Urgent help: What does HOPR mean in Chinese?
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In the customer’s acetic acid parameters, an HOPR value is listed, with the unit being ppm. Could someone please tell me what type of parameter this is?
I guess it might be indicators related to impurities such as the content of heavy metals. Since you said it’s about the acetic acid levels for your customer, why not just ask your customer directly?
It refers to the \"chelates\" that are produced during the manufacturing process; their composition is complex. However, **strict regulations apply regarding their concentration, which must not exceed a certain ppm level**
This indicator is not included in the metrics of acetic acid plants that hold influence both domestically and internationally; thank you for your help!
Propionic acid (HOPr) is also known as propionic acid; its molecular formula is C3H6O2, its structural formula is CH3CH2COOH, and its molecular weight is 74.08. Colorless liquid with an irritating odor. Melting point -21.5°C. Boiling point 141.1°C, density (20/4°C) 0.992 g/cm3. It is miscible with water and forms an azeotrope with water at 99.98°C (containing 17.7% propionic acid). It can also form an azeotropic solution with toluene. Soluble in ethanol, ether, chloroform, etc. It can be used to prepare propionate fragrances, and as a solvent and plasticizer for cellulose nitrate. It can be obtained by the oxidation of propionaldehyde or propanol, or by the reaction of ethanol with carbon monoxide in the presence of boron trifluoride as a catalyst ； It can also be produced by the reaction of ethylene, carbon monoxide, and water vapor at high temperature and certain pressure, with phosphoric acid as a catalyst.