二氯苯氧氯酚，俗名“三氯生”，又名“三氯新”、“三氯沙”等，化学名为“2,4,4'-三氯-2'-羟基-二苯醚”，英文名为 Triclosan 、 Aquasept、 ****phen、 Irgasan、 Sapoderm 、 Ster_Zac。

二氯苯氧氯酚常态为白色或灰白色晶状粉末，稍有酚臭味。不溶于水，易溶于碱液和有机溶剂。二氯苯氧氯酚是一种广谱抗菌剂，被广泛应用于肥皂、牙膏等日用化学品之中。根据目前的研究及的指引，二氯苯氧氯酚仍被视为安全，但不少在动物及细菌的研究显示可能对人体有产生潜在危害，美国食品药品监督管理局及加拿大政府正加紧进行科学研究，期望进一步了解二氯苯氧氯酚对人体的影响。

Triclosan, similar in its uses and mechanism of action to triclocarban, is an antibacterial and antifungal agent found in consumer products, including toothpaste, soaps, detergents, toys, and surgical cleaning treatments. Its efficacy as an antimicrobial agent, the risk of bacterial resistance and its possible role in disrupted hormonal development remain controversial. Additional research seeks to understand its potential effects on organisms and environmental health.