精萘又名萘（精），白色易挥发晶体，有温和芳香气味，粗萘有煤焦油臭味，闪点80℃，熔点80.1℃沸点217.9℃，不溶于水，溶于无水乙醇、醚、苯，密度比水重，性质稳定，主要用于合成邻苯二甲酸酐等。

Refined naphthalene, also known as naphthalene (refined), is a white volatile crystal with a mild aromatic smell, while crude naphthalene has a smell of coal tar, with a flash point of 80 ℃, a melting point of 80.1 ℃, a boiling point of 217.9 ℃, insoluble in water, soluble in anhydrous ethanol, ether, and benzene, with a density heavier than water, and stable properties. It is mainly used to synthesize phthalic anhydride, etc.

精萘是工业上重要的稠环芳烃，可用于生产苯酐、染料的中间体、橡胶助剂和杀虫剂。精萘可用染料，医药等领域，如生产2-萘酚、1-萘酚和甲萘胺等，也是生产樟脑的主要原料。以往的卫生球就是用萘制成的，但由于萘的毒性，现在卫生球已经禁止使用萘作为成分。

Refined naphthalene is an important polycyclic aromatic hydrocarbon in industry, which can be used to produce phthalic anhydride, intermediate of dyes, rubber auxiliaries and pesticides. Refined naphthalene can be used in dye, medicine and other fields, such as the production of 2-naphthol, 1-naphthol and methylnaphthylamine, and is also the main raw material for the production of camphor. In the past, sanitary balls were made of naphthalene, but due to the toxicity of naphthalene, naphthalene has been banned as a component in sanitary balls.

产品性能：

Product performance:

1、灰白色粉状或片状结晶，有特殊气味，易升华。不溶于水，溶于无水乙醇，稳定性，稳定；危险标记：8（易燃固体）对皮肤有刺激性。

1. Grayish white powder or flake crystal, with special smell, easy to sublimate. Insoluble in water, soluble in anhydrous ethanol, stable and stable; Hazard sign: 8 (flammable solid) is irritating to skin.

2、比重：1.162；熔点：80.℃；沸点：217.9℃；闪点：（开杯）78.89℃；燃点：86℃；自然点：526.11℃；相对密度：1.145（20/4℃）,0.9625(100/4℃)，折射率：1.5898

2. Specific gravity: 1.162; Melting point: 80. ℃; Boiling point: 217.9 ℃; Flash point: (open cup) 78.89 ℃; Ignition point: 86 ℃; Natural point: 526.11 ℃; Relative density: 1.145 (20/4 ℃), 0.9625 (100/4 ℃), refractive index: 1.5898

3、易燃烧，由于含碳量高，燃烧时火焰光弱而烟大。

3. It is easy to burn. Because of its high carbon content, the flame is weak and smokey when burning.

4、熔点较低，数低熔点固体物质。常温下呈固态，受热熔化。应远离热源。

4. Low melting point, a few solid substances with low melting point. It is solid at normal temperature and melts when heated. Keep away from heat sources.

5、易与氧化剂和混酸物质发生反应。不得与食品原料、氧化剂、酸类物质混装、混放。

5. It is easy to react with oxidants and mixed acids. It shall not be mixed with food raw materials, oxidants and acids.

6、1g精萘可溶于13ml甲醇或乙醇，3.5ml苯或甲苯，2ml氯仿或四氯化碳，1.2ml二硫化碳。不溶于水。精萘亦能和水蒸气一同挥发。与空气形成爆炸混合物、爆炸极限0.9%-5.9%（体积）。

6. 1g of refined naphthalene can be dissolved in 13ml of methanol or ethanol, 3.5ml of benzene or toluene, 2ml of chloroform or carbon tetrachloride, and 1.2ml of carbon disulfide. Insoluble in water. Refined naphthalene can also volatilize with water vapor. It forms explosive mixture with air, with explosion limit of 0.9% - 5.9% (volume).

精萘厂家提醒您，精萘属于4.1类危险品即是易燃固体，应密封贮存在阴凉处。对于此类货物，公司通过以下方式进行管控：一是入场前认真检查货物包装，确保无泄漏才允许入场；二是严格控制火源，确保场区内消除一切火源；三是加强巡检，时刻关注货物状态，确保无泄漏现象；四是利用先进的红外测温系统对货物进行温度监控。

The refined naphthalene manufacturer reminds you that refined naphthalene belongs to Class 4.1 dangerous goods, that is, flammable solid, and should be sealed and stored in a cool place. For such goods, the company controls them in the following ways: First, carefully check the packaging of goods before entering the site to ensure that there is no leakage before entering the site; Second, strictly control the fire source to ensure that all fire sources are eliminated in the site; Third, strengthen patrol inspection, pay attention to the status of goods at all times, and ensure no leakage; Fourth, use the advanced infrared temperature measurement system to monitor the temperature of goods.

即使精萘在场地发生货物泄漏也不必惊慌，值班安全员在场地巡检时发现疑似泄漏情况会立即报给控制中心，之后穿戴轻型防化服抵近侦查，确认泄漏情况后，调度员会安排正面吊将该集装箱搬移至应急处理区，启动现场处置方案，一旦内部有异常高温，会启用应急喷枪进行持续降温，待消防队赶来后，与消防队配合灭火，根据精萘的理化性质，优选干粉或二氧化碳灭火。通过以上措施的实施，可以确保该货物安全可控。还有怎样的问题就来我们网站http://www.jnjdbc.cn咨询吧！

Even if refined naphthalene leaks at the site, there is no need to panic. The safety officer on duty will immediately report the suspected leakage to the control center when patrolling the site, and then wear light chemical protective clothing to approach for investigation. After confirming the leakage, the dispatcher will arrange a front crane to move the container to the emergency treatment area, and start the on-site treatment plan. Once there is abnormal high temperature inside, the emergency spray gun will be used for continuous cooling. When the fire brigade arrives, Cooperate with the fire brigade to extinguish the fire. According to the physical and chemical properties of refined naphthalene, dry powder or carbon dioxide is preferred. The implementation of the above measures can ensure that the goods are safe and controllable. If you have any questions, please come to our website http://www.jnjdbc.cn Ask!