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alkalies

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alkalies


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Alkali  \Al"ka*li\  (?;  277),  n.;  pl  {Alkalis}  or  {Alkalies}.  [F. 
  alcali  ultimately  fr  Ar  alqal[=i]  ashes  of  the  plant 
  saltwort,  fr  qalay  to  roast  in  a  pan,  fry.] 
  1.  Soda  ash;  caustic  soda,  caustic  potash,  etc 
 
  2.  (Chem.)  One  of  a  class  of  caustic  bases,  such  as  soda, 
  potash,  ammonia,  and  lithia,  whose  distinguishing 
  peculiarities  are  solubility  in  alcohol  and  water,  uniting 
  with  oils  and  fats  to  form  soap,  neutralizing  and  forming 
  salts  with  acids,  turning  to  brown  several  vegetable 
  yellows,  and  changing  reddened  litmus  to  blue. 
 
  {Fixed  alkalies},  potash  and  soda. 
 
  {Vegetable  alkalies}.  Same  as  {Alkaloids}. 
 
  {Volatile  alkali},  ammonia,  so  called  in  distinction  from  the 
  fixed  alkalies. 




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