Insoluble except those 

 of alkali metals. 



44, PHARMACY 



2. Halogen group = (iodids, bromides and chlorides) : solu- 



ble except Ag; Hg (ous) ; Pb; Bi. 



3. Sulphates: soluble except Pb, Ba, Sr; Ca sparingly 



soluble. 



4. Tartrates and Citrates mostly soluble. 



Group B. Salts mostly insoluble. 



1. Arsenates 

 Ar seniles 

 Carbonates 



Hydrates (Ca sparingly soluble) 

 Oxides 

 Oxalates 

 Borates 

 Phosphates 



II. Arranged by Base. 



The salts considered in this table are: Acetates (Ac), Oxides 

 (O), Halogens (H), Sulphates (SOJ, Phosphates (PO4), Oxalates 

 (Oj, Carbonates (CO3), Sulphides (S), Nitrates (NO3), Citrates 

 (Ci) ; Hydrates agree with oxides. Those of the above salts which 

 are not mentioned with the respective base are insoluble. 



1. Alkali Metals (Na, K, 1^11^) : all soluble. 



2. Lithium: soluble, except O and CO3, sparingly soluble, 



and PO4, insoluble. 



3. Mg, Al: soluble: NO3, Ac, H, Ci, SO^, S. 



4. Ca, Ba, Sr: soluble: l^Og, Ac, H, Ci, S; sparingly: O, 



Mn, Zn, m, Co, Fe, |Soluble: ^03, Ac, H, Ci, 



5. Hg (ic), Cu, Sn. JSO4 (Mercuric iodid is insoluble) 



6. Ag:N03, SO4. 



7. Pb: NO3, Ac. 



8. Bi, Sb : only soluble in form of double organic salts (e.g., 



Bismuth and Ammonium citrate ; Antimony and Potas- 

 sium Tartrate). 



9. Mercurous: insoluble. 



III. Strength of Watery Solutions in Avhich commonly used 

 salts may be prescribed. — It must be remembered that where 

 several salts are prescribed in the same mixture, the solubility of 

 each is apt to be lowered. The exact solubility will be found in 

 another place. 



The following table gives the amount of very commonly used 

 drugs which can be safely prescribed in water to make 100 mils : 



50 gms. (= .^iv in water q.s.§i). Tannin; Antipyrine, Ace- 

 tate, Citrate, Salicylate, Iodide or Bromide of Potassium 



