Overview
Orange II Standard Solution is a certified reference material derived from the azo dye Acid Orange 7. It is widely used in analytical laboratories for instrument calibration and method validation due to its consistent absorbance properties. The solution is typically prepared in precise concentrations to ensure reproducibility in spectrophotometric measurements. As a secondary standard, Orange II is favored for its stability and compatibility with aqueous and alcoholic solvents. Its vibrant color and predictable spectral behavior make it a staple in quality control protocols for industries ranging from textiles to environmental testing.
Physical and Chemical Properties
The solution exhibits an orange to reddish-brown hue, with absorbance peaks around 485 nm in visible light spectroscopy. Its molecular structure includes a sulfonate group, enhancing water solubility. The dye is chemically stable under standard storage conditions but may degrade under prolonged UV exposure or extreme pH. Density approximates 1.0 g/cm³ for typical working concentrations. While the solid form of Orange II has a defined melting point, the solution form lacks measurable phase transition points. Solubility is high in polar solvents, with negligible volatility due to its ionic nature.
Main Applications
Primary use cases include calibration of UV-Vis spectrophotometers to verify wavelength accuracy and photometric linearity. Laboratories employ it to validate analytical methods per ISO/IEC 17025 standards. In textile manufacturing, it serves as a reference for dye batch consistency testing. The solution also aids in teaching laboratories to demonstrate Beer-Lambert law principles. Environmental labs may use it to simulate colored wastewater for treatment efficiency studies. Its traceability to NIST or other national metrology institutes ensures data integrity in regulated industries.
Safety and Storage
Though not classified as acutely toxic, the solution may cause mild skin or eye irritation. Personal protective equipment (gloves, goggles) is recommended during handling. Spills should be contained with absorbent materials and disposed per local regulations for organic dyes. Storage requires amber glass bottles to prevent photodegradation. Ideal temperatures range between 15-25°C. Shelf life typically exceeds two years when unopened, but users should verify absorbance values periodically for critical applications. Incompatible with strong oxidizers and reducing agents.
B2B Procurement Guide
When sourcing Orange II Standard Solution, prioritize suppliers with ISO 17034 accreditation for reference materials. Key specifications to confirm include certified concentration (±1% tolerance), expiration date, and traceability documentation. Bulk purchases (5+ liters) may attract 10-15% discounts but require verification of stability claims. For international shipments, ensure compliance with chemical transport regulations (e.g., UN proper shipping name). Some vendors offer custom concentrations or matrix-matched solutions for specialized applications. Request material safety data sheets (MSDS) and certificates of analysis (CoA) for regulatory compliance.
Related Manufacturers
- 主营：无水乙醇、乙酸乙酯、磷酸、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：热收缩膜、收缩膜、热缩膜、热缩袋、pof收缩膜、交联膜、pvc收缩膜、bopp薄膜、热封膜、气泡膜、密封袋、自封袋、珍珠棉、泡棉、opp胶袋、纸护角、纸包角、包装袋、包装膜、泡泡袋、快递袋、印刷膜、pe膜、泡沫
- 主营：不干胶贴标机、贴标机
- 主营：化学试剂、氯金酸、卡尔费休、乙醇、异丙醇、药用辅料、依地酸钙钠、碳酸钠、盐酸氨丁三醇、龙胆酸、枸橼酸钠、甲醇、氢氧化钠、钴锰催化剂、硫酸锰、乙腈、色谱试剂、助剂、指示剂、醋酸锰、醋酸钴、氨丁三醇、尿素、硼酸
- 主营：包装盒、茶叶包装盒、礼品盒、化妆品包装盒、保健品包装盒、高档礼盒、纸盒、蛋糕盒、日历、台历、红包、利是封、贺卡、药盒、手提袋、酒盒、牙膏盒、防伪标、PVC胶盒、不干胶、证书、吊牌、月饼盒、画册、刮刮银
- 主营：全氟聚醚二醇、全氟三丁胺、聚硅氮烷、特种硅油、特种硅树脂
- 主营：门票印刷、食品标签印刷、不干胶标签制作、机场登机牌印刷、二维码防伪标签、卷筒门票印刷、钢铁吊牌标签、一物一码标签印刷、覆膜防伪标签印刷、卷筒标签印刷厂、矿泉水标签、不干胶标贴印刷、卷筒标签印刷、啤酒标签印刷、吊牌标签印刷、不干胶彩色印刷、圆形二维码防伪标签、烫金贴纸印刷、pet标贴定做、彩色透明PET标签、游乐园景区门票印刷、彩色双面防伪标签、卷筒可变条码标签、服饰标签吊卡印刷、可变二维码印刷
- 主营：水质分析仪、HACH、哈希、在线水质、聚酰亚胺、哈希代理、PH、水质检测仪、水质监测仪、电导率仪、总氯、COD、总磷总氮、溶解氧、HANNA、哈纳、实验室水质、便携式水质、哈希中国、水质仪表、溶氧、余氯、氨氮、中科院聚酰亚胺、测定仪
- 主营：灌装机、封口机、真空包装机、分装机、自动包装机、收缩机、封切机、打包机、捆扎机、喷码机、快递打包机、封箱机、铝箔封口机、超声波封尾机、面粉袋封口机、颗粒包装机、液体包装机、酱料包装机
- 主营：集装箱养护室、混凝土搅拌站试验仪器、标准养护室恒温恒湿设备、混凝土养护箱、混凝土标养箱
- 主营：集装箱养护室、混凝土养护箱、混凝土搅拌机、混凝土压力机、混凝土搅拌站试验仪器、混凝土抗渗仪、混凝土冻融试验机
- 主营：封口机、封尾机
- 主营：麦芽糖酸、苯氧基环磷腈、甲巯基四氮唑
- 主营：化学品、香精香料、试剂、中间体、有机硅、橡胶树脂、催化剂、纳米材料
- 主营：透明板、检测仪器、平整度仪、清洗疏通车、刚度试验机、板式测厚仪、冲击试验机、破乳试验机、静载试验机、水平渗透仪、压力试验机、多功能洒水车、网格布试验箱、纯电动消防车、矿物棉振筛机、内外压试验机、相容性试验箱、憎水性测试仪、集装箱养护室、玻璃棉绝热材料、热荷重试验装置、钢管弯曲试验机、正反弯曲试验机、抗冲击试验装置、保温材料制样器