Overview
Phosphates are inorganic salts derived from phosphoric acid (H₃PO₄), forming a versatile series of compounds with the phosphate ion (PO₄³⁻) as their core. They are naturally occurring in minerals like apatite and are industrially synthesized for diverse applications. Phosphates play critical roles in biological systems (e.g., DNA, ATP) and industrial processes. In commerce, the term 'phosphate series' refers to products like mono-, di-, and trisodium phosphates, calcium phosphates, and ammonium phosphates. Their utility spans agriculture (fertilizers), food preservation (E-number additives), and water treatment due to their chemical stability and reactivity.
Physical and Chemical Properties
Phosphates exhibit high thermal stability, with melting points often exceeding 1,000°C. They are typically water-soluble, though solubility varies by cation (e.g., calcium phosphates are less soluble than sodium variants). Their buffering capacity makes them ideal for pH regulation in solutions. Key reactions include chelation of metal ions (e.g., in detergents to soften water) and nutrient release in soil. Some phosphates, like sodium tripolyphosphate (STPP), are hygroscopic, requiring dry storage. Analytical methods like ICP-MS or spectrophotometry are used to assess purity and composition.
Main Applications
Agriculture: Phosphates are vital in fertilizers (e.g., MAP, DAP) to supply phosphorus, a key plant nutrient. They enhance crop yields and soil fertility. Food Industry: Used as emulsifiers (e.g., in processed cheeses), acidity regulators, and leavening agents. STPP retains moisture in seafood and meats. Industrial: In detergents, phosphates soften water by binding calcium/magnesium ions. They also serve as flame retardants, corrosion inhibitors in metal treatment, and ceramic glazes.
Safety and Storage
While generally low in toxicity, excessive phosphate exposure can irritate skin/eyes. Dust inhalation should be avoided; PPE like gloves and masks is recommended. Environmental concerns include eutrophication from runoff, prompting regulations in detergent use. Storage requires airtight containers in cool, dry areas to prevent caking. Food-grade phosphates must comply with FDA/EFSA standards. Disposal should follow local guidelines to minimize ecological impact, especially for industrial-grade products.
B2B Procurement Guide
Buyers should specify: (1) Application (food, agriculture, industrial) to determine grade, (2) Purity (e.g., ≥98% for food use), (3) Packaging (25kg bags, bulk totes), and (4) Certifications (e.g., Halal, Kosher). Suppliers may offer technical data sheets (TDS) and material safety data sheets (MSDS). Prices fluctuate with raw material costs (e.g., phosphate rock) and energy expenses. Long-term contracts are advisable for large-volume purchases to mitigate market volatility.
Related Manufacturers
- 主营：有机颜料、无机颜料、金属络合染料、磷酸盐、溶剂染料
- 主营：海藻酸钠、乳酸链球菌素、卡拉胶、复合磷酸盐、温轮胶、黄原胶、苯丙氨酸、亮氨酸、苏氨酸、谷氨酸、蛋氨酸、牛磺酸、谷氨酰胺、半胱氨酸、酪蛋白酸钠、柑橘黄、羧甲基纤维素钠、聚丙烯酸钠、柠檬酸、氨基丁酸、胍基乙酸、定优胶、L-硒-甲基硒代半胱、干酪素
- 主营：甘氨酸、胍基乙酸、牛磺酸、复合磷酸盐厂家、沙蒿胶、黄原胶、卡拉胶、瓜尔豆胶、半胱氨酸、氨基丁酸、L-精氨酸、食品级亚硫酸氢钠、苯丙氨酸、谷氨酰胺、酪蛋白酸钠、胱氨酸、色氨酸、肌酸、富硒酵母、富铬酵母、氯化胆碱、魔芋粉、可可粉、L-抗坏血酸/vc、亮氨酸、干酪素/酪蛋白
- 主营：冰醋酸、甲酸、氨水、磷酸、亚硫酸氢钠、片碱、甲酸钠、草酸、三氯乙烯、四氯乙烯、苯酚、异丙醇、亚硝酸钠、柠檬酸、纯碱、焦亚硫酸钠、粒碱、二氯甲烷、甘油丙三醇、乙酸乙酯
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、苯乙烯磷酸、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、10-羟基癸酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、十一烯酸、钨酸铝、1-乙炔基环已醇、间二异丙苯、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：全氟三丁胺、二苄叉山梨醇、六氟丙烯二聚体、磷酸四钙、六氟环氧丙烷二聚体、异丙醇铝、纳米勃姆石、二异戊基硫醚、隐色结晶紫、邻菲罗啉
- 主营：化学品、香精香料、试剂、亚磷酸酯、中间体、有机硅、橡胶树脂、催化剂、纳米材料
- 主营：海藻酸钠、黄原胶、酪蛋白酸钠、多聚磷酸盐厂家、卡拉胶、胍基乙酸、瓜尔胶/瓜尔豆胶、核苷酸、L-精氨酸、亚硫酸氢钠、苹果酸、柠檬酸、乳酸链球菌素、明胶、木糖、低聚果糖、苏氨酸、色氨酸、牛磺酸、山梨酸钾、L-半胱氨酸盐酸盐、β-胡萝卜素
- 主营：检测仪、声级计、智能红外、磷酸盐、静电能谱、职业卫生、水质自动、生物安全柜、电子流量计、水质采样器、红外测温仪、烟气测试仪、气体分析仪、烟尘采样器、明渠流量计、微生物采样器、气溶胶采样器、厨房油烟检测
- 主营：三硫代碳酸钠、红色素-16、聚乙烯亚胺、二苯基碘六氟磷酸盐、三乙二醇二异辛酸酯、巯基苯并噻唑钠、L-丙交酯、乙交酯、石油酯-T50、多元醇苯甲酸酯、热压敏染料、光稳定剂、高分子降解材料
- 主营：维生素、营养强化剂、增稠剂、复合磷酸盐、甜味剂
- 主营：离子液体、5-二甲基吡唑、咪唑、丁基咪唑六氟磷酸盐、催化剂、阻燃剂、正丁醇锆、四氟硼酸锂、香兰基丁醚、氟化物、全氟辛基三甲氧基硅烷、丙酮肟、双酚E型氰酸酯、叔丁基乙烯基醚、钯碳催化剂、钛硅分子筛、硫酸烟酰苯胺、丙酮缩氨基硫脲
- 主营：铜盐、锰盐、锡盐、三聚氰胺磷酸盐、氧化亚镍、氧化钴、氢氧化钴、锆盐、无卤环保抑烟阻燃剂、无卤环保阻燃剂
- 主营：氟硅酸钠、片碱、氢氧化钠、磷酸、消毒液、次氯酸钠、药用辅料蔗糖、六氯乙烷、氟化钠、过碳酸钠、硫酸锌、聚乙二醇、柠檬酸、葡萄糖、氨基磺酸、乙二醇、氯化钙、硅酸钠、工业盐、氟硅酸镁、液碱、草酸、硫酸铜、硼砂、饲料添加剂
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、复合磷酸盐厂家、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、海藻酸钠、黄原胶、结冷胶 低酰基结冷胶、聚丙烯酸钠、卡波姆