3、 Character: Colorless and glossy monoclinic crystal. Flammable. The odor is also quite volatile at room temperature and can sublimate. Melting point 80.29 ℃, boiling point 218 ℃, relative density 1.145 (20/4 ℃), 0.9625 (100/4 ℃), ignition point 86 ℃, self ignition point 526.11 ℃, refractive index 1.5898, flash point (open cup) 78.89 ℃. 1g of this product is soluble in 13ml of methanol or ethanol, 3.5ml of benzene or toluene, 2ml of carbon tetrachloride, and 1.2ml of carbon disulfide. Insoluble in water. It can also evaporate together with water vapor and belongs to Class 4 hazardous chemicals

四、包裝：50KG/復合編織袋裝

4、 Packaging: 50KG/composite woven bag

五、生產方法：1.由煤焦油分離，高溫煤焦油中萘約占8%-12%，將煤焦油蒸餾，切取煤油，經脫酚，脫喹啉，蒸餾得成品萘。2.由石油烴制得：催化重質重整油，催化裂化輕循環(huán)油，裂解制乙烯的副產焦油等。

5、 Production method: 1. By separating coal tar, naphthalene accounts for about 8% -12% in high-temperature coal tar. The coal tar is distilled, cut into kerosene, and subjected to dephenolization, quinoline removal, and distillation to obtain finished naphthalene. 2. Produced from petroleum hydrocarbons: catalytic heavy reforming oil, catalytic cracking light circulating oil, by-product tar from cracking to ethylene, etc.

產地：上海寶鋼

Origin: Shanghai Baosteel

六、貯運注意事項：儲存于陰涼、通風的庫房。遠離火種、熱源。庫溫不超過32℃，相對濕度不超過80％。包裝密封。應與氧化劑分開存放，切忌混儲。運輸途中應防曝曬、雨淋，防高溫。中途停留時應遠離火種、熱源。車輛運輸完畢應進行徹底清掃。

6、 Storage and transportation precautions: Store in a cool and ventilated warehouse. Keep away from sparks and heat sources. The temperature of the warehouse shall not exceed 32 ℃, and the relative humidity shall not exceed 80%. Packaging sealing. It should be stored separately from oxidants and should not be mixed for storage. During transportation, it is necessary to prevent exposure to sunlight, rain, and high temperatures. During a stopover, stay away from sparks and heat sources. The vehicle should be thoroughly cleaned after transportation.

七、用途：萘是工業(yè)上重要的稠環(huán)烴，主要用于生產苯酐；各種萘酚；萘胺等，是生產合成樹脂；增塑劑；染料的中間體；表面活性劑；合成纖維；涂料；農藥；醫(yī)藥；香料；橡膠助劑和殺蟲劑的原料。。

7、 Usage: Naphthalene is an important industrial polycyclic hydrocarbon, mainly used for the production of phthalic anhydride; Various naphthols; Naphthylamine and other synthetic resins are produced; Plasticizers; Intermediate of dyes; Surfactants; Synthetic fibers; Coatings; Pesticides; Medicine; Spices; Raw materials for rubber additives and insecticides..