• Webster's Revised Unabridged Dictionary
    • n Sulphonal (Med) A substance employed as a hypnotic, produced by the union of mercaptan and acetone.
    • ***
Century Dictionary and Cyclopedia
    • n sulphonal Diethyl sulphon-di-methyl-methane, (CH3)2C.(C2H5SO2)2, a hypnotic of considerable value.
    • ***


In literature:

He takes philanthropy just as he'd take sulphonal for sleeplessness.
"Fraternity" by John Galsworthy
I am obliged to keep something, sulphonal or chloral, by me, on purpose.
"The Rome Express" by Arthur Griffiths
You were kept in bed and dosed with bromides and sulphonal.
"The Dangerous Age" by Karin Michaƫlis
Yes; I've tried sulphonal and all that rot; if doesn't have any effect on me.
"The Climbers" by Clyde Fitch
Promise me you won't take any sulphonal!
"A Pair of Patient Lovers" by William Dean Howells
And there was a time, as you already know, when I used to take bromide and sometimes even sulphonal to make me sleep!
"The Prairie Wife" by Arthur Stringer
Sulphon Cyanine, and 1-1/2 lb.
"The Dyeing of Woollen Fabrics" by Franklin Beech
Sulphon azurine D, 2 lb.
"The Dyeing of Cotton Fabrics" by Franklin Beech
It is proposed to accomplish this by sulphonating part of the fat used in making the soap.
"The Handbook of Soap Manufacture" by W. H. Simmons
Acetanilid, sulphonal, phenacetin, and other drugs of this class may provoke like eruptions.
"Essentials of Diseases of the Skin" by Henry Weightman Stelwagon