Extractives were taken from the bark of Pinus halepensis, using water, 1% NaOH and 5% NaOH (with and without sulfonation), with resultant extract yields higher for the NaOH extracts than for those with water only. The NaOH extracts, however, showed lower reactivity. 30 days' storage in liquid or solid form had little influence on their viscosity, pH value and reactivity. At 33% concentration and pH's of 4 to 12 extracts done with water (with and without sulfonation) and with 1% NaOH solution (with sulfonation) showed high reactivity to formaldehyde. Extracts at pH 7 to 8 had short gelation times and longer ones at pH 4 (water extraction) and pH 10 (extraction with 1% NaOH solution, with sulfonation). The remaining three extracts proved unsuitable for further use as bonding agents, either due to their high viscosity or to their inability to cure. With the use of paraformaldehyde as hardener gelation times tended to become longer.