Overview
Diphosphoric acid, also known as pyrophosphoric acid, is an inorganic compound with the molecular formula H4P2O7. It is a colorless, crystalline solid that is highly hygroscopic, meaning it readily absorbs moisture from the air. This compound is a derivative of phosphoric acid and is commonly used in various industrial applications due to its unique chemical properties. Diphosphoric acid is typically produced by heating phosphoric acid under controlled conditions. It is an important intermediate in the production of other phosphorus-containing compounds and is widely used in industries such as water treatment, food processing, and chemical manufacturing.
Physical and Chemical Properties
Diphosphoric acid is a colorless, crystalline solid with a density of 2.31 g/cm³. It has a melting point of 71.5 °C and decomposes upon further heating. The compound is highly soluble in water, where it forms phosphoric acid. Its hygroscopic nature makes it essential to store it in a dry environment to prevent it from absorbing moisture and degrading. The chemical structure of diphosphoric acid consists of two phosphate groups linked by an oxygen atom. This structure gives it unique reactivity, making it useful in various chemical reactions. It is also a strong acid, capable of donating multiple protons in aqueous solutions, which contributes to its effectiveness in industrial processes.
Main Applications
Diphosphoric acid is widely used in water treatment processes, where it helps to sequester metal ions and prevent scale formation. It is also employed as a food additive, particularly in the production of processed meats and cheeses, where it acts as a stabilizer and emulsifier. Additionally, it serves as a precursor in the synthesis of other phosphorus-containing compounds, such as fertilizers and detergents. In the chemical industry, diphosphoric acid is used as a catalyst and a buffering agent. Its ability to form stable complexes with metal ions makes it valuable in various industrial processes, including electroplating and metal finishing. The compound's versatility and reactivity ensure its continued relevance in multiple sectors.
Safety and Storage
Diphosphoric acid is a corrosive substance that can cause severe burns upon contact with skin or eyes. Proper personal protective equipment, including gloves and goggles, should be worn when handling this chemical. In case of exposure, affected areas should be rinsed immediately with plenty of water, and medical attention should be sought. Storage of diphosphoric acid requires a cool, dry environment to prevent moisture absorption and degradation. Containers should be tightly sealed and made of materials resistant to corrosion, such as polyethylene or glass. Proper labeling and segregation from incompatible substances, such as bases and reactive metals, are essential to ensure safety.
B2B Procurement Guide
When procuring diphosphoric acid, it is crucial to source it from reputable suppliers who provide detailed specifications and safety data sheets. Buyers should verify the purity and grade of the compound to ensure it meets the requirements of their specific application. Bulk purchases may offer cost savings, but proper storage facilities must be available to maintain the chemical's integrity. Transportation of diphosphoric acid should comply with relevant regulations, including proper packaging and labeling to prevent spills and exposure. Buyers should also consider the supplier's track record, certifications, and ability to provide technical support. Establishing long-term relationships with reliable suppliers can ensure consistent quality and timely delivery.
