M. Schiff on Chloride of Thionyle. 277 
obtained in prisms. This acid forms salts with bases which are 
mostly crystalline, and have a yellow colour. The other modi- 
fication is prepared by the gradual addition of nitric acid to an 
aqueous solution of phloretic acid; it has, when pure, the same 
degree of solubility as the other modification, and the same 
composition, but crystallizes in dark, golden-yellow plates and 
scales of the greatest beauty. There seems to exist between 
these two modifications the same relations as between nitro- 
salicylic and anilotinic acids*. All attempts to prepare a mono- 
nitrophloretic acid were ineffectual. 
: - _., C'8H7 Br? 05 ' 
Bibromphloretic acid, H Of Prepared by the action of 
bromine on phloretic acid, crystallizes in colourless, hard prisms, 
and forms salts with ammonia and baryta. 
Phloretylaminie acid, C}® H" NO4, produced by the action of 
dry ammonia on phloretic «ther, is homologous with salicyl- 
aminic acid, the body hitherto generally considered as salicyl- 
amide. Its acid character is not very decided; it does not 
decompose carbonates, but appears to form compounds with 
alkalies. 
Chloride of phloretyle, produced by the action of pentachloride 
of phosphorus on phloretic acid, has the formula C8 H8 O2,. Cl. 
Salicylate of baryta gives on destructive distillation, carbonate 
of baryta, and an oil which is phenylic alcohol, C!2 Hé 02, By 
treating phloretate of baryta mixed with caustic lime in the same 
manner, an oily brownish distillate is obtained, which when 
purified is colourless, strongly refracting, has an aromatic odour 
somewhat resembling phenylic alcohol, and a burning taste ; 
coagulates albumen almost as rapidly as phenylic alcohol ; forms 
with sulphuric acid a copulated acid, and with bromine and 
chlorine substitution products. Its boiling-point is about 220°. 
Its formula is C!* H! 02, and it forms with nitric acid a substi- 
tution product occurring in yellow crystals, which has the for- 
mula C16 (vos 0”, and would thus be homologous with nitro- 
picric acid. The body C!6 H!° 0? is evidently, from its proper- 
ties, mode of formation and formula, the homologue of hydrated 
oxide of phenyle, and would be xylenyle alcohol, the alcohol of 
the xylole+ series, whose theoretical boiling-point would be 
225° C. 
By the action of dry sulphurous acid on pentachloride of 
phosphorus, a clear, strongly refracting liquid is obtained, which 
has the formula PCl® S? 04, and has been considered to be sul- 
* Phil. Mag. June 1856. + Ibid. 
