Chemical Utilization of Southern Pine Waste
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1, p. 499) at 346, and for convenience this figure has been taken as an approximation of the combining weight of the rosin in the chips under consideration. On this basis rosin would require 31/346 =8. 96 per cent of its weight of Na 2 O to produce a neutral sodium resinate. The wood under consideration contained 32. 1 per cent of rosin, so that 100 parts of resinous wood required at least 2. 88 parts of Na 2 for complete saponification of the rosin therein. The amounts of NaaO actually used ha...ve been expressed as multiples of this unit value. The attempt was to find the least amount of caus- tic which would completely extract the rosin before neutralization of alkali by the rosin and humic acids, under conditions allowing efficient turpentine distillation and still preventing undue attack of the wood itself. With the preliminary extraction continued for 3. 5-4 hours at 15-30 pounds pressure, the lower limit for NaOH was found to lie somewhere between 2. 17 (Expt. 3) and 3. 0 (Expt. 6) times the theoretical amount of caustic.
What to read after Chemical Utilization of Southern Pine Waste?
You can find similar books in the "Read Also" column, or choose other free books by John Seaman Bates to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
1, p. 499) at 346, and for convenience this figure has been taken as an approximation of the combining weight of the rosin in the chips under consideration. On this basis rosin would require 31/346 =8. 96 per cent of its weight of Na 2 O to produce a neutral sodium resinate. The wood under consideration contained 32. 1 per cent of rosin, so that 100 parts of resinous wood required at least 2. 88 parts of Na 2 for complete saponification of the rosin therein. The amounts of NaaO actually used ha...ve been expressed as multiples of this unit value. The attempt was to find the least amount of caus- tic which would completely extract the rosin before neutralization of alkali by the rosin and humic acids, under conditions allowing efficient turpentine distillation and still preventing undue attack of the wood itself. With the preliminary extraction continued for 3. 5-4 hours at 15-30 pounds pressure, the lower limit for NaOH was found to lie somewhere between 2. 17 (Expt. 3) and 3. 0 (Expt. 6) times the theoretical amount of caustic.
What to read after Chemical Utilization of Southern Pine Waste?
You can find similar books in the "Read Also" column, or choose other free books by John Seaman Bates to read onlineMoreLess
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