Diluting Concentration of Hydrogen Peroxide (Food Grade) to Required Concentration

Diluting Concentration of Hydrogen Peroxide

Diluting Concentration of Hydrogen Peroxide (Food Grade):

Firstly, let us try understand various ways in which concentration of substance/s are presented. The various ways to express concentrations are:

  1. % w/w (Percentage Weight per Weight): While preparing w/w solutions, weight of each constituent (Chemical) is used. Let us say a 100 Grams of Solution C is made by adding 10 Grams of Chemical A (Solute) to 90 Grams of Chemical B (Solvent). Now, this gives 10% w/w Solution of Chemical A.
  2. % w/v (Percentage Weight per Volume): Now, we use w/v calculations when a Solid Solute is dissolved into The Liquid Solvent. Now, assuming NaCl would completely dissolve into – within the molecules of Water, so, if I dissolve 10 Grams NaCl into 100 mL of water, I have 10% w/v solution of NaCl.
  3. % v/v (Percentage Volume per Volume): Now, Mostly this measurement is used, when both ‘The Solute’ and ‘The Solvent’ are Liquids. Let us say,
  • I add 30 mL of H2SO4 into 70 mL of Pure Distilled Water, I have 30 mL in a total volume of 100 mL; Thus I could call this solution at 30 % v/v.
  • I add 750 mL Ethanol to 250 mL Pure Distilled Water (750 mL in total volume of 1000 mL), I have Ethanol Solution at 75 % v/v concentration.

Few Miscellaneous Examples:

  1. Volume per Volume To Weight per Volume:
  • I wish to convert “Ethanol Solution at 75 % v/v concentration” to “% w/v Concentration”.

Density of Ethanol = 0.789 g/ml.

  • Mass of 750 mL Ethanol = 750 * 0.789 = 591.75 grams
  • 75 grams diluted in Pure Distilled Water to make 1000 mL Solution
  • This Yields a Solution of Ethanol at 591.75/1000*100 (or 59.1 % w/v concentration).
  1. Now suppose I add 35 grams NaCl to Pure Water such as to make a total volume of 100 mL, the final NaCl solution would be 35 % w/v.
  1. If I dilute “100 mL Pure 35 % H2O2” by adding Pure Distilled Water to make a total volume of 1000 mL Solution, I then get H2O2 at a concentration of 10 % v/v.

Now, let us go through two ways in which concentration of H2O2 is altered-diluted…

First Way:

1 part 35%   +     1 part water   =   2 parts 17.5%
2 parts 17.5%    + 2 parts water = 4 parts 8.75%
4 parts 8.75%    + 4 parts water  = 8 parts 4.375%
8 parts 4.375%  + 8 parts water   = 16 parts 2.1875%

So we may say, to 100 mL 35% H2O2 we add 1500 mL to get 2.1875% H2O2

Second Way:

Now, 50% Conc. H2O2 implies that in a 100 mL Solution, we have 50 mL H2O2, and 50 mL of Distilled Water.

Equation to use for concentration conversion is:

  1. x /(y + z) = w, where
  • x = Amount of H2O2 in the initial amount of Concentrated Solution, which needs to be diluted to required concentration. So if we have taken 100 mL of 50% Conc. v/v, amount of H2O2 initially in the solution is 50 mL,
  • y = Initial amount of concentrated solution (In this case we have taken 100 mL of 50 % Conc. H2O2 Solution, so y = 100),
  • z = This is the assumed amount of water to be added to Initial Solution to get the final solution of required concentration and
  • w = Required final concentration of H2o2 Solution.
  1. An Example:
  • Let us say we wish to dilute 100 mL (y = 100) of 35% Conc. H2O2 to 3 % Conc. (=> w = 3% which we would write as w = 0.03),
  • Let ‘z’ be the amount of water that needs to be added to get the required concentration,
  • So the equation we get is: 35/(100 + z) = 0.03; This yields the value of ‘z’ to be 1066 mL, which is the final resultant amount of 3% conc. H2O2 Solution,
  • Thus, we need to add 1066 mL of Pure Distilled Water to Initial 100 mL of 35% Conc. solution of H2O2 to get 1166 mL of 3% concentrated v/v H2O2 Solution.

My Choice for Food Grade H2o2:
Self-Procured-Diluted Further to 3-5 % Conc. Food Grade H2O2-Visit Web-page “Our Health Kit

Legal Disclaimer: The information in this article is not a Medico-Legal advice. Use it at your own risk. Although I do my best to give you accurate and useful information, you should consult an appropriate Medical Professional before Trying out any of the above Information.

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Author: Manoj

My Research on Ancient (But Highly Intelligent & Advanced) Studies-Ayurveda & So Called Modern Studies (!!) has brought me literally back from Dead! Quit my sailing job in 2009 due Serious Medical Conditions (Severe Vision Loss, Severe Haemorrhoids, Severe Depression...), But few incidences (Rajiv Dixit CD's, Fatal Ailments Getting Cured at High End Ayurveda Ashrams, Khongress Leaders Going to Ayurveda Ashram!!!!!!!) Prompted me towards 'Dedicated & Devoted Studies of The Greatest (Ancient-Original) Medical Science-Ayurveda'.