as a source at solar zenith angles larger than 90¿ indicates an HCl volume mixing ratio equal to (3.8¿1.5) ¿10-10 at 20 km increasing with altitude at least up to 30 km where the values is (1.4¿0.6) ¿10-9. The total zenith amount above 21 km is found to be (10¿3.5) ¿1014 cm-2 in agreement with previous observations performed up to this altitude. A maximum number density equal to (7.2¿3) ¿108 cm-3 is observed at 24¿2 km altitude.