
<chemical> Alpha-(4-nonylphenyl)-omega-hydroxypoly(oxy-1,2-ethanediyl). Nonionic surfactant mixtures varying in the number of repeating ethoxy (oxy-1,2-ethanediyl) groups. They are used as detergents, emulsifiers, wetting agents, defoaming agents, etc. Nonoxynol-9, the compound with 9 repeating ethoxy groups, is a spermatocide, formulated pri...
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http://www.encyclo.co.uk/local/20973

(non-ok´sĭ-nol) any of a group of compounds of the general composition, C15H24O(C2H4O)n, which are assigned a number according to the value of n. Nonoxynol 4, 15, and 30 are nonionic surfactants; nonoxynol 9 is a spermicide.
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http://www.encyclo.co.uk/local/21001

Nonoxynol: Nonoxynol-9 is the most commonly encountered spermatocide in the United States. As with other spermatocides, it destroys spermatozoa; it kills sperm. The nonoxynols, technically speaking, are nonionic surfactant [surface active] mixtures that vary in the number of repeating ethoxy groups. They are much used as detergents, emulsifiers, we...
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http://www.medterms.com/script/main/art.asp?articlekey=10014
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