0.8kg/dm.

The density of peanut oil is: 0.8kg/dm3. The greater the density of peanut oil, the more other impurities it contains. Peanut oil is composed of 20% saturated fatty acids and 80% unsaturated fatty acids, mainly oleic acid, linoleic acid and palmitic acid. It has an iodine value of about 80 to 110. It is a dry oil with a light yellow and transparent color and a fragrance. It is a high-quality cooking oil.

Storage characteristics

Under normal storage conditions, peanut oil will undergo an auto-oxidative rancidity process. The changes are: the auto-oxidation process is related to the season. If Start storing in winter. Low temperature can effectively delay the action of lipase and oxygen. As the seasons change and the temperature rises, when the temperature is 15-30°C, on the one hand, due to the action of lipase, the oil is hydrolyzed and the acid value is reduced. On the other hand, the infiltration of oxygen in the air will promote the oxidation of oil and form hydroperoxides.

In summer, the room temperature and storage tank temperature exceed 30℃. If it is stored in an open-air oil tank or open-air storage yard, it will be exposed to sunlight every day. In this case, environmental factors will promote the oxidation process of the oil. accelerate.

Especially in sunlight, under the action of ultraviolet rays or metal catalysts, when the radiation temperature exceeds 50°C, peroxides and hydroperoxides will further decompose and then undergo molecular rearrangement into aldehydes. , ketones, which make stored oil rancid.