Home › Preservatives › To Preserve and Harden Hydrochloric Acid

To Preserve and Harden Hydrochloric Acid

.... 5 50° to 0° .50° " Wood. Wood steeped in a solution of cop- Sulphate of Soda.... peras becomes harder and more indestructible. Diluted Sulphuric Acid, 4 5 " 50° to 3° .47° " Sulphate of Soda...... 6 Muriate of Ammonia.. 4 " " Nitrate of Potash 2 “ 66 { 50° to -10° ...60* 1683. German Receipt for Coating Wood with a Substance as Hard as Stone. Melt together 40 parts chalk, 50 resin, and 4 linseed oil; to this should be added 1 part oxide of copper, and afterwards 1 part sulphuric acid. This last ingredient must be added carefully. The mixture, while hot, is applied with a brush, and forms, when dry, a varnish as hard as stone. This is an excellent application to protect posts, tubs, or other wooden articles which are set in the earth.

Diluted Nitric Acid.... 4 Sulphate of Soda Nitrate of Ammonia 6 Diluted Nitric Acid.... 4 of Ammonia... 5 " 50° to -14° ...64° " 1688. Table of Freezing Mixtures Snow. with Snow.

Mixtures. 1684. Το Preserve Wood Under Wa- Diluted Sulphuric Acid, 2 ter. Wood impregnated with creosote oil Snow has been found to resist effectually the ravages Muriatic Acid.. of the teredo worm; this worm being the Snow. cause of decay by honey-combing the entire Dilute Nitric Acid. substance of the wood. In Germany chloride Snow.... of zinc is used for this purpose, the timber be- Fahrenheit Degrees The mometer of Cold Sinks from Produced 3parts. } 32° to -23°.......55° 8 " 32° to -27° .59° 5 " 7 " 32° to -30°. 62° 4 66 } 32° to 40°. 72° " 32° to -50°. 82° 32° to-51°. ..83° Muriate of Lime... 5 Snow 2 ing placed in boilers, partly exhausted of Crys'd Muriate of Lime, 3 air, and the vapor of chlorine thus driven in- Snow.. to it. These remedies are recommended by a committee of practical experts, appointed by the Academy of Sciences in Holland to ascertain the best means for preserving timber under water. Potash 3 4 " " " } } 1689. Freezing Mixtures with Pounded Ice or Snow. The following mixtures reduce the temperature down to a certain degree of cold, irrespective of the temperature of the materials at mixing. Mixtures.

Snow, or Pounded Ice..