Overview
Benzoic Acid Certified Reference Material (CRM) is a precisely characterized chemical standard used for quality assurance in analytical laboratories. These materials are produced under strict quality control conditions to ensure homogeneity, stability, and traceability to international measurement standards. CRMs serve as benchmarks for instrument calibration, method validation, and proficiency testing. The benzoic acid CRM is particularly valuable for food safety testing, pharmaceutical analysis, and environmental monitoring where accurate quantification of preservatives is required.
Physical and Chemical Properties
The benzoic acid CRM exhibits the characteristic properties of pure benzoic acid with additional guarantees of metrological traceability. Its crystalline structure and defined melting point make it ideal for thermal analysis calibration. The material typically has purity ≥99.9% with documented uncertainty values. Key chemical properties include its weak acidity (pKa 4.20) and UV absorption characteristics, which are critical for spectroscopic applications. The CRM's stability is ensured through rigorous testing, with most suppliers providing data on long-term storage performance under recommended conditions.
Main Applications
In food testing laboratories, benzoic acid CRM is essential for validating methods to detect this common preservative in beverages and processed foods. Pharmaceutical labs use it for system suitability testing in HPLC methods according to pharmacopeial standards. The material also serves as a primary standard for titrimetric analysis due to its well-defined composition. Environmental labs apply it in wastewater analysis, while research institutions use it for method development and inter-laboratory comparison studies.
Safety and Storage
While benzoic acid is generally low in toxicity, the powdered form requires careful handling to prevent inhalation. Laboratories should store CRMs in their original containers with desiccants, maintaining temperatures between 15-25°C to preserve certification validity. CRMs typically have defined shelf lives (commonly 2-3 years) from the date of certification. Users should never return used material to the original container to prevent contamination that could compromise the CRM's certified values.
B2B Procurement Guide
When procuring benzoic acid CRMs, buyers should prioritize suppliers accredited to ISO 17034 and ISO/IEC 17025 standards. Key procurement considerations include the scope of certification (analyte concentrations, uncertainty values), batch size requirements, and documentation needs. For bulk purchases, some manufacturers offer custom certification or larger package sizes. Lead times for certified materials can be longer than regular chemicals due to the extensive characterization process. Many suppliers provide technical support for method implementation using their CRMs.
Related Manufacturers
- 主营：直链淀粉标准溶液、支链淀粉标准溶液、环氧乙烷标准溶液、苯甲酸标准物质、碱性碘化汞钾标准溶液、土壤易溶盐、嗅辨考核液、2020药典纯化水检测试剂、可见异物标准物质、玻璃微珠粒度、土壤标准物质、溶液标准物质、铝土矿标准物质、氯化钠渗透压、微粒标准物质
- 主营：elisa试剂盒、菌落总数测试片、快速检测试纸条、苯甲酸、农残检测仪、便携式胶体金读数仪、食品安全检测仪、真菌毒素检测仪、多功能食品安全检测仪、粮油饲料检测试剂盒、牛奶乳制品检测试剂盒、兽药残留检测试剂盒、菌落测试片、elisa检测试剂盒、农残快速检测试剂盒、农残检测试剂盒、ATP荧光检测仪、重金属检测试剂盒、黄曲霉毒素检测试剂盒、水体病毒富集采集仪、脱氢乙酸快速检测卡、糖精钠快速检测卡、瘦肉精检测三联卡、黄曲霉毒素快速检测试、农药残留快速检测试剂、毒死蜱检测卡
- 主营：药品检测标准品、药物杂质标准品、对照品、苯甲酸、中药对照药材、中药农残空白基质、分析标准品、仪器检测校准品、金属离子标准溶液、滴定溶液、食品检测标准物质、有机检测标准溶液、指示液、缓冲液、电导率溶液、PH标准溶液、熔点标准品、国家标准物质、比色液
- 主营：珍珠粉、菱镁矿、磷石膏、粮食标准样品、矿石金、小麦铅、铝土矿、阻燃剂、磷元素、氯霉素、钼矿石、南瓜粉、同位素、250ml/瓶、土壤成、贫铁矿、水杨酸、玄武岩、六价铬、氟溶液、石油烃、硅铝钡、正辛烷、富锰渣、硅钙钡、小麦粉
- 主营：铜矿石、铁精粉、铝土矿、标准样品、锰矿石、硫精矿、水稻土、金矿石、铁矿石、石灰石、烧结矿、醛酮类、2ml标准、半自动、硫铁矿、铜精矿、硅锰合金、标准物质、甲醇中邻、瓶带证书、硅钙钡铝、甲醇中对、土壤全量、红外波数、袋带证书