Overview
Titration reagents are standardized solutions used to determine the concentration of an analyte in a sample through volumetric analysis. They consist of a titrant (e.g., HCl, NaOH) and often an indicator (e.g., phenolphthalein) to mark the endpoint. These reagents are foundational in analytical chemistry, ensuring accuracy in industries like pharmaceuticals, water treatment, and food quality control. Titrants are meticulously prepared to exact concentrations, traceable to primary standards. Indicators provide visual or instrumental signals when stoichiometric equivalence is reached. Common types include acid-base, redox, and complexometric reagents, each tailored for specific reactions.
Physical and Chemical Properties
Titration reagents are typically aqueous solutions with well-defined molarities, though non-aqueous variants exist for specific analyses. Their stability is critical; light-sensitive reagents (e.g., iodine solutions) require amber bottles. Density approximates water (~1.0 g/cm³) for dilute solutions but varies with concentration. Key chemical properties include reactivity with the target analyte and pH stability. For instance, EDTA (ethylenediaminetetraacetic acid) forms stable complexes with metal ions, making it ideal for hardness testing. Redox titrants like potassium permanganate must be protected from decomposition due to light or contaminants.
Main Applications
In pharmaceuticals, titration reagents verify active ingredient concentrations (e.g., aspirin purity via NaOH titration). Environmental labs use them to measure water hardness (EDTA) or chlorine levels (thiosulfate). The food industry relies on titration for acidity testing (e.g., vinegar) and peroxide value determination in oils. Industrial processes employ titration for quality control, such as sulfuric acid concentration checks in battery manufacturing. Clinical diagnostics utilize reagents like silver nitrate for chloride assays in bodily fluids.
Safety and Storage
Strong acids (e.g., HCl) and bases (e.g., NaOH) require corrosive-resistant containers and proper ventilation. Oxidizing agents (e.g., KMnO₄) must be stored away from organics. Labels should include hazard symbols (e.g., GHS pictograms) and handling instructions. Storage conditions vary: some reagents need refrigeration (e.g., iodine solutions), while others degrade if frozen. Shelf life is typically 6–24 months; expiration dates must be strictly observed to maintain accuracy.
B2B Procurement Guide
When sourcing titration reagents, prioritize suppliers with ISO 17025 accreditation for certified reference materials (CRMs). Specify required purity grades (e.g., ACS, USP) and batch-specific certificates of analysis (CoA). Bulk procurement may offer cost savings but consider storage limitations. For specialized applications (e.g., non-aqueous titrations), verify solvent compatibility. Automated titration systems may require proprietary reagents; confirm compatibility with existing equipment. Lead times can vary for custom concentrations.
Related Manufacturers
- 主营：卡尔费休试剂
- 主营：水质检测仪、高锰酸盐指数检测仪、cod检测仪、碱度检测试剂盒、氨氮检测仪、总磷检测仪、总氮检测仪、浊度检测仪、悬浮物检测仪、溶解氧检测仪、电导率检测仪、PH检测仪、色度检测仪、TOC检测仪、BOD检测仪、红外测油仪、紫外多参数检测仪、水质重金属检测仪、水中油检测仪、TDS检测仪、溶解氧在线检测仪、PH在线检测仪、浊度在线检测仪、余氯在线检测仪、大肠杆菌检测仪、菌落总数检测仪
- 主营：水质测定仪、浊度检测仪、色度检测仪、碱度检测试剂盒、COD测定仪、便携式水质测定仪、总氯检测仪、多参数水质分析仪、COD氨氮总磷总氮测定仪、悬浮物检测仪、二氧化氯检测仪、高锰酸盐指数检测仪、污水检测仪器、溶解氧测定仪、BOD测定仪、余氯测定仪、氨氮检测仪、总磷检测仪、总氮检测仪、水质叶绿素a检测仪、ph检测仪、蓝绿藻检测仪、红外测油仪、电导率检测仪、水质重金属检测仪、多参数水质检测仪
- 主营：桐油、甘油、乙二醇、麦芽糊精、磷酸、三乙醇胺、亚磷酸二甲酯、碳酸甲乙酯、磷酸铁、碘化钠、葡萄糖酸钠、甲基吡咯烷酮、丙二醇、二甲基乙酰胺、二价酸酯、丙二醇甲醚、二甲基亚砜、无水乙醇、甲醇、二甲苯、正丁醇、正己烷、醋酸乙酯、谷氨酸钠
- 主营：氧化铈、氧化镧、硝酸铈铵、高纯碳酸铈、硫酸高铈、硫酸铈、大粒径碳酸铈、低氯根碳酸铈、氢氧化铈
- 主营：卡尔费休试剂1、标准品、DRE
- 主营：福美钠、漂白粉、次氯酸钠、强氯精、漂粉精、DOP、DBP、蛋白胨
- 主营：丁二酮肟、盐酸萘乙二胺、苯酚红
- 主营：黄丹粉、除漆剂、红丹粉、络合滴定试剂、除锈剂、脱塑剂、黄血盐钾、无水氟化钾、磷酸三丁酯、硅磷晶、硫氰酸钠
- 主营：环戊酮、甲酸镍、阻燃剂、草酸镧、钼酸铵、催化剂、钒酸铋、溴氨酸、硝酸锆、碳酸镧、白僵菌、磷酸铁、钨酸酐、氟化镧、视黄醇、叔丁醇、杀螨剂、杀虫剂、醋酸钬、抗粘剂、氟化镥、肟菌酯、氢化钠、氯铂酸、氟化镁
- 主营：棕榈酸、乙酸铋、异喹啉、化学试剂、分析试剂、胶粘剂、丙烯酸酯、透明液体、二乙二醇、光引发剂、岩白菜素、对甲苯磺酸、苯甲酸苄酯、偏苯三酸酐、六氟异丙醇、纳米氧化铽、六氟磷酸铯、表面活性剂、蓖麻醇酸锌、乙基纤维素、荧光指示剂、2-乙二硫醇、4-二氟苄溴|、丙烯酸羟乙酯、3-丙烷磺内酯
- 主营：葡萄酒、脱落酸、催化剂、检测标志试剂、对氨基苯乙酸、4-吡咯烷基吡啶、原料营养补充剂
- 主营：双盐酸肼、单盐酸肼、5-二甲基海因、水溶羊毛脂、三硫代碳酸钠、福美钠、苯并咪唑、纤维醋法酯
- 主营：卡尔费休试剂、色谱试剂
- 主营：医药中间体、香精香料、硅烷偶联剂、氧化石蜡皂、苯乙烯磷酸、苯甲羟肟酸、H205、阻聚剂706、阻聚剂701、萤石矿捕收剂、白钨矿捕收剂、稀土矿捕收剂、氧化锑矿捕收剂、活化剂
- 主营：紫胶片、碳酸钠、氮杂双环、n-甲基吡咯烷酮