2282. To Keep Glue from Souring

2282.    To Keep Glue from Souring. If a little muriatic acid be put into glue when it is dissolved, ready for use, it will retain the glue in the same condition for a long time. It will neither dry up nor ferment. Liquid glue is made in this way, and sold in bottles. The use of a small portion of sugar of lead will also prevent fermentation.

2283. To Prepare Glue for Ready Use

2283.  To Prepare Glue for Ready Use. To any quantity of glue use common whiskey instead of water. Put both together in a bottle, cork it tight, and set it for 3 or 4 days, when it will be fit for use without the application of heat. Glue thus prepared will keep for years, and is at all times fit for use, except in very cold weather, when it should be set in warm water before using. To obviate the difficulty of the stopper getting tight by the glue drying in the mouth of the vessel, use a tin vessel with the cover fitting tight on the outside, to prevent the escape of the spirit by evaporation. A strong solution of isinglass made in the same manner is an excellent cement for leather.

2284. Liquid Glue

2284.    Liquid Glue. The preparation of liquid glue is based upon the property of the concentrated acid of vinegar and diluted nitric acid to dissolve the gelatine without destroying its cohesive qualities. Dumouiin has given the following receipt:

2285. Dumoulin's Liquid and Unalterable Glue

2285.    Dumoulin's Liquid and Unalterable Glue. Take a wide-mouthed bottle, and dissolve in it 8 ounces best glue in 1/2 pint water, by setting it in a vessel of water, and heating until dissolved. Then add slowly 21/2 ounces strong aqua fortis (nitric acid) 36° Baum'e, stirring all the while. Effervescence takes place under generation of nitrous gas. "When all the acid has been added, the liquid is allowed to cool. Keep it well corked, and it will be ready for use at any moment. This preparation does not gelatinize, nor undergo putrefaction or fermentation. It is applicable for many domestic uses, such as mending china, repairing cabinet work, etc..

2286. Russian Liquid Glue

2286.    Russian Liquid Glue. This is prepared by softening 100 parts best Russian glue in 100 parts warm water, and then adding slowly from 51/2 to 6 parts aqua fortis, and finally 6 parts powdered sulphate of lead. The latter is used in order to impart to it a white color.

2287. Pale Liquid Glue

2287.    Pale Liquid Glue. Dissolve in a glass vessel 100 parts pale "steam glue" in double its weight of water, and add 12 parts aqua fortis as directed in Dumoulin's receipt. (See No. 2285 (Dumoulin's Liquid and Unalterable Glue).)

2288. Dark Liquid Glue

2288.    Dark Liquid Glue. Put 100 parts dark " steam glue " and 140 parts water in a wide-mouthed glass bottle, and dissolve the glue in the water, then add slowly 16 parts aqua fortis, stirring all the while. "When all the acid is added, the liquid is allowed to cool. Cork well. This liquid glue exhibits a greater cohesive force than that prepared after Du-moulin's receipt. (See No. 2285 (Dumoulin's Liquid and Unalterable Glue).) However, still better kinds of liquid glue or mucilage are obtained by dissolving gelatine or dextrine in acetic acid and alcohol.