SAP values are the numeric values that allow you to calculate the precise amount of sodium hydroxide (NaOH) or potassium hydroxide (KOH) required to fully saponify a given weight of oil/s .
What does SAP value mean in soap making?
SAP values are the numeric values that allow you to calculate the precise amount of sodium hydroxide (NaOH) or potassium hydroxide (KOH) required to fully saponify a given weight of oil/s .
What do you mean by SAP value?
Saponification value is defined as the amount of potassium hydroxide (KOH) in milligrams required to saponify one gram of fat or oil under the conditions specified (AOCS Method Cd 3–25 and AOCS Method Cd 3c–91).
Why is SAP value important?
The higher the saponification value, the lower the fatty acids average length , the lighter the mean molecular weight of triglycerides and vice-versa. Practically, fats or oils with high saponification value (such as coconut and palm oil) are more suitable for soap making.
How do you use values in SAP?
Once you have the SAP value for each oil in your formula, multiply the amount of each oil by its SAP value . This will give you the amount of caustic soda that you will need for each oil. Then add up all the amounts of caustic soda, and this will be the amount needed to turn ALL the oils into soap.
Why is saponification value important?
Saponification is important to the industrial user for it helps to know the amount of free fatty acid that is present in a food material . The quantity of free fatty acid can be distinguished by determining the quantity of alkali that must be added to the fat or oil to make it neutral.
How do you calculate saponification value of soap?
Divide the amount of lye by 0.3 and then subtract the amount of lye from the result . For example, to make just over 2 pounds of olive oil soap, measure 32 ounces of olive oil and 4.33 ounces of lye because 32 ounces of olive oil × 0.1353, which is the saponification value for olive oil, = 4.33 ounces of lye.
What is RM value?
The RM value is the amount of 0.1 N alkaline solution needed for the neutralization of volatile fatty acids by saponification, acidification and steam distillation of 5 g fat (Sözbilir & Bayşu, 2008).
What is the principle of saponification value?
Principle: Saponification value is defined as the number of milligrams of KOH required to completely hydrolyse (saponify) one gram of the oil/fat . In practice a known amount of the oil or fat is refluxed with excess amount of standard alcoholic potash solution and the unused alkali is titrated against a standard acid.
What is acid and saponification value?
July 20, 2020 Posted by Madhu. The key difference between acid value and saponification value is that acid value gives the mass of potassium hydroxide that is required to neutralize one gram of a chemical substance whereas saponification value gives the mass of potassium hydroxide required to saponify one gram of fat.
What is unsaponifiable?
Medical Definition of unsaponifiable
: incapable of being saponified —used especially of the portion of oils and fats other than the glycerides unsaponifiable fractions such as steroids or vitamin A.
What is a high saponification value?
A high saponification value indicates that the sample has a shorter fatty acid chain and a lower molecular weight . A low saponification value indicates that the sample has a longer fatty acid chain and a higher molecular weight.
What is saponification example?
Saponification is commonly used to refer to the reaction of a metallic alkali (base) with a fat or oil to form soap. Example: Ethanoic acid reacts with alcohols in the presence of a conc . sulphuric acid to form esters. C 2 H 5 OH + CH 3 COOH → CH 3 COOC 2 H 5 + H 2 O.
What is the result of saponification?
As a result of the Saponification process, the fatty acids are hydrolyzed in presence of an alkali so as to form salts of alkali and alcohol . Upon cooling of the dissolved mixture, solid soap was observed the end of the process. ... A clear, pale pink solution indicates good results.
Does saponification value affect the quality of soap?
Saponification value is also used in checking adulteration. The larger the saponification number, the better the soap making ability of the oil [3]. Higher saponification value for triglyceride indicates higher medium chain fatty acids [7].
What is soap value?
The saponification value is the amount of base required to saponify a fat sample . Soap makers formulate their recipes with a small deficit of lye to account for the unknown deviation of saponification value between their oil batch and laboratory averages.
