Corrosion by low-molecular-weight organic acids
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“In the \"GBT 42594-2023 Guidelines for Classification of Media Hazards in Pressure Equipment\", both methanol and xylene are classified as causing corrosion by low-molecular-weight organic acids. Search for \"GBT 30579-2022 Identification of Damage Modes in Pressure Equipment\”; corrosion caused by low-molecular-weight organic acids is defined as \"uniform or localized corrosion that occurs when metal comes into contact with low-molecular-weight organic acids such as formic acid, acetic acid, oxalic acid, benzoic acid, etc., excluding other organic acids like naphthenic acid which are specifically listed in this standard.\" ” Do methanol and xylene cause this kind of corrosion?
Methanol and xylene are not low-molecular-weight organic acids themselves, and they generally do not cause corrosion caused by low-molecular-weight organic acids. There may be misunderstandings or classification errors in the specific documents and categories. Methanol and xylene should not be classified as substances that cause corrosion by low-molecular-weight organic acids. .
It’s strange; according to the \"GBT 42594-2023 Guidelines for Classifying the Hazard of Media in Pressure Equipment\", both methanol and xylene are classified as causing corrosion by low-molecular-weight organic acids. Where does it come from? Is it wrong?