How to neutralize labsa

How to neutralize labsa

This test for studying the neutralization of Linear Alkyl Benzene Sulphonic Acid (LABSA) with Caustic Soda (50% concentration i.e. 150kg water and 150 kg NaOH) in the process of slurry making for the detergent industry. The starts by charging water (900 kg) into the reactor and then adding caustic soda (300 kg) thereby diluting it to 10%. Then LABSA (1050 kg) is added for neutralization reaction. The product is LAS salt and water.

The reaction is as follows:

CH3 (CH2)11C6H4SO3H + 3NaOH =====> CH3 (CH2)11C6H4SO3Na + 3H2O

It is required that the resulting paste from the above reaction contains no acid which means that all of the LABSA should be consumed (making it the limiting reactant). However, stoichiometric ally NaOH is the limiting reactant according to the provided masses.

It should be noted that water is added to make up the quantity of NaOH, so that it is enough to react with the supplied LABSA. But adding water does not convert it into NaOH which means that the quantity of NaOH remains the same (i.e. 150 kg).

Usage labsa:

Linear alkylbenzene sulphonic acid can be neutralized with caustic soda (NAOH) to form sodium.

Alkylbenzene sulphonate-an extensively applied anionic surfactant.

LABSA is not inflammable substance and can dissolve in water, but not in organic solvent.

LABSA is quite absorbent and its biodegradability is above 90%.

Linear alkylbenzene sulphonic acid is extensively applied anionic surfactant.

Labsa is raw material for detergent industry characterized by detergency, foam, moisture, and emulsion and dispersing.

You want know chemical reaction of labsa and soda ash?

LABSA reacts with sodash to give the product of sodium salts of labsa and CO2 evolved and water in moisture content.

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