Titrate 1 ml of oil mixed with 10 ml of ethanol with 0.01N KOH solution to get the neutralization volume of KOH and stiotiometrically calculate the equivalent acid value.
Vivek Kumar,
Assistant Professor,
Engineering Chemistry,
St. Vincent Pallotti College of Engineering and Technology,
Nagpur, Maharashtra, India.
Please provide me the formulaes for calculating AV values. John Price
A measure of the amount of free acid in a fat. it is equal to the amount of KOH ( in milligram) that is needed to neutralise this acid
You can purchase pH strips at any fish store, which will tell you by color coding if a substance is closer to an acid or base/how strong it is on either end
Lubricating oil is NOT volatile.
No, lubricating oil does not dissolve in water. Because water is very polar and lubricating oil is nonpolar, it is not energetically favorable for oil to dissolve in water. The reasoning behind this is that water's strong hydrogen bonds must be broken in order for the oil to dissolve, and because only weaker bonds are formed in the process, it takes too much energy for this process to occur.
It gives information about age of oil sample, also it signifies due to attack of atmospheric oxygen, hot moist air or microorganisms how much generation of free fatty acid has taken place leading to rancidity. Pishawikar S.A.
Petrol
Heat capacity charts for base oil
ACID VALUE=Normality OF KOK or NaOH*5061/w
Acid attacks metal and acidic oils should be kept well away from parts requiring lubrication.
Peroxide is used to determine the acid value of vegetable oil using primary standard. Oils with high degree of unsaturation are most susceptible to autoxidation.
Lubricating oil is NOT volatile.
Lubricating Oil Is A Thick Fatty Oil (Especially One To Be Used For Lubricating Factory Machinery)
The standard acid value of peanut/grondnut oil is about 3.5 to 4.0%
The purpose of checking the acid value of the lubricant oil is that it determines the efficiency.
It is self-lubricating
The acid value of coconut oil should be approximately 1.0 - 2.0%. Coconut oil can be found in most grocery stores.
No, the lubricating oil is a liquid
It was not invented. In fact the Romans had used it so it is nothing new.
yes