Manual of qualitative analysis / by Robert Galloway.

  • Galloway, Robert.
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: Manual of qualitative analysis / by Robert Galloway. Source: Wellcome Collection.

    230/272 (page 212)
    TABI A. (1)—CovrRsE OF BLOWPIPE OPERATIONS TO WHICH SUB- STANCES MUST BE SUBMITTED BEFORE COMMENCING THEIR ANALYSIS IN THE HUMID WAY. Heat the substance in a glass tube, sealed at one end, by means of a spirit-lamp. Examine whether it hasan adka- line or acid reaction; if the former, probably due to am- mona. {“s either to its presence in the Condenses on the cold sides ep WATER of the tube . a ee oc SULPHUR free state,-or the partial re- limate duction of a sulphide. 2 ees OrGanic Matter . Charcoal being left. blackens . . charcoal,when heated on it in the open air. Gives a yellowish-red coating to CADMIUM Metals vola- ‘ Seicies oct tilized MERCURY, s.7... %. Condenses in liquid drops. The interior surface of the sub- eee limate is crystalline. The odour of garlic is evolved. OxIpE oF ANTIMONY Sublimes without fusing. Volatileoxides { ARsENIOUS AcID . Condenses in white crystals. Converted into arsenious acid pea ACID , and oxygen. monia_ vola- Ascertained by their action on red and blue litmus tilized Acids and Am- paper. Volatilized unaltered, ex- AMMONIACAL Satts cept when the alkali is in combination with the Volatile Salts fixed acids. Yellow sublimatie ; iodide of mercury. Many CHLORIDES OF THE FIXED OXIDES. Most Sats oF MERCURY If the substance is completely volatile, ammonia, mercury, arsenic, antimony, and sulphur, need only be looked for.