The color of marine diesel is usually related to its production process and storage conditions. The color of diesel can vary from colorless to dark brown, and marine diesel appearing red may have the following reasons:
Additives in the processing: During the production process of diesel, certain additives may be added to improve its performance, such as antioxidants, stabilizers, etc., which may change the color of the diesel.
Storage conditions: Diesel may undergo slight oxidation reactions if exposed to oxygen or other substances in the air during storage, leading to a change in color. In addition, diesel stored for a long time may gradually change color due to natural aging.
Standards in specific regions: In Hong Kong, the government adds a red dye to diesel to distinguish between diesel used by vessels for maritime operations and diesel used by land vehicles, turning it purple-red, known as “red oil.”
Quality issues: If diesel is abnormally deep red or dark brown in color, accompanied by a strong odor, it may be due to the presence of more impurities or unqualified components in the diesel, which may not meet usage standards.
It is important to note that the color of diesel is not the only criterion for evaluating its quality. Other indicators such as odor, transparency, and relevant chemical analysis results should also be considered. If you need more information about diesel quality, it is recommended to consult professional energy suppliers or industry experts.