What are the reasons for the low ultraviolet transmittance of ethylene glycol products?
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What are the reasons for the low ultraviolet transmittance of the product? A company’s ethylene glycol product did not meet the standards for high-quality products, as its ultraviolet transmittance was low. The detection value at 220nm is 75, the detection value at 275nm is 82, and the detection value at 350nm is 98.
Of course, there are impurities with ultraviolet absorption in the product.
Wait for experts from Tongliao Jinmei to provide an answer.
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Analyzing the level of light transmittance can indicate what substances are present and how to deal with them
This post was last edited by anglyerleon on 2017-6-29 at 10:52. Is this related to petrochemicals or coal chemical industry? When we conducted impurity removal experiments using resins at Hualu Hengsheng, the value at 220nm did not meet their requirements, while they were satisfied with the values at 275nm and 350nm. The transmittance is only 65-68% at 220nm, over 93% at 275nm, and over 99% at 350nm. The other party said that the impurities involved are quite complex, with alcohols, aldehydes, esters, and hydrocarbons being the most common ones.
Hualu Hengsheng’s process is from Shanghai Wu Zheng