1.用五氧化二釩和硫酸鉀作催化劑，硅膠作載體，于385-390℃用空氣氧化得到鄰苯二甲酸酐。在乙酸溶液中用氧化鉻進(jìn)行氧化，生成α-萘醌。加氫生成四氫化萘，進(jìn)一步加氫則生成十氫化萘。在氯化鐵催化下，將氯氣通入萘的苯溶液中，主要得到α-氯萘。光照下與氯作用則生成四氯化萘。萘的硝化比苯容易，常溫下即可進(jìn)行，主要產(chǎn)物是α-硝基萘。萘的磺化產(chǎn)物和溫度有關(guān)，低溫得到α-萘磺酸，較高的溫度下，主要得到β-萘磺酸。

1. Using vanadium pentoxide and potassium sulfate as catalysts, silica gel as a carrier, and air oxidation at 385-390 ℃ to obtain phthalic anhydride. Oxidize with chromium oxide in acetic acid solution to generate α- Naphthoquinone. Hydrogenation produces tetrahydronaphthalene, and further hydrogenation produces decahydronaphthalene. Under the catalysis of ferric chloride, introducing chlorine gas into a benzene solution of naphthalene mainly yields α- Chloronaphthalene. Under light, it reacts with chlorine to produce naphthalene tetrachloride. The nitration of naphthalene is easier than that of benzene and can be carried out at room temperature. The main product is α- Nitronaphthalene. The sulfonation products of naphthalene are temperature dependent and can be obtained at low temperatures α- Naphthalenesulfonic acid, at higher temperatures, mainly yields β- Naphthalenesulfonic acid.

2.萘的水溶性較小，而且不易被吸收，故其毒性不太強(qiáng)。吸入濃的萘蒸氣或萘粉末時(shí)，能促使人嘔吐，不適，頭痛。特別是損害眼角膜，引起小水泡及點(diǎn)狀渾濁，還能使皮膚發(fā)炎，有時(shí)還能引起肺的病理改變，還可損害腎臟，引起血尿，但沒(méi)有致癌性。工作場(chǎng)所萘的容許濃度為１０×１０－６。生產(chǎn)設(shè)備及容器應(yīng)密閉，防止蒸氣粉末外逸，操作現(xiàn)場(chǎng)強(qiáng)制通風(fēng)。若發(fā)生中毒現(xiàn)象，要立即移至新鮮空氣處，多飲熱水，使之嘔吐，進(jìn)行人工呼吸，嚴(yán)重者送醫(yī)院治療。

2. Naphthalene has low water solubility and is not easily absorbed, so its toxicity is not very strong. Inhaling concentrated naphthalene vapor or naphthalene powder can cause vomiting, discomfort, and headaches. Especially damaging the cornea, causing small blisters and punctate turbidity, can also cause skin inflammation, and sometimes pathological changes in the lungs. It can also damage the kidneys and cause hematuria, but it is not carcinogenic. The allowable concentration of naphthalene in the workplace is 10 × 10-6. Production equipment and containers should be sealed to prevent the escape of steam powder, and the operation site should be forcibly ventilated. If poisoning occurs, immediately move to fresh air, drink plenty of hot water to induce vomiting, undergo artificial respiration, and in severe cases, seek medical treatment.

3.穩(wěn)定性 穩(wěn)定

3. Stability and stability

4.禁配物 強(qiáng)氧化劑（如鉻酸酐、氯酸鹽和高錳酸鉀等）

4. Prohibited strong oxidants (such as chromic anhydride, chlorate, and potassium permanganate)

5.聚合危害 不聚合

5. Aggregation hazards: non aggregation