精萘又名萘（精），白色易揮發(fā)晶體，有溫和芳香氣味，粗萘有煤焦油臭味，閃點80℃，熔點80.1℃沸點217.9℃，不溶于水，溶于無水乙醇、醚、苯，密度比水重，性質穩(wěn)定，主要用于合成鄰苯二甲酸酐等。

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.

精萘是工業(yè)上重要的稠環(huán)芳烴，可用于生產(chǎn)苯酐、染料的中間體、橡膠助劑和殺蟲劑。精萘可用染料，醫(yī)藥等領域，如生產(chǎn)2-萘酚、1-萘酚和甲萘胺等，也是生產(chǎn)樟腦的主要原料。以往的衛(wèi)生球就是用萘制成的，但由于萘的毒性，現(xiàn)在衛(wèi)生球已經(jīng)禁止使用萘作為成分。

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.

產(chǎn)品性能：

Product performance:

1、灰白色粉狀或片狀結晶，有特殊氣味，易升華。不溶于水，溶于無水乙醇，穩(wěn)定性，穩(wěn)定；危險標記：8（易燃固體）對皮膚有刺激性。

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；熔點：80.℃；沸點：217.9℃；閃點：（開杯）78.89℃；燃點：86℃；自然點：526.11℃；相對密度：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、易燃燒，由于含碳量高，燃燒時火焰光弱而煙大。

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

4、熔點較低，數(shù)低熔點固體物質。常溫下呈固態(tài)，受熱熔化。應遠離熱源。

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、易與氧化劑和混酸物質發(fā)生反應。不得與食品原料、氧化劑、酸類物質混裝、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。精萘亦能和水蒸氣一同揮發(fā)。與空氣形成爆炸混合物、爆炸極限0.9%-5.9%（體積）。

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).

精萘廠家提醒您，精萘屬于4.1類危險品即是易燃固體，應密封貯存在陰涼處。對于此類貨物，公司通過以下方式進行管控：一是入場前認真檢查貨物包裝，確保無泄漏才允許入場；二是嚴格控制火源，確保場區(qū)內消除一切火源；三是加強巡檢，時刻關注貨物狀態(tài)，確保無泄漏現(xiàn)象；四是利用先進的紅外測溫系統(tǒng)對貨物進行溫度監(jiān)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.

即使精萘在場地發(fā)生貨物泄漏也不必驚慌，值班安全員在場地巡檢時發(fā)現(xiàn)疑似泄漏情況會立即報給控制中心，之后穿戴輕型防化服抵近偵查，確認泄漏情況后，調度員會安排正面吊將該集裝箱搬移至應急處理區(qū)，啟動現(xiàn)場處置方案，一旦內部有異常高溫，會啟用應急噴槍進行持續(xù)降溫，待消防隊趕來后，與消防隊配合滅火，根據(jù)精萘的理化性質，優(yōu)選干粉或二氧化碳滅火。通過以上措施的實施，可以確保該貨物安全可控。還有怎樣的問題就來我們網(wǎng)站http://m.2cgg.com咨詢吧！

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://m.2cgg.com Ask!