hyposulphate

-- A blue bottle containing 160 grammes of a clear fluid with a slight black deposit, consisting of a mixture of equal parts of a 14 per cent. solution of sodic hyposulphate, and a 4 per cent. solution of lead acetate.

Scientific American Supplement, No. 324, March 18, 1882 Various

The water was so warm that the gelatine frilled in spite of alum, and what was worse, when I put the negatives in the hyposulphate of soda they ran off their supports like so much hot starch.

Southern Arabia Mabel Bent

Dissolve four ounces of hyposulphate of soda in one gallon of water and add corn meal to make a heavy dough, and give an ordinary feed of this twice a day for six days, and then once a week through the summer months.

One Thousand Secrets of Wise and Rich Men Revealed C. A. Bogardus

I attribute the fading to the hyposulphate not being got rid of; and the question is, Can the picture he restored?

Notes and Queries, Number 185, May 14, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. Various 1852

By using, however, instead of the iodide of potassium, a weak solution of ammonia, as recommended by Mr. Hunt, a less degree of intensity may be produced again a less intensity by hyposulphate of soda and a less degree again, but still a slight darkening, by pouring on the bichloride and pouring it off at once before the whitening commences.

Notes and Queries, Number 207, October 15, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. Various 1852