新戊二醇（NPG），白色結(jié)晶固體，無味，吸濕。主要用于生產(chǎn)不飽和樹脂，無油醇酸樹脂，聚氨酯泡沫塑料和增塑劑，表面活性劑，絕緣材料，印刷油墨，阻聚劑，合成航空潤滑油添加劑等；同時，新戊二醇也是一種好的溶劑，可用于芳香烴和環(huán)烷基烴的選擇性分離。氨基烤漆具有良好的保光性，不會發(fā)黃；它也可以用作生產(chǎn)穩(wěn)定劑和殺蟲劑的原料。

Neopentyl glycol (NPG), white crystalline solid, odorless, hygroscopic. It is mainly used to produce unsaturated resin, oil-free alkyd resin, polyurethane foam and plasticizer, surfactant, insulating materials, printing ink, polymerization inhibitor, synthetic aviation lubricant additives, etc; At the same time, neopentyl glycol is also a good solvent, which can be used for the selective separation of aromatic hydrocarbons and naphthenic hydrocarbons. Amino baking varnish has good light retention and will not turn yellow; It can also be used as a raw material for the production of stabilizers and pesticides.

新戊二醇合成法：

Synthesis of neopentyl glycol:

1.甲酸鈉法將異丁醛和甲醛在30-35℃，pH值為9-11的條件下在堿性催化劑存在下縮合形成羥基-叔丁醛和過量的甲醛。被氧化并與堿反應(yīng)形成甲酸鈉。用甲酸中和反應(yīng)溶液，并在減壓下蒸餾和脫水。將濃縮的溶液進(jìn)行分層萃取以去除甲酸鈉，然后冷卻，結(jié)晶并分離以獲得終產(chǎn)物。

1. Sodium formate method condenses isobutyraldehyde and formaldehyde at 30-35 ℃ and pH value 9-11 in the presence of basic catalyst to form hydroxy-tert-butyraldehyde and excess formaldehyde. It is oxidized and reacts with alkali to form sodium formate. Neutralize the reaction solution with formic acid, and distill and dehydrate under reduced pressure. The concentrated solution is extracted in layers to remove sodium formate, then cooled, crystallized and separated to obtain the final product.

2.加氫方法：將異丁醛和甲醛縮合，得到羥基新戊醛，其通過加氫還原而獲得。

2. Hydrogenation method: condensation of isobutyraldehyde and formaldehyde to obtain hydroxyneovaleraldehyde, which is obtained by hydrogenation reduction.

新戊二醇注意事項(xiàng)：

Precautions for neopentyl glycol:

1.存放期間保持包裝完好。應(yīng)與氧化劑和食用化學(xué)品分開存放。使用防爆照明和通風(fēng)設(shè)施。禁止使用易產(chǎn)生火花的機(jī)械和工具。儲存區(qū)域應(yīng)配備泄漏應(yīng)急處理設(shè)備和合適的容納材料。請勿將其暴露于明火中。應(yīng)保持通風(fēng)干燥，以防日曬。儲存溫度為-50℃45℃。

1. Keep the packaging intact during storage. It should be stored separately from oxidants and edible chemicals. Use explosion-proof lighting and ventilation facilities. It is forbidden to use machinery and tools that are easy to produce sparks. The storage area shall be equipped with leakage emergency treatment equipment and suitable accommodation materials. Do not expose it to open fire. Keep ventilated and dry to prevent the sun. The storage temperature is - 50 ℃ and 45 ℃.

2.在運(yùn)行過程中，要進(jìn)行密閉操作以增強(qiáng)通風(fēng)。

2. During operation, airtight operation shall be carried out to enhance ventilation.

操作員戴上化學(xué)防護(hù)眼鏡，穿上防毒滲透工作服，并戴上橡膠耐油手套。在工作場所遠(yuǎn)離火源，熱源和吸煙。使用防爆通風(fēng)系統(tǒng)和設(shè)備。防止蒸氣泄漏到工作場所的空氣中。避免與氧化劑接觸。包裝時，注意防止靜電積聚，并有接地裝置。處理時請小心處理，以免損壞包裝。配備了相應(yīng)品種和數(shù)量的消防設(shè)備和泄漏應(yīng)急處理設(shè)備。更多相關(guān)事項(xiàng)就來我們網(wǎng)站http://www.fahao168.com咨詢吧！

The operator shall wear chemical safety goggles, anti-gas penetration work clothes and rubber oil-resistant gloves. Keep away from fire, heat and smoking in the workplace. Use explosion-proof ventilation system and equipment. Prevent steam from leaking into the air of the workplace. Avoid contact with oxidants. When packaging, pay attention to prevent the accumulation of static electricity, and have a grounding device. Please handle with care to avoid damaging the package. It is equipped with fire fighting equipment and leakage emergency treatment equipment of corresponding variety and quantity. Come to our website for more relevant matters http://www.fahao168.com Ask!