Overview
Deionized water is produced by removing dissolved ions (e.g., calcium, sodium, chloride) through ion exchange resins or reverse osmosis. Unlike distilled water, it may retain non-ionic impurities but offers higher purity for specific industrial needs. Its lack of conductive ions makes it indispensable in electronics and precision cleaning. In B2B contexts, deionized water is typically supplied in bulk tanks, drums, or smaller containers, with grades tailored to resistivity requirements. Pharmaceutical-grade DI water adheres to USP or EP standards, while technical-grade suits less critical applications like cooling systems.
Physical and Chemical Properties
Deionized water exhibits near-neutral pH (6.5–7.5) and extremely low conductivity due to the absence of dissolved salts. Its resistivity ranges from 1 to 18 MΩ·cm, depending on purification level. Unlike tap water, it lacks buffering capacity, making it prone to pH shifts when exposed to air (CO₂ absorption). Despite its purity, DI water can leach ions from containers or equipment, necessitating inert materials like polyethylene or stainless steel for storage. Its solvent properties are enhanced for polar compounds but ineffective for non-polar substances.
Main Applications
In laboratories, DI water is used for preparing buffers, calibrating instruments, and rinsing glassware. The pharmaceutical industry relies on it for drug formulation and equipment sterilization. Electronics manufacturers use ultra-pure DI water to clean silicon wafers and circuit boards, where even trace ions can cause defects. Industrial applications include boiler feedwater, chemical synthesis, and automotive battery production. Its lack of scaling minerals prevents deposits in high-temperature systems. DI water also serves as a coolant in laser systems and medical devices.
Safety and Storage
While non-hazardous, deionized water requires careful handling to maintain purity. Storage tanks must be airtight to prevent CO₂ absorption and microbial growth. UV sterilization or microfiltration is recommended for long-term storage. Containers should be labeled clearly to avoid confusion with less pure water types. Prolonged exposure to DI water can corrode metals due to its aggressive solvent action on oxide layers. Personal protective equipment (PPE) like gloves is advised for extended handling.
B2B Procurement Guide
When procuring deionized water, specify resistivity (e.g., >10 MΩ·cm for electronics), microbial limits (e.g., <100 CFU/mL), and packaging (e.g., ISO tanks vs. jerricans). On-site generation systems may be cost-effective for high-volume users but require resin regeneration maintenance. Suppliers should provide certificates of analysis (CoA) for critical parameters. Consider regional logistics—DI water is often produced locally due to transport costs. For reference, bulk purchases (≥1,000 liters) commonly reduce costs by 20–40% compared to retail packaging.
Related Manufacturers
- 主营：染料防冻液、工业级甲醇、瓶装实验试剂、木醇工业酒精
- 主营：塑料桶、垃圾桶、机油桶、塑料水桶、涂料桶、润滑油桶、食品塑料桶、加厚塑料桶、化工塑料桶、化工桶塑料桶、白色塑料桶、透明塑料桶、食品级塑料、密封塑料桶、25升塑料桶、工业塑料桶、涂料塑料桶、带盖塑料桶、圆形塑料桶、双层塑料桶、手提塑料桶、润滑剂塑料桶
- 主营：漂白剂、脱色剂、正丁醇、酸度调节、低温脱硝剂
- 主营：小苏打、碳酸氢钠、氯化钙、二水粉氯化钙、元明粉、焦亚硫酸钠、氯化镁、纯碱、超细小苏打
- 主营：pph储罐、石英砂酸洗罐、加药桶、塑料水箱、塑料水塔、森林消防水箱、pp喷淋塔、pph反应釜、pp废气塔、pp除雾塔
- 主营：工业火碱、工业片碱、氢氧化钠、污水处理专用碱、工业烧碱、工业级片碱、片碱、99片碱、工业氢氧化钠、99氢氧化钠、纯碱、99火碱、99烧碱、固碱、君正片碱、天工片碱、优固邦片碱、天业片碱、河北片碱、高度片碱、高度氢氧化钠、高度烧碱
- 主营：水箱过滤头
- 主营：氢氧化钠、氢氧化钾、硬脂酸钙、水杨酸、十四酸、柠檬酸、聚合氯化铝、亚硝酸钠、保险粉、硫酸镍、硬脂酸锌、硫酸铜、碳酸锂、葡萄糖、焦磷酸钾、草酸、七钼酸铵、雕白粉、钼酸钠、二氯甲烷、冰醋酸、活性炭、磷酸、丙三醇
- 主营：[]
- 主营：化工产品、树脂、表面活性剂、水性材料、油包水乳化剂、水包油乳化剂、水性硬脂酸锌、水溶性硅油、乳化剂、消泡剂、硅油、柔软剂、固化剂、抗静电剂、脱膜剂、起泡剂、种子包衣、化妆品级原料、异构十二烷、金属脱膜剂、塑料抗静电剂、环氧树脂固化剂、棉麻柔软剂、甲基硅油、CAB系列起泡剂
- 主营：分析标准品、质控样品、试液、缓冲液、指示液、滴定液、标准溶液、标准物质、标准样品
- 主营：森林消防泵、灭火机、防寒服、防汛挡水板、可移动防水板、破拆工具、救生装备、手抬机动泵、应急救援包、森林防火服、风力灭火器、阻燃灭火防护服
- 主营：在线氧分析仪、在线滴定分析系统、氮氧化物转化器、在线微量水分析仪、在卡尔费休水分分析仪、电解液水分分析仪、在线库仑水分析仪原理、无水氟化氢水含量分析、HF在线水份分析仪、电解液水含量分析仪、有机溶剂水份分析仪、水分析仪、甲基吡咯烷酮水分析仪、在线气相色谱仪、在线酸碱浓度分析仪、在线防爆氧分析仪、混酸浓度分析仪、盐酸硫酸浓度检测仪、氢氟酸浓度检测仪、氟化工氧含量检测仪、氧分析仪、气相色谱仪
- 主营：检测试剂盒、Elisa试剂盒、农残检测试剂盒、试剂、液相检测、测试盒、检测卡、比色法检测、荧光法检测
- 主营：氢氟醚、电子氟化液、AK-225、PCBA洗板水、无水乙醇、六氯丙烯二聚体、六氟丙烯三聚体、3M电子氟化液、HFC-365mfc、环保清洗剂、碳氢清洗剂、马达转子清洗剂、防锈清洗剂、微电机转子清洗剂、干洗油、粉末冶金清洗剂、工业清洗剂、电子清洗剂、医疗器械清洗剂、HCFC-141b、正溴丙烷、甲基吡咯烷酮、异丙醇、成品油、甲醇乙醇汽油