Elements of chemistry, including the recent discoveries and doctrines of the science / by Edward Turner.

  • Edward Turner
Date:
1833
Catalogue details

Licence: Public Domain Mark

Credit: Elements of chemistry, including the recent discoveries and doctrines of the science / by Edward Turner. Source: Wellcome Collection.

    88/1026 (page 60)
    FRIGORIFIC MIXTURES WITH SNOW.* SE aE ES CaS SEE SEGUE IONE ek ee ee MIXTURES. Thermometer sinks. Degree of Cold produced. Parts by weight. Muriate of Soda. (eo) Snow . P vate Ps to—5 Muriate of Soda. 2 EI Muriate of Ammonia 1} $ to —12° Snow : 4 a, Muriate of Soda 10 8 Muriate of Ammonia is) = Nitrate of Potash ! a6 oy to—18 Snow 3 i 24 P Muriate of Soda 5| 2 Nitrate of Ammonia 5) to—25° Snow . is ye inte fetid tS Acid-+ : from -+ 82° to—23° 55. degrees. Consents M eas cid 6 from + 32° to—27° 59 iprteenieeaod pak nie i from + 32° to—30° 62 yaad of Te 4 from + 32° to—40° 72 Crete Muriate ot Lime eg from + 32° to—50° 82 itm Potash é ; : 4 from + 32° to—51° 83 : But freezing mixtures may be made by the rapid solution of salts, without the use of snow or ice; and the following table, taken from Walker’s Essay in the Philosophical Transactions for 1795, includes the most important of them. The salts must be finely powdered and dry. MIXTURES. Temperature falls. Degree of Cold produced. Parts by Weight. Muriate of Ammonia 5 Nitrate of Potash . 5| from + 50° to + 10° 40 degrees. Water . 3 AIRE NE Muriate of Ammonia 5 Nitrate of Potash 5 Sulphate of at e 8 from +-50° to + 4° 46 Water . a 10 Nitrate of Ammonia. ] Wath * z _ 4| from + 50° to 44° 46 * The snow should be freshly fallen, dry, and uncompressed. If snow cannot be had, finely pounded ice may be substituted for it. t Made of strong acid, diluted with half its weight of snow or distilled water.