[Pg 1]
ON
SULPHONFLUORESCEÏN
AND SOME OF ITS DERIVATIVES.
DISSERTATION
Presented for the Degree
of
Doctor of Philosophy
at the
Johns Hopkins University
by
C. Willard Hayes,

1887.[Pg 2]
CONTENTS
  p.
 Introduction 3.
I  Ortho-sulpho-benzoic acid. 
 Preparation from toluene and H2SO4 7.
    ”   ” para-nitro-toluene and H2SO4 8.
 Oxidation  of  toluene - o - sodium sulphonate12.
 Preparation of Sulphinide from ”   ”14.
   ”    ”   ”  by chlorsulphonic acid.17.
 Conversion of sulphinide into o-sulphobenzoic acid.  25.
 Analysis of and crystallography of  ”  ”   ”28.
II  Sulphonfluoresceïn—previous attempts29.
 Preparation and purification of s-fluoresceïn30.
 Analyses of          ”34.
 Properties of          ”35.
 Salts. Ba. and Ca. of       ”37.
 Acetyl derivative of        ”41.
 Br substitution products of    ”42.
 Action of H2SO4 on       ”44.
 Action of HCl on         ”45.
 Reduction of          ”46.
 Conclusion.47....                        
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