Overview
1,2-Propanediol, commonly known as propylene glycol, is an organic compound belonging to the alcohol family. It is a clear, odorless, slightly sweet-tasting liquid that has become indispensable in numerous industries due to its versatile properties. The compound was first described in 1859 and has since grown into one of the most widely produced glycol derivatives globally. Industrial production typically involves the hydrolysis of propylene oxide, yielding both 1,2-propanediol and its isomer 1,3-propanediol. The material's GRAS (Generally Recognized As Safe) status by the FDA for food applications has significantly expanded its use across various sectors.
Physical and Chemical Properties
1,2-Propanediol exhibits several notable physical properties that contribute to its widespread use. With a molecular weight of 76.09 g/mol, it presents as a viscous liquid at room temperature with excellent water solubility. The compound's hygroscopic nature makes it particularly valuable in applications requiring moisture retention. Chemically, 1,2-propanediol demonstrates good stability under normal conditions. It has a relatively high boiling point of 188.2°C and a low freezing point of -59°C, which explains its effectiveness as an antifreeze agent. The material's dielectric constant and dipole moment make it an effective solvent for many organic compounds, while its low toxicity profile allows for use in sensitive applications.
Main Applications
The applications of 1,2-propanediol span multiple industries, making it a truly versatile chemical compound. In the pharmaceutical industry, it serves as a solvent for oral, topical, and injectable medications. The food industry utilizes it as a humectant, solvent, and preservative in various products, particularly in baked goods and flavor extracts. Industrial applications include use as a component in antifreeze solutions, hydraulic fluids, and as a solvent in paints and coatings. The cosmetic industry values propylene glycol for its moisturizing properties in lotions, creams, and deodorants. More recently, it has gained attention as a carrier fluid in electronic cigarettes and theatrical fog machines.
Safety and Storage
While 1,2-propanediol is generally considered safe for many applications, proper handling and storage are essential to maintain its quality and prevent accidents. The compound should be stored in tightly sealed containers made of stainless steel, aluminum, or lined steel to prevent moisture absorption and contamination. Safety precautions include using proper personal protective equipment when handling, particularly eye protection and gloves. Although it has low acute toxicity, prolonged skin contact should be avoided. In case of spills, the material should be contained and absorbed with inert material. Proper ventilation is recommended in storage areas to prevent vapor accumulation, despite the compound's relatively high flash point of 99°C.
B2B Procurement Guide
When procuring 1,2-propanediol for industrial or commercial use, several factors should be considered to ensure quality and cost-effectiveness. Buyers should clearly specify the required grade, as pharmaceutical (USP), food, and technical grades have different purity standards and price points. Packaging options range from small drums (200kg) to bulk tanker loads, with prices typically decreasing with larger quantities. Reliable suppliers should provide certificates of analysis and comply with relevant industry standards. Buyers should also consider logistics factors, as the compound's hygroscopic nature requires proper transportation conditions. Current market prices fluctuate based on propylene feedstock costs and regional demand.