Related Manufacturers
- 主营：丁酮肟、甲乙酮肟、四氢噻吩、马来酸二乙酯、马来酸二丁酯、磷酸、多聚磷酸、单氟磷酸钠、磷酸二氢钙、正丁胺、盐酸羟胺、PEG1500、结晶氯化铝、甲基磺酸、乙腈、偏铝酸钠
- 主营：阻燃剂、乙酸镍、乙酸镝、磷酸铬、磷酸铝、庚二酸、硫酸锂、硫酸锶、溴氨酸、香茅醇、肌氨酸、锂电池、四氢萘、碳酸镁、碳酸镍、防冻剂、叔丁醇、氟苯基、浮选剂、稀释剂、羟乙基、去除剂、除磷剂、十八烯、蛋白酶
- 主营：橡胶油、白芷油、7782-92-5、二甲基、pbtcaona4、艾叶油、桉树醇、2905-60-4、5989-81-1、重质苯、活性炭、1305-62-0、1192-62-7、安息油、9005-32-7、正辛烷、7775-27-1、8050-09-7、1739-84-0、7786-30-3、黄糊精、6920-22-5、三辛胺、1897-52-5、7727-21-1
- 主营：18908-66-2、癸甲氯铵、咪唑烷酮、二异丁腈、二甲基溴化铵、饲料添加剂、分散剂工业、柠檬酸三丁酯、聚乙烯吡咯烷
- 主营：全氟三丁胺、全氟三乙胺、全氟三丙胺、磷酸铵、全氟聚醚、全氟萘烷、全氟己酮、羟基磷灰石、生物活性玻璃、布洛芬、溴壬烷、甲乙基、褪黑素、嘧啶钠、莪术油、显色剂、叔丁醇、茜素红、乙氧基、异戊醇、脯氨酸、茚三酮、氯唑沙
- 主营：科研试剂盒、酶免试剂盒、elisa试剂盒、牛磷脂酰肌醇二磷酸、生化试剂盒、细胞、生物试剂、进口ELISA试剂盒、PCR试剂盒、生化测试盒
- 主营：消泡剂、氯化铁、硫酸锰、磷酸二氢铝、聚磷酸铵、己二酸二酰肼、羟基乙叉二膦酸、山梨醇、漂白粉、防水剂、石灰氮、葡萄糖、麦芽糊精、抑尘剂、氯化石蜡、黄糊精、甲基硅酸钠、水溶肥、氨基磺酸、钾明矾、防冻粉、酸性清洗剂、栲胶、三氯化铁、硝酸铵钙
- 主营：椰子油、棕榈酸、十六酸、十二酸、葵二酸、十二胺、苯丙三、月桂酸、乳化剂、油酸皂、硼酸脂、净洗剂、乙醇胺、十八酸、硬脂酸、润滑油、粗油酸、十八胺、环烷酸、石油酸
- 主营：麦芽糖酸、苯氧基环磷腈、甲巯基四氮唑
- 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、间二异丙苯、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、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：5-三甲基己醛、正癸酸、樊多B醛、聚乙二醇甲醚甲基丙烯酸酯、二氧化钒、3二羟基萘、二苯酮、山梨醇缩水甘油醚、聚苯胺、磷脂酸铵盐、谷胱甘肽、三羟甲基氨基甲烷盐酸盐、庚酰氯、菲尼酮、茶香醇、苹果酸、菠萝醚
- 主营：羟基乙叉二膦酸、阻垢剂
- 主营：苯甲醇、苯甲酸、异丙醇、乙二醇、乙二醇单丁醚、甲基丙二醇、二甘醇胺、乙萘酚、一异丙醇胺、苯酚、PTA、DMT、DMF、三乙醇胺、对羟基苯甲醚、双酚A、DBP
- 主营：2-甲基咪唑、咪唑、对甲苯磺酸、4-对二氯苄、二氢茉莉酮酸甲酯、对苯二甲酸、乙二胺四乙酸二钾、防染盐S、黄血盐钾、聚六亚甲基胍盐酸盐、红丹粉、黄丹粉、巴豆酸、巴豆醛、氢氧化钡、三硫代碳酸钠、丙酮肟、九水硫化钠、碱式碳酸铅、乙醛肟、甲基三乙氧基硅烷、氟化钾、氟化钠、醋酸铅
- 主营：黄丹粉、除漆剂、红丹粉、磷酸三丁酯、除锈剂、脱塑剂、黄血盐钾、无水氟化钾、硅磷晶、硫氰酸钠
- 主营：9004-32-4、磷铁粉、9003-28-5、羟基乙叉二磷酸四钠、干燥剂、防腐剂、聚氨酯、柠檬黄、9002-89-5、9003-05-8、硅橡胶、清洗剂、8050-09-7、增湿剂、葡萄糖、9000-59-3、洗涤剂、增稠剂、脱水剂、固化剂、着色剂、碳酸镍、10028-22-5、19513-05-4、cas76-59-5、11138-66-2