精萘的保质期并非固定不变的数值，而是受到储存条件、包装状况等因素的综合影响，其稳定性与环境密切相关，了解这些影响因素有助于更好地把握精萘的有效使用期限。

　　The shelf life of refined naphthalene is not a fixed value, but is influenced by storage conditions, packaging conditions, and other factors. Its stability is closely related to the environment. Understanding these influencing factors can help better grasp the effective use period of refined naphthalene. 

　　精萘本身是一种易挥发的有机化合物，具有特殊气味，在常温下为白色晶体。其化学性质相对稳定，但长期暴露在不适宜的环境中，可能会发生质量变化。通常情况下，在严格遵循储存规范的前提下，精萘的保质期可维持在 12 至 24 个月左右，但若储存条件不佳，保质期会大幅缩短。

　　Naphthalene itself is a volatile organic compound with a special odor, appearing as white crystals at room temperature. Its chemical properties are relatively stable, but long-term exposure to unsuitable environments may result in quality changes. Normally, under strict adherence to storage regulations, the shelf life of refined naphthalene can be maintained at around 12 to 24 months, but if storage conditions are poor, the shelf life will be significantly shortened. 

　　储存环境的温度是影响保质期的关键因素。精萘的熔点较低，当环境温度过高时，容易发生熔化、结块现象，不仅影响其物理形态，还可能因挥发加快导致成分损失。因此，储存时需将环境温度控制在 30℃以下，避免阳光直射和靠近热源，如暖气、炉灶等，最好选择阴凉、通风的仓库，通过温控措施保持稳定的低温环境，以减缓其挥发和变质速度。

　　The temperature of the storage environment is a key factor affecting the shelf life. The melting point of refined naphthalene is relatively low. When the ambient temperature is too high, it is prone to melting and clumping, which not only affects its physical form but may also cause component loss due to accelerated volatilization. Therefore, when storing, the ambient temperature should be controlled below 30 ℃, avoiding direct sunlight and proximity to heat sources such as heaters and stoves. It is best to choose a cool and ventilated warehouse, and maintain a stable low-temperature environment through temperature control measures to slow down its volatilization and deterioration rate. 

　　包装的密封性对保质期至关重要。精萘具有挥发性，若包装破损或密封不严，其成分会逐渐挥发到空气中，导致纯度下降，同时可能吸收空气中的水分和杂质，影响其使用性能。常见的包装形式为密封的铁桶或塑料袋，储存过程中需定期检查包装是否完好，有无破损、泄漏等情况，一旦发现包装问题，应及时更换密封容器，防止进一步变质。

　　The sealing of packaging is crucial for its shelf life. Naphthalene is volatile. If the packaging is damaged or poorly sealed, its components will gradually evaporate into the air, resulting in a decrease in purity. At the same time, it may absorb moisture and impurities from the air, affecting its performance. The common packaging form is sealed iron drums or plastic bags. During storage, it is necessary to regularly check whether the packaging is intact, whether there is damage, leakage, etc. Once packaging problems are found, the sealed container should be replaced in a timely manner to prevent further deterioration. 

　　空气湿度也是不可忽视的因素。精萘虽不易溶于水，但在高湿度环境中，容易吸收空气中的水分，导致晶体表面潮解，出现结块或纯度降低的现象。因此，储存环境的相对湿度应控制在 50% 至 70% 之间，避免在潮湿的地下室或露天场地存放，可通过放置干燥剂等方式降低局部环境湿度，保持精萘的干燥状态。

　　Air humidity is also an undeniable factor. Although refined naphthalene is not easily soluble in water, it is prone to absorbing moisture from the air in high humidity environments, leading to surface deliquescence of crystals, agglomeration, or decreased purity. Therefore, the relative humidity of the storage environment should be controlled between 50% and 70%, avoiding storage in damp basements or open spaces. Local environmental humidity can be reduced by placing desiccants or other methods to maintain the dry state of refined naphthalene. 

　　此外，与其他物质的接触也可能影响精萘的保质期。精萘应单独存放，避免与强氧化剂、强酸、强碱等化学物质混放，防止发生化学反应导致变质。同时，要远离食品、药品等物品，避免其挥发物对这些物品造成污染。

　　In addition, contact with other substances may also affect the shelf life of refined naphthalene. Naphthalene should be stored separately to avoid mixing with strong oxidants, strong acids, strong bases, and other chemical substances to prevent chemical reactions from causing deterioration. At the same time, it is necessary to stay away from food, drugs, and other items to avoid contamination caused by their volatile substances. 

　　在实际使用中，判断精萘是否超出保质期，除了参考储存时间，还需观察其外观和性状。若发现精萘出现明显变色（如变黄、变灰）、结块严重、气味异常等情况，即使未到预计保质期，也应视为已变质，不可继续使用，以免影响使用效果或产生安全隐患。

　　In practical use, to determine whether refined naphthalene has exceeded its shelf life, in addition to referring to the storage time, it is also necessary to observe its appearance and properties. If obvious discoloration (such as yellowing or graying), severe agglomeration, abnormal odor, etc. are found in the refined naphthalene, even if it has not reached the expected shelf life, it should be considered as spoiled and cannot be continued to be used to avoid affecting the effectiveness of use or causing safety hazards.

　　本文由精萘厂家友情奉献.更多有关的知识请点击:http://www.jnjdbc.cn我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言.

　　This article is a friendly contribution from the manufacturer of refined naphthalene For more information, please click: http://www.jnjdbc.cn We will provide detailed answers to your questions. You are welcome to log in to our website and leave a me