Can the color be removed from industrial hydrochloric acid after distillation?
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Industrial hydrochloric acid is yellow; can the color be removed after distillation?
Once you find out the reason for its yellow color, the other issues become irrelevant. In chemical production, iron-based materials are generally used, and hydrochloric acid turns yellow mainly due to the presence of iron ion impurities (ferric chloride). If there is no contact with iron ions throughout the production process, then yellowing should not occur.
Adsorption filters can be used, as well as molecular sieves, to remove color. It is possible to discuss the specific choice with the manufacturer. Last edited by Albertlu on 2009-3-29 20:11.]
It does not come into contact with iron, and it is colorless after distillation.
The yellow color is definitely caused by metal ions; these ions can be removed using macroporous adsorption resins, thereby eliminating the color. LSD-396 from Xi’an Lanxiao has been used in more than a dozen projects related to iron hydrochloride in China, with very good results. The resin lasts for a long time – 1 to 2 years – making it cost-effective. Its operation is simple as well. You can get in touch with them at: call: 13572567283