Abstract
This is a continued study on the same subject as appeared in Vol. No. No. 1 and carries the result of electric titration on the waste liquor under ordinary and high pressure. The essential points are as follows. 1) The conditon of alkali consumption on was carefully checked by means of electric titration of waste liquor. It shows free alkalideing produced in waste liquor when the concentration gets over 6-7% under ordinary pressure and over 10% under high pressure; 2) The result of the present study does not give immediate judgement as to the presence of free alkali in waste liquor and the extent of affecting the nature of pulp but it is presumed the point is reached when the liquor gives Ph no. around 11. 3) Certain chemical molecular relations exist between combined alkali and dissolved organic matters. 4) In A/Na ratio, the average molecular weight of a at around 6.5 under high pressure and 75 under ordinary pressure if about 150-160. 5) Two kind of organic acids are observed as a result of titration of waste Liquor KA1=10-410-5 and KA2=10-11. The mol ratio of A1 is higher by almost 5-10 times.
