| The reaction of the sodium hydrosulphite with the caustic water was expected to generate steam and sulfur dioxide. |
| Here again the hydrosulphite takes up oxygen from the water and liberates the necessary hydrogen. |
| The constituents of the hydrosulphite vat are hydrosulphite of soda, lime and indigo. |
| Of such vats the copperas and lime and the hydrosulphite vats are examples. |
| Ammonium persulphate, sodium hydrosulphite, and sodium dodecylsulfate were purchased from Longxi Fine Chemical, and were used without further purification. |
| If staining is very stubborn, diluted bleach may be used providing the skin is then neutralised with sodium hydrosulphite and rinsed thoroughly. |
