Overview
Sodium citrate is a sodium salt of citric acid, commonly used as a food additive, buffering agent, and emulsifier. It is produced through the neutralization of citric acid with sodium hydroxide or sodium carbonate. The compound is widely recognized for its safety and versatility, making it a staple in various industries. In the food industry, sodium citrate is valued for its ability to regulate acidity and enhance flavors. It is also used in pharmaceuticals as an anticoagulant and in industrial applications for its chelating properties. Its non-toxic nature and biodegradability further contribute to its widespread use.
Physical and Chemical Properties
Sodium citrate appears as a white, crystalline powder with a slightly salty taste. It is highly soluble in water but insoluble in alcohol. The compound is stable under normal conditions but decomposes at high temperatures, releasing carbon dioxide and sodium carbonate. Its buffering capacity makes it effective in maintaining pH levels in solutions, which is crucial in food and pharmaceutical formulations. Sodium citrate also acts as a sequestrant, binding metal ions to prevent oxidation and spoilage. These properties make it indispensable in processes requiring precise pH control and metal ion management.
Main Applications
In the food industry, sodium citrate is used as an acidity regulator in beverages, dairy products, and processed foods. It helps stabilize emulsions in cheeses and prevents crystallization in jams and jellies. The compound is also a key ingredient in effervescent tablets and powdered drinks. Pharmaceutical applications include its use as an anticoagulant in blood collection tubes and as an alkalizing agent in medications. Industrially, sodium citrate is employed in cleaning agents for its ability to soften water and remove scale. Its biocompatibility and non-toxicity make it suitable for cosmetic and personal care products as well.
Safety and Storage
Sodium citrate is generally recognized as safe (GRAS) by regulatory authorities when used in accordance with guidelines. However, excessive inhalation of dust may cause respiratory irritation, so proper handling and protective equipment are recommended. Storage should be in a cool, dry place, away from moisture and direct sunlight. The compound is stable under normal conditions but should be kept in tightly sealed containers to prevent clumping or degradation. Disposal should follow local environmental regulations, as sodium citrate is biodegradable and poses minimal ecological risk.
