SPECIFIC GRAVITY TABLES. 



91 



3d. PYROPHOSPHATES. 



Name. 



Formula. 



'Sodium pyrophosph ate 'Na^ Pj O.. 10 H^ O. 



^° Silver 

 "Thallium 



Ag, P, 0,. 

 TL P, O,. 



Specific 

 Gravity. 



1.836. 



5.306. 

 6.786. 



Boiling Melting 

 Point. Point. 



XXIX. Vanadates. 



AUTHORITIES. 



