說到順酐可能很多人不太清楚，聽起來有點陌生，今天氫氧化鉀生產廠的小編給你詳細介紹一下順酐的由來以及在哪里作用。

When it comes to maleic anhydride, many people may not know it, which sounds strange. Today, the editor of the potassium hydroxide factory will give you a detailed introduction to the origin and function of maleic anhydride.

順酐的由來

Origin of maleic anhydride

順酐全名為順丁烯二酸酐，又稱為馬來酸酐，是一種有強烈刺激氣味的無色結晶粉末，于1834年次由蘋果酸得到。早期，順丁烯二酸酐是通過苯的催化氧化制備，但為了降低生產成本，改用正丁烷氧化法制取。

The full name of maleic anhydride is maleic anhydride, also known as maleic anhydride. It is a colorless crystalline powder with a strong pungent smell. It was obtained from malic acid in 1834. In the early days, maleic anhydride was prepared by catalytic oxidation of benzene, but in order to reduce production cost, it was prepared by n-butane oxidation.

順酐由苯經催化氧化或由丁烯或丁烷用空氣氧化而制得，溶于乙醇、乙醚和丙酮，難溶于石油醚和四氯化碳，與熱水作用而成馬來酸；

Maleic anhydride is prepared by catalytic oxidation of benzene or oxidation of butene or butane with air. It is soluble in ethanol, ether and acetone, insoluble in petroleum ether and carbon tetrachloride, and reacts with hot water to form maleic acid;

順酐的外觀是白色片狀結晶，有粉末狀、針狀、片狀、丸狀、棒狀、團塊狀或熔融物質，相對密度是1.480，熔點在52.8℃，沸點是202.2℃，閃點：110.0℃。

The appearance of maleic anhydride is white flake crystal with powder, needle, flake, pill, rod, lump or molten substances. The relative density is 1.480, the melting point is 52.8 ℃, the boiling point is 202.2 ℃, and the flash point is 110.0 ℃.

順酐在哪里作用

Where does maleic anhydride act

順酐用于雙烯合成、制藥物、農藥、染料中間體及制聚酯樹脂、醇酸樹脂、馬來酸等有機酸，也用作脂肪和油防腐劑等，生產不飽和聚酯樹脂、醇酸樹脂、長效碘胺的原料。也是涂料、馬來松香、聚馬來酐、順酐-苯乙烯共聚物的共聚單體，也是生產油墨助劑、造紙助劑、增塑劑、酒石酸、富馬酸、四氫呋喃等的有機化工原料。

Maleic anhydride is used in diene synthesis, medicine, pesticide, dye intermediate, polyester resin, alkyd resin, maleic acid and other organic acids, as well as fat and oil preservatives, to produce unsaturated polyester resin, alkyd resin and long-acting iodamine. It is also a comonomer of coatings, maleic rosin, polymaleic anhydride, maleic anhydride styrene copolymer, and an organic chemical raw material for the production of ink additives, papermaking additives, plasticizers, tartaric acid, fumaric acid, tetrahydrofuran, etc.

急救措施

First aid measures

皮膚接觸：脫去污染的衣著，立即用水沖洗少15分鐘。若有灼傷，就醫(yī)。對少量皮膚接觸，避免將物質播散面積擴大。注意患者保暖并且保持安靜。吸入、食入或皮膚接觸該物質可引起遲發(fā)反應。確保醫(yī)務人員了解該物質相關的個體防護知識，注意自身防護。

Skin contact: Take off the contaminated clothes and immediately flush with water for at least 15 minutes. In case of burns, seek medical treatment. Contact a small amount of skin to avoid expanding the spread area of the substance. Keep the patient warm and quiet. Inhalation, ingestion or skin contact with the substance may cause delayed reactions. Ensure that medical personnel understand the personal protection knowledge related to this substance and pay attention to their own protection.

眼睛接觸：立即提起眼瞼，用流動清水或生理鹽水沖洗少15分鐘。就醫(yī)。

Eye contact: immediately lift the eyelids and wash them with flowing clean water or normal saline for at least 15 minutes. Get medical attention.

吸入：迅速脫離現場空氣新鮮處。保持呼吸道通暢。必要時進行人工呼吸。就醫(yī)。如果呼吸困難，給予吸氧。如果患者食入或吸入該物質不要用口對口進行人工呼吸，可用單向閥小型呼吸器或其他適當的醫(yī)療呼吸器。

Inhalation: quickly leave the site to a place with fresh air. Keep the respiratory tract unobstructed. Perform artificial respiration when necessary. Get medical attention. If breathing is difficult, give oxygen. If the patient ingests or inhales the substance, do not perform mouth to mouth artificial respiration, use a one-way valve small respirator or other appropriate medical respirators.

食入：立即漱口，給飲牛奶或蛋清。就醫(yī)。

Ingestion: Rinse your mouth immediately and drink milk or egg white. Get medical attention.

要將順酐儲存于陰涼、干燥、通風良好的庫房。遠離火種、熱源。保持容器密封。應與氧化劑、還原劑、酸類、食用化學品分開存放，切忌混儲。更多使用的事項就來我們網站http://www.yiqijieneng.cn咨詢吧！

Maleic anhydride shall be stored in a cool, dry and well ventilated warehouse. Keep away from kindling and heat source. Keep container sealed. It shall be stored separately from oxidants, reducing agents, acids and edible chemicals, and shall not be mixed. For more information, please visit our website http://www.yiqijieneng.cn Consult!