精萘对人体有多种危害，主要包括：

　　Naphthalene poses various hazards to the human body, including:

　　急性中毒：短时间内吸入大量萘蒸气或粉尘，可能导致眼及呼吸道刺激、角膜混浊、头痛、恶心、呕吐、食欲减退、腰痛、尿频等症状。严重时可能出现中毒性脑病、肝损害、溶血性贫血及肝、肾损害，甚至导致急性肾功能衰竭和肝坏死。

　　Acute poisoning: Inhaling large amounts of naphthalene vapor or dust in a short period of time may cause symptoms such as eye and respiratory irritation, corneal opacity, headache, nausea, vomiting, decreased appetite, lower back pain, and frequent urination. In severe cases, toxic encephalopathy, liver damage, hemolytic anemia, liver and kidney damage, and even acute renal failure and liver necrosis may occur.

　　慢性中毒：长期接触萘蒸气可能引起头痛、乏力、恶心、呕吐和血液系统损害，如白细胞减少、血小板减少等。还可能引起白内障、视神经炎和视网膜病变，以及皮炎。

　　Chronic poisoning: Long term exposure to naphthalene vapor may cause headaches, fatigue, nausea, vomiting, and blood system damage, such as leukopenia, thrombocytopenia, etc. It may also cause cataracts, optic neuritis, retinopathy, and dermatitis.

　　致癌作用：高浓度的精萘可能诱发肝癌和肺癌等癌症。

　　Carcinogenic effects: High concentrations of naphthalene may induce cancers such as liver cancer and lung cancer.

　　生殖毒性：影响男性和女性的生殖能力、性腺功能和胎儿发育。

　　Reproductive toxicity: affects the reproductive ability, gonadal function, and fetal development of both males and females.

　　呼吸系统危害：长时间吸入精萘蒸气会引发哮喘和其他呼吸系统问题。

　　Respiratory hazards: Long term inhalation of naphthalene vapor can cause asthma and other respiratory problems.

　　因此，在接触精萘时，必须采取适当的防护措施，如佩戴过滤式防毒面具、空气呼吸器和化学防护眼镜，并在工作现场加强通风和个人防护。

　　Therefore, appropriate protective measures must be taken when in contact with refined naphthalene, such as wearing filter gas masks, air respirators, and chemical protective goggles, and strengthening ventilation and personal protection at the work site.

　　本文由精萘厂家的相关内容请点击：http://www.jnjdbc.cn希望本文能够为您带来帮助，感谢您的阅读！

　　Please click on the relevant content from the refined naphthalene manufacturer in this article: http://www.jnjdbc.cn I hope this article can be helpful to you. Thank you for reading!