Toxicology
• Alkylphenol ethoxylates are non-ionic surfactants (Warhurst AM, 1995)
• Alkylphenols includes nonylphenol (most predominant) and octylphenol (Warhurst AM, 1995; Kayama et al., 2003)
• Alkylphenol ethoxylates are biodegraded by removal of ethoxy group(Warhurst AM, 1995)
• The LC50 of alkylphenol ethoxylates is above 1.5 mg /L, whereas that of nonylphenol is about 0.1 mg/L(Warhurst AM, 1995)
• Metabolites of alkylphenol ethoxylates are generally more toxic than the parent compound(Warhurst AM, 1995)
• Alkylphenols are estrogenic through endocrine disruption. However, mammals are less sensitive to nonylphenol than fish(Warhurst AM, 1995; Kayama et al., 2003)
• The toxicity of . . .
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