Overview
Squaric acid is a synthetic organic compound with a unique square-shaped molecular structure, giving it its name. It was first synthesized in the 1950s and has since found applications in various industries due to its strong acidity and ability to form stable complexes. The compound is primarily used in the synthesis of dyes, pharmaceuticals, and advanced materials. Despite its simple molecular formula, squaric acid exhibits remarkable chemical properties, including high acidity and the ability to chelate metal ions. These characteristics make it valuable for specialized chemical processes and industrial applications.
Physical and Chemical Properties
Squaric acid is a white crystalline solid with a density of 1.83 g/cm³. It decomposes at temperatures around 293-295 °C, making it unsuitable for high-temperature applications. The compound is highly soluble in water and polar organic solvents like alcohols, which facilitates its use in liquid-phase reactions. Chemically, squaric acid is a strong diprotic acid (pKa1 ≈ 1.5, pKa2 ≈ 3.4), comparable to mineral acids in strength. It forms stable salts (squarates) and acts as a chelating agent for metal ions, which is useful in coordination chemistry and material science.
Main Applications
Squaric acid is widely used in the synthesis of dyes and pigments, particularly for its ability to form bright, stable colors. In the pharmaceutical industry, it serves as a building block for antiviral and anticancer agents due to its unique reactivity. In organic electronics, squaric acid derivatives are employed in the development of conductive materials and sensors. Its metal-chelating properties also make it useful in analytical chemistry for extracting and detecting metal ions.
Safety and Storage
Squaric acid is corrosive and can cause severe skin and eye irritation. Proper personal protective equipment (PPE), including gloves and goggles, should be used when handling it. Adequate ventilation is required to avoid inhalation of dust or vapors. The compound should be stored in a cool, dry place, away from light and moisture, to prevent degradation. Containers must be tightly sealed to avoid contamination and reaction with atmospheric moisture.
B2B Procurement Guide
When procuring squaric acid, verify the purity level (typically >98%) and request a Certificate of Analysis (COA) from the supplier. Reputable suppliers should provide detailed technical data sheets and safety information. For bulk purchases, consider the stability of the compound during transportation and storage. Prices vary based on purity and quantity, with bulk orders often receiving discounts. Always check supplier certifications to ensure compliance with industry standards.
Related Manufacturers
- 主营：脯氨酸甲酯盐酸盐、聚苯胺、苄基三甲基氯化铵
- 主营：橡胶油、白芷油、7782-92-5、四方酸生产厂家、pbtcaona4、艾叶油、二甲基、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：二甲基亚砜、乙二醇、丙二醇、DMAC
- 主营：全氟三丁胺、全氟三乙胺、全氟三丙胺、磷酸铵、脯氨酸、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、茚三酮、氯唑沙
- 主营：麦芽糖酸、苯氧基环磷腈、甲巯基四氮唑
- 主营：浮选油、渗透剂、抗氧剂、方酸二乙酯、呋喃树脂、抗静电剂、氨基硅油、糠酮树脂、橡胶防老剂、选矿药剂、聚硫橡胶、氧化铜活化剂、阻燃剂、乳化剂、表面活性剂
- 主营：α-氨基、联吡啶、阻燃剂、丁烯酸、十八酸、乙二酸、王浆酸、10-蒽二、二苯胺、胶黏剂、氨基芴、二苯胍、肉桂醇、异丁酮、溴化鏻、乙氧基、豆甾醇、碘乙烷、二乙醇、氟苯基、稀释剂、羟乙基、3382-63-6、氯甲酚、桂皮醇
- 主营：百里香酚、戊基黄药、矿物浮选剂
- 主营：四方酸、38870-89-2、二乙基甲酰胺
- 主营：纳米氧化铝、纳米氧化钛、纳米氧化锆、磷酸三钙、纳米氧化硅、纳米氧化锌、碳纳米管、纳米氧化钨、纳米氧化铁、纳米氧化镁、氧化铪、氧化铈、氧化钇、羟基磷灰石、纳米银粉、纳米四氧化三铁、纳米铂、纳米钯、纳米钌、纳米氧化铱、纳米氧化锑
- 主营：氢氧化钠、氢氧化钾、聚合氯化铝、硬脂酸钙、十四酸、柠檬酸、亚硝酸钠、硫酸镍、硬脂酸锌、硫酸铜、碳酸锂、焦磷酸钾、草酸、七钼酸铵、钼酸钠、冰醋酸、水杨酸、磷酸、保险粉、葡萄糖、雕白粉、二氯甲烷、活性炭、丙三醇