Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
In addition, this page directs the use of hazardous substances — such as benzine, gasoline, lye, or strong acids — for household tasks. These materials are highly flammable, corrosive, or poisonous, and the practices described have caused fires, burns, and poisonings.
This information has been left in for historical purposes but should not be acted upon.
Home › The Art Of Dyeing › To Remove Iron Stains
To Remove Iron Stains
Take a little hydrochloric acid in a basin or saucer, and make it slightly warm, then dip the iron stain into the acid for about 1 minute, which will dissolve the oxide of iron; the cloth must be well washed from this, first in water, then in a little soda and water, so as to remove all trace of acid. A little oxalic acid pint bleaching liquor (see No. 104) to every may be used instead of hydrochloric, but gallon of water in the vessel, and work the more time is required, and with old fixed yarn in this for half an hour. Into another spots is not so effective. The same precauvestel of similar size, two-thirds filled with tions are necessary in washing out the acid, cold water, add one wine-glassful sulphuric as oxalic acid dried in the cloth injures it. acid for every 2 gallons water; stir well, and 128. To Remove Mildew from Cotthen put the yarn from the bleaching solution ton. Proceed with the stains by rubbing in into this, and work for 10 minutes; then wash soap or steeping in a little soda, washing, and out until all the acid is removed. This will then steeping in bleaching liquor (see No. 104), Heach the yam for Cycing any light chal. er by putting a wine-glassful of the stock liquor (see No. 101) in 1 pint of water; after- | Into a tub of cold water put 1 imperial pint of wards wash, pass through a sour (see No. 105), nitrate of iron and 2 gills hydrochloric acid, and wash again.