順酐，又稱順丁烯二酸酐，馬來酸酐，2,5-呋喃二酮等。斜方晶系無色針狀或片狀晶體。有強烈刺激氣味，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。主要用于不飽和聚酯樹脂、醇酸樹脂、農藥馬拉硫磷、高能效低毒農藥4049、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, also known as maleic anhydride, maleic anhydride, 2,5-furanedione, etc. Orthorhombic crystals are colorless needle-shaped or flaky crystals. It has a strong pungent smell and is soluble in ethanol, ether and acetone, but insoluble in petroleum ether and carbon tetrachloride. It reacts with hot water to form maleic acid. It is mainly used to produce unsaturated polyester resin, alkyd resin, pesticide malathion, high-energy and low-toxicity pesticide 4049, and long-acting iodamine. It is also a comonomer of paint, maleic rosin, polymaleic anhydride, maleic anhydride-styrene copolymer, and an organic chemical raw material for the production of ink additives, paper additives, plasticizers, tartaric acid, fumaric acid, tetrahydrofuran, etc.
順酐的應用范圍
Application range of maleic anhydride
順酐主要應用于玻璃鋼行業的原料不飽和聚酯樹脂（UPR）；加氫類產品中的1，4-丁二醇（BDO）、四氫呋喃（THF）和γ-丁內酯（GBL）；也應用于涂料、潤滑油添加劑、農藥、酒石酸、琥珀酸及酐、四氫苯酐、改性松香等方面。
Maleic anhydride is mainly used in unsaturated polyester resin (UPR), the raw material of glass fiber reinforced plastics industry; 1,4-Butanediol (BDO), tetrahydrofuran (THF) and γ- Butyrolactone (GBL); It is also used in coatings, lubricant additives, pesticides, tartaric acid, succinic acid and anhydride, tetrahydrophthalic anhydride, modified rosin, etc.
不飽和聚酯樹脂（UPR）：是熱固型樹脂的主要品種之一，由于其優良的機械性能、電性能和耐化學腐蝕性能，且加工工藝簡便，因此應用廣泛。目前可以經營400余個牌號的UPR，主要品種包括鄰苯型、間苯型、對苯型、雙酚A型等，按用途和功能分類包括通用樹脂、耐化學品樹脂、阻燃樹脂、澆注樹脂、柔性樹脂、人造大理石、BMC與DMC樹脂、裝飾類樹脂和特種樹脂等。的UPR市場中，增強類（玻璃鋼用）樹脂比例只占40％，而用于非增強類樹脂的比例高達60％，在非增強類樹脂中工藝樹脂占34％，紐扣樹脂占24％，人造大理石占19％。
Unsaturated polyester resin (UPR): It is one of the main varieties of thermosetting resin. It is widely used because of its excellent mechanical properties, electrical properties, chemical corrosion resistance, and simple processing technology. At present, more than 400 brands of UPR can be operated in China. The main varieties include o-benzene, m-benzene, p-benzene, bisphenol A, etc. According to the purpose and function, UPR includes general resin, chemical resistant resin, flame retardant resin, casting resin, flexible resin, artificial marble, BMC and DMC resin, decorative resin and special resin. In China's UPR market, the proportion of reinforced resin (for FRP) accounts for only 40%, while the proportion of non-reinforced resin is as high as 60%. In the non-reinforced resin, process resin accounts for 34%, button resin accounts for 24%, and artificial marble accounts for 19%.
順酐的注意事項
Precautions for maleic anhydride
泄漏應急處理
Leakage emergency treatment
順酐廠家認為應該隔離泄漏污染區，周圍設警告標志，建議應急處理人員戴好防毒面具，穿化學防護服。不要直接接觸泄漏物，用潔凈的鏟子收集于干燥潔凈有蓋的容器中，運廢物處理場所。如大量泄漏，收集回收或無害處理后廢棄。
The maleic anhydride manufacturer believes that the leakage pollution area should be isolated and warning signs should be set around it. It is recommended that emergency treatment personnel wear gas masks and chemical protective clothing. Do not contact the leakage directly. Collect it in a dry, clean and covered container with a clean shovel and transport it to the waste disposal site. If there is a large amount of leakage, it shall be collected and recycled or discarded after harmless treatment.
防護措施
Protective measures
呼吸系統防護：空氣中濃度超標時，應該佩帶防毒口罩。
Respiratory protection: When the concentration in the air exceeds the standard, you should wear a gas mask.
眼睛防護：戴防護眼鏡。
Eye protection: wear safety glasses.
防護服：穿工作服(防腐材料制作)。
Protective clothing: wear work clothes (made of anti-corrosion materials).
手防護：戴橡皮手套。
Hand protection: wear rubber gloves.
其它：工作后，淋浴更衣。注意個人清潔衛生。
Others: shower and change clothes after work. Pay attention to personal hygiene.
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。
Skin contact: take off contaminated clothes and wash with water immediately for at least 15 minutes. If you have burns, seek medical treatment.
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。
Eye contact: immediately lift the eyelids and wash with flowing water or physiological 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。
Inhalation: quickly leave the site to fresh air. Keep respiratory tract unobstructed. Perform artificial respiration if necessary. Get medical attention.
食入：誤服者立即漱口，給飲牛奶或蛋清。就醫。
Ingestion: Rinse mouth immediately and drink milk or egg white. Get medical attention.
The scope of application of maleic anhydride and relevant preventive measures will be explained here. If you have any doubts or needs about this, please come to our website http://pojtizxl.cn Consult!
