PPT - Soap and Detergent Chemical Engineering Notes | EduRev

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Chemical Engineering : PPT - Soap and Detergent Chemical Engineering Notes | EduRev

 Page 1


SOAP 
& 
DETERGENT       
Nur Syahirah Abdul Karim Groups’ 5ST2 2014
Page 2


SOAP 
& 
DETERGENT       
Nur Syahirah Abdul Karim Groups’ 5ST2 2014
INTRODUCTION
THE MEANING OF SOAP AND DETERGENT
PREPARATION OF SOAP AND DETERGENT
CLEANSING ACTION OF SOAP AND DETERGENT
EFFECTIVENESS OF THE CLEANSING ACTION OF
SOAP AND DETERGENT 
Page 3


SOAP 
& 
DETERGENT       
Nur Syahirah Abdul Karim Groups’ 5ST2 2014
INTRODUCTION
THE MEANING OF SOAP AND DETERGENT
PREPARATION OF SOAP AND DETERGENT
CLEANSING ACTION OF SOAP AND DETERGENT
EFFECTIVENESS OF THE CLEANSING ACTION OF
SOAP AND DETERGENT 
SOAP
IS THE  SALT FORMED WHEN A 
FATTY ACID IS NEUTRALISED BY 
AN ALKALI
Page 4


SOAP 
& 
DETERGENT       
Nur Syahirah Abdul Karim Groups’ 5ST2 2014
INTRODUCTION
THE MEANING OF SOAP AND DETERGENT
PREPARATION OF SOAP AND DETERGENT
CLEANSING ACTION OF SOAP AND DETERGENT
EFFECTIVENESS OF THE CLEANSING ACTION OF
SOAP AND DETERGENT 
SOAP
IS THE  SALT FORMED WHEN A 
FATTY ACID IS NEUTRALISED BY 
AN ALKALI
SOAP IS A SODIUM SALT IF THE ALKALI USED IS SODIUM HYDROXIDE
SOAP IS A POTASSIUM SALT IF THE ALKALI USED IS POTASSIUM
HYDROXIDE
THE GENERAL FORMULA- RCOONa or RCOOK
EXAMPLE OF SOAP- 1) SODIUM PALMITATE, CH3(CH2)14COOH-Na+
2) SODIUM STEARATE, CH3(CH2)16COOH-Na+
3) SODIUM LAURATE, CH3(CH2)10COOH-Na+
Page 5


SOAP 
& 
DETERGENT       
Nur Syahirah Abdul Karim Groups’ 5ST2 2014
INTRODUCTION
THE MEANING OF SOAP AND DETERGENT
PREPARATION OF SOAP AND DETERGENT
CLEANSING ACTION OF SOAP AND DETERGENT
EFFECTIVENESS OF THE CLEANSING ACTION OF
SOAP AND DETERGENT 
SOAP
IS THE  SALT FORMED WHEN A 
FATTY ACID IS NEUTRALISED BY 
AN ALKALI
SOAP IS A SODIUM SALT IF THE ALKALI USED IS SODIUM HYDROXIDE
SOAP IS A POTASSIUM SALT IF THE ALKALI USED IS POTASSIUM
HYDROXIDE
THE GENERAL FORMULA- RCOONa or RCOOK
EXAMPLE OF SOAP- 1) SODIUM PALMITATE, CH3(CH2)14COOH-Na+
2) SODIUM STEARATE, CH3(CH2)16COOH-Na+
3) SODIUM LAURATE, CH3(CH2)10COOH-Na+
FORMED FROM NEUTRALIZATION BETWEEN:
FATTY ACID + ALKALI
FOR EXAMPLE: SODIUM PALMITATE
CH3(CH2)14COOH + NaOH
CH3(CH)14COONa + H2O
PALMITIC ACID SODIUM         
HYDROXIDE
SODIUM PALMITATE
SOAP
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