2,4-MDA为含有95.0%以上的2,4-二氨基二苯甲烷和少量的
4,4-二氨基二苯甲烷的芳香二胺混合物，其主要成分的结构式为:；
室温下呈白色或浅黄色固体状态。它是一种重要的化工中间体、医药中间体、具有优良的力学性能、低收缩率、耐高温性能、耐辐射性能和耐磨耗性能，配合MDA100使用更方便操作。

2,4-MDA is an aromatic diamine mixture containing more than 95.0% of 2,4-diami-nodiphenylmethane and a small amount of 4,4-diaminodiphenylmethane. It is lightyellow or brown color solid state at room temperature.. It is an important chemicalintermediate and pharmaceutical intermediate. It has excellent mechanical properties,low shrinkage, high temperature resistance, radiation resistance and wearresistance,especially mixed use with MDA100.

贮存注意事项 
2,4-MDA-100储存时库房应干燥、通风、避光，严禁受热，防止氧化。运输时严禁破漏、日晒、雨淋。

保质期 
在规定的储存条件下，2,4-MDA保质期为1年，超过保质期经检验符合本技术指标仍可使用。

安全注意事项 
2,4-MDA-联合国危规号 UN2811;可燃，但不易燃;着火后喷水或使用干粉、二氧化碳、泡沫灭火剂灭火。2,4-MDA 可以通过眼睛、皮肤侵入人体，症状表现为严重肝中毒、发烧、上腹痛、黄胆、食欲减退、肾损伤并刺激眼睛。穿戴清洁完好的防护用具(防护服、手套、靴、头盔)，以保护皮肤;戴防护镜、面罩、呼吸器;眼接触:立即用流动清水冲洗至少15分钟;皮肤接触:脱去被污染衣服，
用大量水冲洗皮肤。

Warehouse and Storage Storage 
When storing 2,4-MDA, the warehouse shall be dry, ventilated and protected from light. It is strictly prohibited to be heated to prevent oxidation. During transportation, leakage, sunlight and rain are strictly prohibited.

Shelf life 
Under the specified storage conditions, the shelf life of 2,4-MDA is one year. After exceeding the shelf life, it meets the technical index Still available.

Safety precautions 

2,4-MDA, the UN NO is 2811; Flammable, but not flammable; Spray water after fire or use dry powder, carbon dioxide andfoam extinguishing agent to extinguish fire. 2,4-MDA can invade the human body through eyes and skin. The symptoms aresevere liver poisoning, fever, epigastric pain, yellow bile, anorexia, kidney injury and eye iritation. Wear clean and intactprotective equipment (protective clothing, gloves, boots and helmets) to protect the skin; Wear protective glasses, mask andrespirator; Eye contact: immediately flush with flowing water for at least 15 minutes; Skin contact: take off contaminatedclothes and wash skin with plenty of water.