A practical treatise on the manufacture of soap and candles .. (1888)
Brannt, William T. (William Theodore), b. 1844, Deite, C. (Carl), 1838-1921, Engelhardt, Alwin, Schaedler, Karl, 1843-1891 · Philadelphia, H. C. Baird & co.; [etc., etc.] · leaf 61
until no trace of sulphuric acid is found. The yield depends on the nature, purity, and treatment of thetallow, and varies between 92 and 95 per cent, of the fat used.It must further be taken into consideration that the large quan-tity of gypsum separated always envelopes a certain portion ofthe… … WnEnra^1— Frame for Congealing Fatty Acids.Front view. Cross section. A, wooden frame ; B, iron rods ; C, trays ; 2>, funnel for filling trays ; E, wooden plug ; F, pipe from reservoir. The fatty acids having been thoroughly freed by repeatedwashing from gypsum, sulphuric acid, etc., are allowed…
Soap · Candles · Decorative arts
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