Caprolactam is an organic compound with C6H11NO. It is widely used in gears, bearings, pipe materials, medical equipment and electrical insulation materials.

Polyacrylamide is relatively stable to heat. Its solid is softened at 220 ~ 230℃, and its aqueous solution is degraded at 110℃,It can be dissolved in water in any proportion, and the aqueous solution is uniform and transparent. After long -term storage, the viscosity of the solution will be reduced due to the slowly degradation of the polymer, especially when the storage and transportation conditions are poor. Polyacrylamide is used as lubricant, suspending agent, clay stabilizer, oil repellent, water reducing agent and thickener. Wide application is an extremely important oilfield chemical.

Potassium dihydrogen phosphate (chemical formula KH2PO4) is a high concentration phosphorus and potassium compound fertilizer, P2O5 content of 52%, K20 content of 34%. Small hygroscopicity, good physical properties, easy to dissolve in water, at 20℃ per 100 ml water can dissolve 23g, aqueous solution is acidic

Pure ammonium sulfate is white crystal, hot to 100℃ began to decompose into ammonia and ammonium bisulfate, byproducts with yellow or gray, hygrometric small, not easy to caking, so it is easier to preserve, and more soluble in water, not soluble in ethanol and acetone.

Propanoic acid is a three-carbon carboxylic acid, a short-chain saturated fatty acid with the chemical formula CH3CH2COOH. pure propanoic acid is a colourless, corrosive liquid with a pungent odour.

Silica is an acidic oxide, and the corresponding hydrate is silicic acid (H₂SiO₃). Silica is one of the most important compounds of silicon. The natural silica that exists on the earth accounts for about 12% of the mass of the earth's crust, and its existing forms are divided into two categories: crystalline and amorphous, collectively referred to as silica

Dimethylformamide (DMF) is a colorless and transparent liquid, which is miscible with water and most organic solvents.Pure dimethylformamide has a special odor, while industrial-grade or deteriorated dimethylformamide has a fishy odor.It is a common solvent for chemical reactions.

​Cyclohexane: an organic compound with the chemical formula C6H12, is a colorless liquid with a pungent odor, insoluble in water, soluble in most organic solvents such as ethanol, ether, benzene, acetone, etc.

Oxalic acid, also known as oxalic acid, is the simplest binary acid, molecular HOOCCOOH. There are only two carbon atoms in the molecules. It exists widely in nature, especially in plants, such as herbal plants, rhubarb plants, ravioli grass, spinach, etc., and often exists in the form of potassium salt. In the urine of humans or carnivores, ethic acid exists in the form of calcium salt or grassic acid Hooconhconh2. In addition, kidney or bladder stones also contain calcium oxalate.