Overview
Azure A is a synthetic thiazine dye primarily used in biological staining and textile applications. It belongs to the azure dye family, known for their metachromatic properties, meaning they can exhibit different colors when bound to various tissue components. The dye is particularly valued in histology for staining nucleic acids and acidic tissue structures. The compound was first synthesized in the early 20th century as part of research into staining techniques for microscopy. Today, it remains an important tool in both research and industrial applications, particularly where precise color differentiation is required.
Physical and Chemical Properties
Azure A appears as a dark green crystalline powder with good solubility in both water and ethanol. Its molecular structure includes a thiazine ring system, which is responsible for its staining characteristics. The dye exhibits strong absorption in the visible spectrum, typically around 630-650 nm when in solution. Chemically, Azure A is relatively stable under normal conditions but may decompose when exposed to strong oxidizers or extreme heat. Its staining properties are pH-dependent, with optimal performance in slightly acidic conditions. The dye's metachromatic behavior - appearing different colors when bound to different substrates - makes it particularly useful for distinguishing cellular components.
Main Applications
In biological applications, Azure A is commonly used in Romanowsky-type stains for blood smears and bone marrow preparations. It helps differentiate various blood cell types and identify abnormal cells in diagnostic pathology. The dye's affinity for nucleic acids also makes it useful in chromosome staining and microbiological studies. Industrial applications include textile dyeing, where Azure A provides vibrant blue shades on protein fibers like wool and silk. Some specialized uses include staining paper products and as a component in certain types of inks. Recent research has explored its potential in photodynamic therapy due to its light-absorbing properties.
Safety and Storage
Azure A should be handled with standard laboratory precautions. While not classified as highly toxic, it can cause irritation to skin, eyes, and respiratory system upon exposure. Appropriate personal protective equipment including gloves and safety glasses should be worn when handling the powder or concentrated solutions. For storage, keep containers tightly sealed in a cool, dry place protected from light. The dye is stable at room temperature for extended periods when properly stored. Avoid contact with strong oxidizing agents, and ensure good ventilation when working with the powder to prevent inhalation of dust particles.
B2B Procurement Guide
When procuring Azure A for commercial or research purposes, buyers should specify the required purity level, which typically ranges from 70% to 95% for different applications. Technical grade is sufficient for textile use, while biological staining requires higher purity. Packaging options vary from small (25g) bottles to bulk kilogram quantities. Key considerations include verifying the CAS number (531-53-3) to ensure product authenticity, checking for certification of analysis, and confirming shipping and storage requirements. Lead times may vary depending on supplier inventory, so advanced planning is recommended for large orders. Some suppliers offer customized formulations or pre-made solutions for specific applications.
Related Manufacturers
- 主营：聚苯胺、脯氨酸甲酯盐酸盐、苄基三甲基氯化铵
- 主营：丁酸钠、硅酸镁铝、单氟磷酸钠、铬天青S、镀膜钴粒、食品添加剂、表面活性剂、钼酸钠、钼酸铵、乙酰丙酮铝、磷酸铁、双季戊四醇、聚甲氧基二甲醚、醋酸钴、若丁、氧化铝、碳酸锆、碱式碳酸铜、乙酰氧肟酸、香芹酚、甲基硅酸钾、二硫化钼、氢氧化锌
- 主营：无水乙醇、乙酸乙酯、磷酸、铬天青S、甲醇、乙二醇、二氯甲烷、异丙醇、二甲苯、各种化学试剂、化工原料
- 主营：苯酚红、酚酞试剂、亚甲基蓝、铬天青s、生物染色剂、龙胆紫结晶紫甲基紫、碱式碳酸铅
- 主营：雕白块、雕白粉、三乙醇胺、amps、硫代乙酰胺、聚丙烯酸钠、氢氧化铜、乙酰丙酮铝、亚甲基双丙烯酰胺、醋酸锰、氯化钾(分析纯)、丁酸钠、硅酸镁铝、SIPM、聚甲氧基二甲醚、偏硼酸钡、碳酸锰
- 主营：木质醛、酮锌吡、褪黑素、酸cas号、甘油酯、粘蛋白、薄荷脑、苯氨基、苹果酸、三羟基、皮粉五、甲基蓝、生根粉、动力精、薄荷酮、二羟基、3α羟基、萘酰胺、胶粘剂、磷酸三、嗪二酮、氨酸钾、嘧啶酮、氨酸镁、407环氧
- 主营：氯化氢乙醇、二苯基硅二醇、甲基磺酸铋、铬天青S、阻燃剂DDP、萃取剂、HTPB、防老剂
- 主营：防老剂、香精香料、乳化剂、铬天青S、壳聚糖
- 主营：生化试剂、蛋白与免疫、ELISA、生化试剂盒、染色试剂、微生物培养、感受态、细胞检测、抗体、抑制剂、助溶剂、分析对照品、标准品、蛋白预制胶、免疫组化、缓冲液、培养基、分离液、磁珠
- 主营：苯胺蓝、溴酚蓝、刚果红、铬天青S、溶剂红、丽春红、菲罗啉、结晶紫、酒精元、黑色素、硝氮黄、变色粉、钴试剂、指示剂、甲基红、变色酸、罗丹明、达旦黄、苏丹红、砷试剂、镁试剂、铝试剂、显色剂、苋菜红、中性红、乙基紫
- 主营：硫酸铝、异丙醇、溴酚蓝、铬天青S、氢氟酸、刚果红、硫酸铬、二甲苯、碳酸锂、硼酸锌、甘露醇、硝氮黄、甲硝唑、甲酚红、漂白粉、媒介黑、苯甲醇、醋酸铜、甲基红、醋酸锌、草酸钠、柠檬酸、石油醚、硫酸钡、中性红、硫酸钴
- 主营：甲酚红、刚果红、龙胆紫、染天青S、孔雀石绿、邻菲罗啉、二甲酚橙、玫瑰苯胺、化学试剂、金属指示剂、荧光指示剂、酸碱指示剂、碱性玫瑰精、石蕊掘试剂
- 主营：溶蛋白、胰蛋白酶、玉米醇蛋白、蔗糖、硫代半乳糖苷、TRIS
- 主营：网站建设、企业官网设计、网站搭建
- 主营：铬天青s、氨基丁酸、漆酶、维生素