B2B Procurement Guide
When procuring sodium citrate, buyers should prioritize suppliers who provide certificates of analysis (CoA) to verify purity and compliance with standards such as USP (United States Pharmacopeia) or FCC (Food Chemicals Codex). Bulk purchases often come with cost advantages, but storage capacity and shelf life should be considered. It is advisable to source from manufacturers with a proven track record in chemical production to ensure consistency and quality. Buyers should also inquire about packaging options, as moisture-resistant bags or drums may be necessary for long-term storage. Price negotiations should factor in volume discounts and shipping costs.
Related Manufacturers
- 主营：磺酸、aes、6501、焦磷酸钠、六偏磷酸钠、柠檬酸、柠檬酸钠、葡萄糖酸钠、op-10、aeo-9、k12、aos、氧化胺、甜菜碱、三乙醇胺、聚乙二醇、磷酸盐、磷酸二氢钾、磷酸氢二铵、焦磷酸钾、食品添加剂、葡萄糖、麦芽糊精
- 主营：醋酸钴、硝酸铜、氯化钴、氟硅酸钠、硫化钠、丙酸钠、氯化亚锡、三氯化铁、氯化铁、氧化钴
- 主营：小苏打、纯碱、聚合氯化铝、氢氧化钠、次氯酸钠、柠檬酸、磷酸三钠、除磷剂、葡萄糖、工业盐、融雪剂、聚丙烯酰胺、硼砂、液碱、食品片碱、粒碱、碳酸氢铵、高效除磷剂、聚合硫酸铁、工业除磷剂、工业级国标除磷剂、工业级聚合硫酸铁、污水处理除磷剂、净水絮凝剂、絮凝沉淀脱色剂
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、海藻酸钠、聚丙烯酸钠、L-蛋氨酸、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素C、维生素D3、维生素E、D-生物素、阿拉伯胶、刺槐豆胶、瓜尔豆胶、果胶 高酯果胶 低酯、黄原胶、结冷胶 低酰基结冷胶、卡波姆
- 主营：营养强化剂、抗氧化剂、甜味剂、食品级增稠剂、食用色素、酶制剂、粉末香精、酸度调节剂、食品乳化剂、着色剂、抗结剂、增味剂
- 主营：蛋氨酸、l-胱氨酸、l-精氨酸、柠檬酸钠厂家、l-丝氨酸、l-酪氨酸、l-脯氨酸、l-赖氨酸、l-缬氨酸、l-茶氨酸、l-色氨酸、l-亮氨酸、l-谷氨酸、l-苏氨酸、l-苯丙氨酸、l-天冬酰胺、l-异亮氨酸、l-谷氨酰胺、l-天冬氨酸、l-天门冬酰胺、l-羟基脯氨酸、l-天门冬氨酸、阿洛酮糖、赤藓糖醇、大豆低聚糖、甘露寡糖
- 主营：二丙二醇、二甘醇、甲基丙二醇、柠檬酸钠、异辛醇、片碱、草酸、氢氧化钾、氨基磺酸、三羟甲基丙烷
- 主营：草酸、纯碱、一水葡萄糖、一水柠檬酸、元明粉
- 主营：封闭剂、甲基磺酸、HD、DC、PVI、ALS、BOZ、VS、BPC48、BNO12、IZE、ON110、NN8906、NN9401、EHS47、分散剂、巴斯夫电镀中间体
- 主营：溶剂、聚氨酯、洗涤剂助剂、柠檬酸钠、聚氨酯涂料原料
- 主营：抗氧剂、防冻液原料
- 主营：乙二醇、山梨醇、酒石酸、柠檬酸、碳酸氢钠、无水硫酸钠、葡萄糖酸钠、硬脂酸、增稠剂、二甘醇、防腐剂、工业纯碱、新戊二醇、1.4丁二醇、食用纯碱、aes洗洁精、活性稀释剂、表面活性剂、三羟甲基丙烷、甘油
- 主营：阻燃剂、四氢苯酐、新戊二醇、一水柠檬酸、十二烷基硫酸钠、聚乙二醇、玉米淀粉、农用肥料、食品添加剂、半精炼石蜡、食用葡萄糖、树脂增塑剂、饲料添加剂、表面活性剂、营养填补剂、甘油丙三醇、防静电增溶剂、有机化工原料、饲料级蛋氨酸、l-赖氨酸硫酸盐、有机合成中间体
- 主营：非离子表面活性剂、一乙醇胺、二乙醇胺、亚硫酸氢钠、氢氧化钠、三乙醇胺、乙二醇单丁醚、二氯甲烷、壬基酚聚氧乙烯醚、硫脲、苯酚、氨基磺酸、硼酸、甲酸-94%、磷酸、异丙醇、乙二胺、氢氧化钾、一异丙醇胺、二乙胺、磺酸、二乙烯三胺
- 主营：离子膜、絮凝剂、去氯剂、一水柠檬酸、焦亚硫酸钠、工业纯碱、金属清洗剂、聚合氯化铝、工业葡萄糖、还原剂防腐剂、净水高分子试剂
- 主营：氯化胆碱、酵母β葡聚糖、乳清蛋白粉、柠檬酸钠、甜菜碱、甜菜碱盐酸盐、维生素A、维生素B1、维生素B2核黄素、维生素B6、维生素D3、维生素E、烟酰胺、鱼油粉、DHA、左旋肉碱酒石酸盐、大豆肽、谷胱甘肽、牛骨胶原蛋白肽、鱼胶原蛋白肽、赤藓糖醇、低聚半乳糖、低聚果糖、低聚木糖、海藻糖、菊粉
- 主营：丙氨酸、蛋氨酸、半胱氨酸、聚丙烯酸钠、苯丙氨酸、茶氨酸、谷氨酸、瓜氨酸、胱氨酸、精氨酸、赖氨酸、酪氨酸、亮氨酸、脯氨酸、色氨酸、苏氨酸、谷氨酰胺、胍基乙酸、天冬酰胺、缬氨酸、异亮氨酸、组氨酸、聚谷氨酸、支链氨基酸、黄原胶