Related Manufacturers
- 主营：异丙醇、二甲胺、二甲苯、13、苯基氯、二甘醇、石炭酸、乙二醇、丙烯酸、仲丁醇、水溶液、羟基苯、红铅丹、氨基苯、安息油、环己醇、正丁醇、84消毒液、单乙醇胺、医用酒精、液状石蜡、邻甲苯胺、杀菌消毒、乙基三胺、出口酒精、乙烯基苯
- 主营：[]
- 主营：各类溶剂、桐油、二甲基亚砜、丙二醇、松香水、二氯甲烷、二甲基乙酰胺、三氯乙烯、乙酸乙酯、三乙醇胺、麦芽糖浆、甲酸钠
- 主营：纯甘油、乙二醇、桶装散水、丙二醇、无水乙醇、三乙醇胺、二甲基甲酰胺、无色透明液体
- 主营：[]
- 主营：还原剂、添加剂、保湿表面、丙二醇、一水柠檬酸、二氧化硫脲、污水处理剂、表面活性剂、高纯高铁酸钾、工业级三乙醇胺、十二烷基磺酸钠、工业级高铁酸钾、纸浆漂白脱色剂、十二烷基硫酸钠
- 主营：胶囊破胶剂、过硫酸铵、过硫酸钠、丙二醇、过硫酸钾、淀粉、乙二醇、乙酸钠、异丙醇、苯乙烯、石油化工、助剂原料
- 主营：航空煤油、石油醚、溶剂油、丙二醇甲醚、丙二醇乙醚、丙二醇丁醚、乙醇、甲醇、一乙醇胺、三乙醇胺、二氯甲烷、环己酮、四氢呋喃、异丙醇、环己烷、冰醋酸、甲基吡咯烷酮、二甲基乙醇胺、二价酸酯、四氯乙烯、乙酸乙酯、二乙二醇丁醚、己二酸二辛酯、二甲基甲酰胺、甲基叔丁基醚
- 主营：二甲基甲酰胺DMF、乙二醇二醋酸酯EGDA、环己酮、丙二醇甲醚醋酸酯PMA、丙二醇甲醚PM、丙二醇、二价酸酯DBE、醋酸乙酯、EPMA、正丁醇、异丙醇、聚甲氧基二甲醚DMM、二甲苯、乙二醇、甲醇、乙二醇丁醚、二甲基二硫醚、乙二醇乙醚醋酸酯、二辛酯、苯酚
- 主营：鲁西辛醇、丙烯酸、丙烯酸异冰片酯、丙二醇甲醚醋酸酯、1.2丙二醇、环氧氯丙烷、二乙二醇、二乙二醇甲乙醚、二甲基亚砜、环己胺、N-甲基吡咯烷酮、二氯甲烷、乙二醇二甲醚、二氯乙烷、苯乙烯、丙烯酸丁酯、甲基丙烯酸、丙烯酸羟乙酯、丙烯酸异辛酯、二辛酯、溶剂油、衣康酸、甲基丙烯酸甲酯、正丁醇
- 主营：丙二醇、elisa试剂盒
- 主营：elisa试剂盒、检测试剂盒、酶免试剂盒、丙二醇、通蔚生物试剂盒、elisakit
- 主营：丙二醇、elisa试剂盒、检测试剂盒、PCR试剂盒
- 主营：丙二醇、elisa试剂盒、pcr检测试剂盒
- 主营：人1、Elisa试剂盒、检测试剂盒
- 主营：丙二醇试剂盒、elisa试剂盒
- 主营：人1、检测试剂盒、elisa试剂盒
- 主营：试剂盒、酶联免疫检测试剂盒、检测试剂盒、人1、人锚定蛋白、免疫球蛋白、人醛脱氢酶、磷脂酶域蛋白、人乙醇脱氢酶、寡聚化域蛋白、抗突触核蛋白、人层粘连蛋白、易位断点蛋白、人特异性蛋白、病毒样核蛋白、诱导反应蛋白、突触关联蛋白、人动力蛋白胞浆、前列腺素还原酶、人突触囊泡蛋白、溶酶体辅助蛋白、人血管抑制蛋白、磷脂酰肌醇聚糖
- 主营：Elisa试剂盒、生化试剂盒、Pcr试剂盒、丙二醇、细胞、抗体
- 主营：elisa试剂盒、生化试剂盒、pcr检测试剂盒、3丙二醇、细胞
- 主营：间苯二甲胺、4-叔丁基苯基硼酸、硫化砷、1-硫代甘油、己二酸双(2-丁氧基、808洗涤剂胰加漂T、N-二甲基乙二胺、增甘膦、N-甲基烟酰胺、富马酸、霜脲氰、顺式-2、6-二甲基、氧化铋、三甲氧基硅烷、紫外线吸收剂、八钼酸铵、4'-二羟基二苯、十二烷基苯磺酸钠、聚乙烯醇、邻苯二甲酸丁苄酯、甲基环戊烯醇酮