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Sodium Stearate (NaSt) is produced in Stabilchem (M) Sdn. Bhd. via the fusion process between palm-based Fatty Acid (FA) and Sodium Hydroxide (NaOH). NaSt has a multitude of applications ranging from lubricating agents in wire drawing to emulsifying agents in the food industry. NaSt is also beginning to be used as a gelling agent in gel-based air fresheners. It is required that the NaSt used in the air freshener produce a translucent gel. In order to fulfill this industrial requirement, NaSt has to be tested for its performance in gel-based air fresheners. To do this, samples of NaSt with different chemical and physical properties are used to produce air fresheners. The air fresheners produced are then measured for transparency. The object of this project is to study the effect of chemical and physical properties of NaSt on gel air freshener transparency and to recommend the optimum NaSt parameters to be used in air fresheners. For this project, only the NaSt produced by Stabilchem (M) Sdn. Bhd. were used. To measure the gel transparency, a spectrophotometer called Hunter Lab Meter was used. Only three parameters were studied in this project, namely the effect of Free Fatty Acid (FFA) value and moisture content of the NaSt as well as the heating temperature when producing the air freshener. All the sample analysis laboratory test methods are that as stated in Stabilchem's Quality Control department. The air freshener formulation used was provided by a client of Stabilchem under confidentiality and trust. Therefore, the detailed formulation is not provided in this report. Among the components in the air freshener are D-Limonene, NaSt, Nonyl phenol and ethanol. After conducting this investigative project, it was found that gel air freshener transparency decreases slightly with increasing FFA values. The moisture content of NaSt has insignificant effect on gel transparency. Last but not least, gel transparency decreases as heating temperature is increased. From these findings, it can be concluded that Stabilchem's NaSt are capable of producing air freshener gels with satisfactory clarity as long as its chemical and physical properties are within the specifications set by the QC department. To ensure that the gel producedis always clear, the air freshener should be produced in a clean and dry area. Additives such as fragrance and colour can cause cloudiness. Therefore, compatible colouring and fragrance should be used in correct amounts to preserve the clarity ofthe air freshener gel.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Process System Engineering
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:23
Last Modified: 25 Jan 2017 09:47
URI: http://utpedia.utp.edu.my/id/eprint/7167

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