Overview
Dianhydride is a critical chemical intermediate primarily used in the synthesis of polyimides, which are high-performance polymers known for their exceptional thermal and mechanical properties. It is widely utilized in industries requiring materials that can withstand extreme conditions, such as aerospace, electronics, and automotive sectors. The compound is characterized by its rigid molecular structure, which contributes to the high thermal stability and mechanical strength of the resulting polymers. Its ability to form stable, heat-resistant films makes it indispensable in advanced technological applications.
Physical and Chemical Properties
Dianhydride typically appears as a white to off-white crystalline powder with a molecular weight of 294.22 g/mol. It has a density of approximately 1.5 g/cm³ and a melting point ranging between 300-350°C. The compound decomposes before reaching its boiling point, making it unsuitable for applications requiring liquid-phase processing. Dianhydride is soluble in polar aprotic solvents such as N-methyl-2-pyrrolidone (NMP) and dimethylformamide (DMF). Its low dielectric constant and high thermal stability make it ideal for use in electronic components and insulating materials.
Main Applications
The primary application of dianhydride is in the production of polyimides, which are used in flexible printed circuits, insulating films, and high-temperature adhesives. These materials are essential in the electronics industry for manufacturing components like flexible displays, semiconductors, and multilayer circuit boards. In the aerospace sector, dianhydride-based polymers are used for lightweight, heat-resistant coatings and composites. The automotive industry also benefits from these materials in the production of durable, high-performance parts that can withstand extreme temperatures and mechanical stress.
Safety and Storage
Dianhydride should be handled with care to avoid inhalation or skin contact. Personal protective equipment (PPE), including gloves and safety goggles, is recommended when working with this compound. It should be used in well-ventilated areas to minimize exposure to dust. Storage conditions are critical to maintaining the compound's stability. Dianhydride should be kept in a cool, dry place, away from moisture and direct sunlight. Proper sealing of containers is essential to prevent degradation and ensure long-term usability.
B2B Procurement Guide
When procuring dianhydride, buyers should prioritize suppliers with a proven track record of delivering high-purity products. Consistency in batch quality is crucial for industrial applications, so requesting certificates of analysis (CoA) is recommended. Price ranges can vary significantly based on purity and supplier, with typical costs between $50 and $200 per kilogram. Buyers should also consider logistical factors, such as shipping conditions and lead times, to ensure a reliable supply chain for their production needs.
Related Manufacturers
- 主营：四氢噻吩、乙硫醇、单氰胺、二甲基二硫醚、3-甲硫基丙醛、四氢吡咯、邻氯苯腈、噻吩、盐酸羟胺、硬脂酸锌、异丙胺、氯乙酸、氟硼酸
- 主营：聚苯胺、脯氨酸甲酯盐酸盐、苄基三甲基氯化铵
- 主营：聚丙烯酰胺、聚合氯化铝、片碱、乙二醇、纯碱、硫酸亚铁、磷酸、元明粉、工业盐、次氯酸钠
- 主营：全氟三丁胺、全氟三乙胺、全氟三丙胺、全氟聚醚、全氟萘烷、全氟己酮、羟基磷灰石、生物活性玻璃、布洛芬、溴壬烷、磷酸铵、甲乙基、褪黑素、嘧啶钠、莪术油、显色剂、叔丁醇、茜素红、乙氧基、异戊醇、脯氨酸、茚三酮、氯唑沙
- 主营：三氟乙酸、三异丙基硅烷、三甲基氯硅烷、甲基叔丁基醚、N-二异丙基乙胺、2-乙二硫醇、四甲基乙二胺、二乙二醇二甲醚、6-二甲基吡啶、N-甲基吗啉、吩噻嗪、吗啉、2-甲基四氢呋喃、DBU、3-巯基丙酸、五氯化钽、3-甲基吡啶、三苯基膦、三丁基膦、1-萘乙酮、3-丁炔-2-醇、氯戊烷
- 主营：2-乙烯基吡啶、氯甲酸苄酯、十八硫醇、4-二甲氨基吡啶、3-环戊二烯、六甲基氧二硅烷、叔丁胺、六氟磷酸铵、六氟磷酸
- 主营：异丙醚、二甲基二氯硅烷、2-巯基苯并咪唑
- 主营：甲氨基、防老剂、共聚物、二聚体、二氨基、edta二钠、乙交酯、聚乳酸、三氨基、苯乙酮、磺丙基、丙烯酸、羟甲基、胡椒酸、羟乙基、防黄剂、氯甲基、2349-67-9、82692-96-4、37052-78-1、2苯并异、4-三羧酸、6-氯烟酸、l-丙交酯、l-胱氨酸
- 主营：杀菌剂、220140-29-4、葫芦[5]脲、氯化偏苯三酸酐、二苯基甘脲、印染助剂、葫芦[8]脲、葫芦脲水合物、草酰氯单甲酯、生物医药葫芦脲、四甲氧甲基甘脲、均苯四甲酸
- 主营：聚乙烯亚胺、三硫代碳酸钠40%、TS-1钛硅分子筛、三甘醇二异辛酸酯3G8、六氯环三磷腈、5-甲基靛红、烷基苯磺酸酯、苯基次磷酸钠、甲巯咪唑、吡啶硫酮锌、焦磷酸哌嗪、热敏材料、油酸甲酯、曲酸
- 主营：甲酸镍、水苏糖、阻燃剂、异山梨醇二甲基醚、柠檬醛、西瓜酮、氢醌酯、卡必醇、消泡剂、磷酸铁、肉桂醇、肉桂醛、碳酸镉、磷酸铝、银墨水、椰油胺、封装胶、化合物、桦木油、稀释剂、羟乙基、乙硫氮、润肤剂、球虫酯、矮壮素、异龙脑
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、乙烯基磷酸二乙酯、间二异丙苯、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、磷酸锰铁锂、β-磷酸三钙、十一烯酸、钨酸铝、1-乙炔基环已醇、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：甘氨酸、水苏糖、阻燃剂、硫酸锌、硫酸锆、硫酸锂、硫酸锶、硫酸锰、铝酸锌、1680-21-3、牛磺酸、褪黑素、磷酸铁、丙酸铵、苏云金、碳酸镁、麝香酮、肉桂醛、磷酸铝、王浆酸、椰油胺、赖氨酸、增塑剂、浸膏粉、乙氧基
- 主营：叔碳酸、十八醛、溶菌酶、癸二醇、邻苯二甲、乙基碳二、烷二甲醇、癸烷撑二醇、海藻糖、氨基丙基、氢路噻嗪、羟基癸酸、正十七烷、谷胱甘肽、松果体素、vc磷酸酯镁、2-甲基丁醛、朱栾倍半萜、丁烷四乙酸、表面活性剂、缩水甘油邻、10-羟基羊蜡酸、氢氯噻嗪杂质、盐酸邻菲罗啉、壳聚糖季铵盐
- 主营：杜仲素、对位酯、丙烯酸酯、二氧化硫脲、二苯基硅二醇、乙基麦芽酚、饲料添加剂、油酸基硬脂酸