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順酐的特性

Characteristics of Maleic Anhydride

物理性質(zhì)：順酐是一種有強(qiáng)烈刺激氣味的無色結(jié)晶粉末，室溫下為白色晶體。其密度為1.484g/cm3，熔點(diǎn)為51-56℃，沸點(diǎn)為202℃，閃點(diǎn)為103.3℃。

Physical properties: Maleic anhydride is a colorless crystalline powder with a strong pungent odor, and is a white crystal at room temperature. Its density is 1.484g/cm 3, melting point is 51-56 ℃, boiling point is 202 ℃, and flash point is 103.3 ℃.

化學(xué)性質(zhì)：順酐可溶于乙醇、乙醚和丙酮，但難溶于石油醚和四氯化碳。它可以與熱水作用形成馬來酸。

Chemical properties: Maleic anhydride is soluble in ethanol, ether, and acetone, but insoluble in petroleum ether and carbon tetrachloride. It can react with hot water to form maleic acid.

順酐的用途

The use of maleic anhydride

化學(xué)工業(yè)：

Chemical Industry:

聚酯樹脂：順酐是不飽和聚酯樹脂和醇酸樹脂的重要原料。

Production of polyester resin: Maleic anhydride is an important raw material for producing unsaturated polyester resin and alkyd resin.

有機(jī)合成：在有機(jī)合成中，順酐可用于制造丁二酸、丁二酸酐等化合物。

Organic synthesis: In organic synthesis, maleic anhydride can be used to manufacture compounds such as succinic acid and succinic anhydride.

醫(yī)藥工業(yè)：

Pharmaceutical industry:

順酐用于制造長效磺胺等藥物，以及其他各種醫(yī)藥中間體。

Maleic anhydride is used to manufacture long-acting sulfonamide and other pharmaceutical intermediates.

農(nóng)藥工業(yè)：

Pesticide industry:

作為農(nóng)藥馬拉硫磷、低毒農(nóng)藥4049、長效碘胺等的原料。

As a raw material for pesticides such as malathion, efficient and low toxicity pesticide 4049, and long-acting iodamine.

染料和涂料工業(yè)：

Dyes and Coatings Industry:

順酐用于制造染料中間體，以及涂料、油墨助劑。

Maleic anhydride is used to manufacture dye intermediates, as well as coatings and ink additives.

其他應(yīng)用：

Other applications:

順酐還可用作脂肪和油的防腐劑。

Maleic anhydride can also be used as a preservative for fats and oils.

在食品工業(yè)中，順酐用于制造酸味劑蘋果酸及酒石酸等。

In the food industry, maleic anhydride is used to manufacture acidic agents such as malic acid and tartaric acid.

作為環(huán)氧樹脂的固化劑。

As a curing agent for epoxy resin.

注意事項(xiàng)

matters needing attention

由于順酐屬于八類危險品，其具有強(qiáng)烈的刺激性氣味，因此在處理和儲存時需要特別小心。

Due to the fact that maleic anhydride belongs to Class 8 hazardous materials and has a strong irritating odor, special care is required during handling and storage.

在處理順酐時，應(yīng)采取適當(dāng)?shù)姆雷o(hù)措施，如戴防毒口罩、穿化學(xué)防護(hù)服等。

When handling maleic anhydride, appropriate protective measures should be taken, such as wearing gas masks and chemical protective clothing.

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