How to identify the PH of acetic acid? Check your Acetic acid if its okay or not.

Acetic acid is the most important thing in Denim Wash. Acetic acid is necessary for controlling the PH of final washed garments and also neutralizing the garments after caustic soda application (cleaning) on denim. Also acid using turns the denim color to Reddish look. 

 

Acetic acid is colorless transparent liquid which chemical symbol is CH3COOH. Chemical supplier supplies the acid in different name, like- Green Acid/ Ross Acid -N Liquid/ Etc.

Picture of a gallon of 20 Kg' acetic acid of 99.9% pure.

Here , we will discuss How to identify the PH of the 99.9% pure acetic acid. 

To identify the acid, it needs to find the concentration of 0.1 Molar Acetic acid. Which can be made through this way :-

0.1 Mole Acetic acid = 6.005 gram acid = 5.72 ml of glacial Acetic acid.

Now, take - 5.72 ml of 99.9 % pure Acetic acid and mix the acid slowly in 1 Liter of clean water. 

Then , Measure the PH of the solution after dilution. The ph of the solution will be - PH = 2.88. 

 (Remember, 1N = 1 molar)
 (Remember, - Density of Acetic acid is 1.049 gram/ mL)
 (Remember, - the concentration of glacial acetic acid  is roughly 0.01747 mol/mL = 17.47 M)

i.e - if you have a 80% solution , you need 7.15 ml of acetic acid to prepare 0.1 molar concentration of the acetic acid. 

 You may use regular handheld / bench-top type PH meter to identify the PH in decimal number because litmus paper will not give you the exact result.


Thanks for reading.

  Best regards,

K M Zahidur Rahman
Exectutive- R&D
Hameem Group