Elements of pharmacy, materia medica, and therapeutics. / By William Whitla.
- William Whitla
- Date:
- 1882
Licence: Public Domain Mark
Credit: Elements of pharmacy, materia medica, and therapeutics. / By William Whitla. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![i(c)—Its solution gives no j'pt. with Nitrate of Silver (AgNOg), or Chloride of Barium (BaClj), (absence of Chlorides and Sul- phates). Sodae Phosphas (Na,HP04l2H20). C&,2P0, + 2H,S04 = CaH^2P0, + 2CaS0^ CaH^2P0, + Na,C03 = Na HPO^ + H.0 -i- CO, + CaHPO^ / (a)—In transparent, colourless rliomljic prisms, ( efflorescent and tasting like common salt. (Z*)—Its solution in water has a faintly alkaline reaction. It gives a yellow ppt (AggPO^), with Nitrate of Silver (AgNO^), the resulting fluid becoming Acid. Tests— I (c)—Heated to dull redness it loses 63 per cent, of its weight, leaving a residue which, when dissolved in water, gives with Chloride of Barium (BaC]„) a ppt. almost entirely soluble in diluted Nitric Acid (HNO3), ab- sence of more than a trace of Sulphate of Sodaj. Sodae Sulphas (Na.SO.lOH.O). NaCl + H,S04 - HCl + NaHSO, 2HNaS0. + Na.COs = 2Na,S04 + H,0 + CO, '(«)—In transparent, oblique prisms ; has a salt and bitter taste, efflorescent. Soluble in water, insoluble in spirit. [h)—Exposed to heat in a porcelain crucible it loses Tests—55-9 per cent of water. (c)—Heated with solution of Potash (KHO) no smell of Ammonia (NH^HO) is evolved (absence of Ammonium Salts), and no ppt. is formed (absence of Iron or Manganese). Sodae Valerianas (NaC5H.,0). C,H„HO + 0, = C,H,A + HO C,H,„0, + NaHO = NaC,R,0, h H,0 (a)—lu white masses, without alkaline reaction (absence of free soda), entirely soluble in ^ I spirit (absence of Carbonate of Soda). {}>)—Gives out a powerful smell of valerian on the addition to it of diluted Sulphuric Acid (H.,SO,).](https://iiif.wellcomecollection.org/image/b21507296_0508.jp2/full/800%2C/0/default.jpg)
