我国过去铁路所用木材防腐剂,几乎全部为油状防腐剂和粘稠油载防腐剂。为了扩大防腐木材在造船、建筑、坑木和民用家具等方面的应用,需要无色或浅色,无臭,低毒,以及能在防腐木材上喷涂油漆的木材防腐剂。现在国外应用最广泛的防腐剂为加铬砷酸铜(CCA)及氨溶砷酸铜(ACA)。我们曾作过ACA的毒性试验证明其毒性较低。关于CCA的毒性,国外曾作过动物毒性试验及调查研究,认为使用时对人畜比较安全。CCA In the past, the wood preservatives used by the railway in our country were almost all oily preservatives and viscous oil preservatives. In order to expand the use of anti-corrosion wood in shipbuilding, construction, pit and civil furniture, there is a need for a wood preservative that is colorless or light-colored, odorless, low-toxic and can be sprayed on anticorrosive wood. At present, the most widely used preservatives abroad are CCA and ACA. We have done ACA toxicity tests to prove its toxicity is low. On the toxicity of CCA, foreign countries have made animal toxicity tests and research that the use of human and animal more secure. CCA