The synthetic dyestuffs : and the intermediate products from which they are derived (1905)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872-1940 · London : C. Griffen and Co. · leaf 322
e reagent is prepared to completely fill the storage vessel a,which is connected with the burette b, both storage vessel and burette beingkept under constant hydrogen pressure from the small hydrogen generator d.where the gas is produced from zinc and dilute sulphuric acid. When liquidis withdrawn… … Fig. 13. If these precautions are taken the solution can be kept unchanged for aconsiderable period. Standardising the titanous chloride solution can be effected in the followingway :—35 grams of ferrous ammonium sulphate are dissolved in dilute sulphuricacid and made up to 1 litre; 25 c.c. of this…
Dyes and dyeing
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