Overview
Sulfamic acid is a versatile inorganic compound that serves as a safer alternative to hydrochloric acid in many industrial applications. It was first prepared in the 19th century and has since become an important industrial chemical. The compound is valued for its water solubility, stability, and effectiveness as a cleaning agent. Unlike many strong acids, sulfamic acid is non-volatile and forms water-soluble salts with most metals, making it particularly useful for descaling applications. Its molecular structure contains both amino and sulfonic acid groups, giving it unique chemical properties that bridge organic and inorganic chemistry.
Physical and Chemical Properties
Sulfamic acid appears as odorless white crystals with a density of 2.15 g/cm³. It decomposes at 205°C before reaching a boiling point, releasing sulfur oxides and nitrogen oxides. The compound is highly soluble in water (21.3 g/100 mL at 20°C), with solubility increasing with temperature. Chemically, sulfamic acid is a moderately strong acid (pKa = 1.0) that reacts with bases to form salts. It undergoes reactions typical of both amines and sulfonic acids, though its reactivity is somewhat limited by its zwitterionic structure. The compound is stable under normal conditions but decomposes when heated strongly or in the presence of certain catalysts.
Main Applications
The primary use of sulfamic acid is in industrial cleaning and descaling, particularly for removing rust and lime scale from boilers, heat exchangers, and cooling systems. Its ability to dissolve calcium carbonate and iron oxide deposits while being less corrosive to metal surfaces than hydrochloric acid makes it particularly valuable. Other significant applications include its use as a precursor in the synthesis of sweeteners (cyclamate), herbicides, and fire retardants. In the pulp and paper industry, it serves as a chlorine stabilizer and bleaching agent. Sulfamic acid also finds use in electroplating solutions, dye manufacturing, and as a standard in acid-base titrations due to its stability.
Safety and Storage
While sulfamic acid is generally safer to handle than mineral acids, it remains corrosive and requires proper safety precautions. Workers should wear chemical-resistant gloves, eye protection, and dust masks when handling the powder form. Adequate ventilation is recommended to prevent dust accumulation. For storage, sulfamic acid should be kept in tightly sealed containers in a cool, dry area away from moisture and incompatible materials (especially strong oxidizers). Bulk storage typically uses polyethylene-lined bags or fiber drums. The compound is stable under normal conditions but may decompose if contaminated or exposed to high temperatures.
B2B Procurement Guide
Industrial buyers should specify purity requirements (typically 99% minimum for most applications) and preferred packaging (25kg bags, 1000kg sacks, or bulk containers). Technical grade is sufficient for cleaning applications, while higher purity may be needed for chemical synthesis. Key procurement considerations include verifying supplier certifications, batch consistency, and delivery capabilities. Many manufacturers offer both standard and fine crystal grades. For large-volume purchases (multiple metric tons), establishing long-term contracts can secure better pricing. Buyers should also inquire about technical support and safety documentation availability.
Related Manufacturers
- 主营：四氢噻吩、二甲基二硫、一乙醇胺、对氨基苯磺酰胺、异辛醇、环丁砜、二甲基亚砜、异丙醚、环己酮、异辛烷、氟硼酸、三乙胺、正庚烷、燕化苯酚、马来酸酐、三乙醇胺、亚硝酸钠、鲁西甲酸、三氧化二锑、3-乙氧基丙胺
- 主营：处理剂、消毒剂、二甲苯、对氨基苯磺酰胺、还原剂、增湿剂、乳化剂、防腐剂、锌氯粉、氟化铵、干燥剂、吸附剂、漂白剂、杀虫剂、氟化钠、拔染剂、甜味剂、氧化镍、缓蚀剂、融雪剂、防冻液、氟化氢、氯化铵、丙二醇、分析纯、火碱烧碱
- 主营：醋酸钴、硝酸铜、氯化钴、氨基磺酸、氯化亚锡、三氯化铁、氯化铁、氟硅酸钠、氧化钴、硫化钠、丙酸钠
- 主营：全氟三丁胺、全氟三乙胺、全氟三丙胺、二甲氨基磺酰氯、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、磷酸铵、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：化学品、香精香料、试剂、二甲氨基磺酰氯、中间体、有机硅、橡胶树脂、催化剂、纳米材料
- 主营：有机原料、中间体、香精香料、磺酰胺、催化剂、有机硅、表面活性剂
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、二甲氨基磺酰氯、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、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：苯乙烯、防腐药、催化剂、磺酸胺、正丙醇、乙醇胺、抑制剂、丙三醇、衣康酸、己二胺、初油酸、防腐剂、苯甲醇、渗透剂、次氯酸、去漆剂、石油醚、抗冻剂、乙二醛、乙二醇、润滑剂、异辛醇、清洗剂、三乙胺、甲基氰
- 主营：全氟聚醚二醇、全氟三丁胺、聚硅氮烷、氨基磺酰氯、特种硅油、特种硅树脂
- 主营：聚丙烯酰胺、聚合氯化铝、片碱、氨基磺酸、纯碱、硫酸亚铁、磷酸、元明粉、乙二醇、工业盐、次氯酸钠
- 主营：二甲基亚砜、乙二醇、丙二醇、DMAC
- 主营：硼酸酐、阻聚剂、己二酸、氯化锂、发泡剂、乙二醇、醋酸铜、硅酸钠、正癸醇、新癸酸、环烷油、腰果酚、十二醇、酒石酸、碳酸锂、三甘醇、油菜酸、二甘醇、碳酸钾、甲酸钠、硅酸镁、棕榈油、6-氯嘌呤、微晶石蜡、磷酸一铵
- 主营：橡胶油、白芷油、7782-92-5、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：碳酸铵、染色助剂、分析试剂、4-二甲氨基吡啶、n-丁基苯磺酰胺、西曲溴铵、2-丙二醇、有机合成中间体
- 主营：阻燃剂、乙酸镍、乙酸镝、硫酸锂、硫酸锶、溴氨酸、香茅醇、肌氨酸、锂电池、四氢萘、磷酸铬、碳酸镁、碳酸镍、防冻剂、磷酸铝、叔丁醇、氟苯基、浮选剂、稀释剂、羟乙基、去除剂、庚二酸、除磷剂、十八烯、蛋白酶