Our company produces refined naphthalene, which has been tested according to national standards and has a crystallization point of 76, but the color is red (we use imported industrial naphthalene with a crystallization point of 73-7). May I ask which expert can help solve this problem.

萘，又称并萘，是一种无色有光泽的片状晶体。 不溶物水，易升华，能随水蒸气蒸发，有特别味道。 精萘是工业上最举足轻重的稠环芳烃，可用于生产染料的中间体橡胶助剂和杀虫剂。

Naphthalene, also known as naphthalene, is a colorless and glossy sheet-like crystal. Insoluble water, easily sublimated, can evaporate with water vapor, and has a special taste. Refined naphthalene is the most important polycyclic aromatic hydrocarbon in industry, which can be used as an intermediate in the production of dyes, rubber additives, and insecticides.

精子是什么颜色的在正常情况下，如果是定期排精的男性，精液应当是乳白色的;如果比较长的时间没有排精，精液的颜色会呈淡黄色;如果精液的颜色发红，可能精液内有血;如果精液的颜色很黄，很稠，则可能是有脓细胞了。正常的精液呈乳白色或淡黄色。

What color is the sperm? Under normal circumstances, if it is a male who regularly ejaculates, the semen should be milky white; If there is no ejaculation for a relatively long time, the color of the semen will be light yellow; If the color of semen turns red, there may be blood in the semen; If the color of the semen is very yellow and thick, there may be pus cells. Normal semen is milky white or light yellow.

一个男人正常的精液是淡黄或者乳白色，精液的颜色提示生殖系统是否健康，有些男性发现自己精液是黄色的很是担忧害怕，又很疑惑，哪些原因会导致精液变黄，男人精液发黄大多跟这些原因有关。

A man's normal semen is light yellow or milky white, and the color of the semen indicates whether the reproductive system is healthy. Some men are worried, afraid, and confused about what causes their semen to turn yellow. Most men's semen turning yellow is related to these reasons.

"精液颜色什么样正常精液的颜色一般多为乳白色或淡黄色，但如果患者长期没有同房，没有射精，精液的颜色可以偏黄色。如果是过频的射精，精液的颜色又可以是淡白色，所以要根据实际情况来判定精液颜色是不是正常。

What is the color of semen? The normal color of semen is usually milky white or light yellow, but if the patient has not had sexual intercourse for a long time and has not ejaculated, the color of semen can turn yellow. If the ejaculation is too frequent, the color of semen can also be light white, so it is necessary to determine whether the semen color is normal based on the actual situation.

健康的精液颜色可以是乳白色灰白色或者淡黄色黄色。精液的颜色变化其实与禁欲时间有关，有些男性比较频繁，精液颜色可能偏乳白呈水样。如果男性比较少，长时间没有排精，精液的颜色会偏黄，呈果冻状或者颗粒状。

A healthy semen color can be milky white, gray white, or light yellow. The color change of semen is actually related to abstinence time, and some men are more frequent, and the semen color may be milky white and watery. If there are relatively few males who have not ejaculated for a long time, the color of the semen will be yellowish, jelly like or granular.

萘由两个苯环构成的最简单的稠环芳香烃，俗称“卫生球”。是煤焦油加工的主要产品之一。萘在工业上以粗萘(工业萘和压榨萘)和精萘等产品形式出现。萘的分子式为C10H8，分子量为1217。

Naphthalene is the simplest condensed aromatic hydrocarbon composed of two benzene rings, commonly known as the "sanitary sphere". It is one of the main products in coal tar processing. Naphthalene appears in industry in the form of crude naphthalene (industrial naphthalene and pressed naphthalene) and refined naphthalene. The molecular formula of naphthalene is C10H8, with a molecular weight of 1217.

本文由精萘厂家友情奉献.更多有关的知识点击:http://www.jnjdbc.cn我们将用真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

This article is a friendly contribution from a refined naphthalene manufacturer. For more relevant knowledge, click on: http://www.jnjdbc.cn We will provide you with comprehensive services with a sincere attitude. We will gradually contribute more relevant knowledge to everyone. Stay tuned