The glycerol content is ascertained by taking 2.5 grammes, adding lead subacetate solution, and filtering without increasing the bulk more than is absolutely necessary; the solution is concentrated to about 25 c.c., and the oxidation with bichromate and sulphuric acid conducted as described in the examination of Crude Glycerine. ❋ H. A. Appleton (N/A)
In such case, before making up to the mark, a saturated solution of subacetate of lead is added. ❋ Various (N/A)
If the proper amount has been added, the precipitate will usually subside rapidly, but if not, the operator may judge of the completeness of the precipitation by holding the flask above the level of the eye and allowing an additional drop of subacetate of lead to flow down the side of the flask into the solution; if this drop leaves ❋ Various (N/A)
After adding the solution of subacetate of lead the flask must be gently shaken, so as to mix it with the sugar solution. ❋ Various (N/A)
The use of subacetate of lead should, in all cases, be followed by the addition of "alumina cream" (aluminic hydrate suspended in water) [2] in about double the volume of the subacetate solution used, for the purpose of completing the clarification, precipitating excess of lead, and facilitating filtration. ❋ Various (N/A)
The operator must learn by experience the point where the addition should cease; a decided excess of subacetate of lead solution should never be used. ❋ Various (N/A)
Excess of subacetate of lead solution in clarification. ❋ Various (N/A)
In many cases of high grade sugars, especially beet sugars, the use of alumina alone will be sufficient for clarification without the previous addition of subacetate of lead. ❋ Various (N/A)
Take of lard 1 oz., solution of subacetate of lead 25 drops, tinc. of opium 1 drm.; mix well. ❋ Daniel Young (N/A)
Take of lard 7-1/2 drms., creosote 10 drops, solution of subacetate of lead 10 drops, watery extract of opium 1 grain; mix. ❋ Daniel Young (N/A)
The most important are the sulphate, subacetate, and arsenite. ❋ Unknown (N/A)
The most characteristic test for the gas is a white precipitate, which is produced by passing it into lime or baryta-water, or into a solution of subacetate of lead. ❋ Cornelius Beringer (1886)
Both are crystalline, resinous substances, and, although resembling each other in many respects, the chemist may distinguish them by their reaction, for both yield a precipitate if treated with subacetate of lead, but only the glycocholate will give a precipitate with acetate of lead. ❋ Ray Vaughn Pierce (1877)
'Copper' -- Both the verdigris, or subacetate, and the blue vitriol of sulphate of copper, are now comparatively rarely used. ❋ William Youatt (1811)
Bleeding, aperient and cooling medicines are indicated, and also applications of the subacetate of lead, or spermaceti ointment. ❋ William Youatt (1811)
_e. g._, silver oxide, silver carbonate and lead subacetate, and copper sulphate and caustic potash, but the lead subacetate alone with care gives satisfactory results. ❋ H. A. Appleton (N/A)
a clear track along the glass through the solution it indicates that the precipitation is complete; if, on the other hand, all traces of the drop are lost on entering the solution, it indicates that an additional small quantity of the subacetate of lead is required. ❋ Various (N/A)
By this procedure a cream of aluminum hydroxide is obtained suspended in a solution of ammonium sulphate, the presence of which is not at all detrimental for sugar work when added after subacetate of lead, the ammonium sulphate precipitating whatever excess of lead may be present.] ❋ Various (N/A)
Dissolve the salts in the acid, add little by little the subacetate of lead, and well shake the mixture.] ❋ Harry Caulton Reeks (N/A)
