1863 Fownes' Chem. (ed. 9) 494Trioxethylenamine.
1880 Miller Elem. Chem. III. 552Trioxynaphthalene: C10H5(OH)3, is formed in a similar manner.
1880 Jrnl. Chem. Soc. XXXVIII. 25The distillate left a white amorphous residue..which proved to be identical with trioxymethylene, C3H6O3.
1900 Smith Richter'sOrg. Chem. (ed. 3) II. 230Trioxybenzoic acids, (HO)3C6H2CO2H. Three of the six possible isomerides are known.
1964 N. G. Clark Mod. Org. Chem. x. 188On distilling aqueous formaldehyde with a trace of sulphuric acid, trioxan (‘trioxymethylene’) is obtained.
trioxy-
combining form
Etymology: International Scientific Vocabulary tri- + oxy-
: containing three oxy groups