Antichlor

noun

1. A substance, such as sodium thiosulfate, used to neutralize the excess chlorine or hypochlorite left after bleaching textiles, fiber, or paper pulp.
2. In <em>bleaching</em>, any substance or means employed to remove or neutralize the injurious effects of the free chlorine left in cotton, linen, or paper which has been bleached by means of alkaline hypochlorites, as chlorid of lime, etc.
3. Any substance (but especially sodium hyposulphite) used in removing the excess of chlorine left in paper pulp or stuffs after bleaching.
4. Any substance used to remove excess <xref>chlorine</xref> or <xref>hypochlorite</xref> from <xref>textiles</xref> etc after <xref>bleaching</xref>; typically sodium thiosulfite