What is Hydrogen peroxide: Definition and 51 Discussions

Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic. Concentrated hydrogen peroxide, or "high-test peroxide", is a reactive oxygen species and has been used as a propellant in rocketry. Its chemistry is dominated by the O–O bond.
Hydrogen peroxide is the simplest peroxide (a compound with an oxygen–oxygen single bond). It slowly decomposes in the presence of light. Hydrogen peroxide is typically stored with a stabilizer in a weakly acidic solution in a dark colored bottle. Hydrogen peroxide is found in biological systems including the human body. Enzymes that use or decompose hydrogen peroxide are classified as peroxidases.

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  1. S

    Tca mixed with hydrogen peroxide

    A company has made a skin peel made with 33% tca 5% kojic acid and 62% hydrogen peroxide. But you don’t peel. I want to make my own since I can’t afford the product. How do I do it
  2. J

    Degradation of Accelerated Hydrogen Peroxide

    I started fostering kittens during the pandemic. A very useful veterinary disinfectant that I make use of is accelerated hydrogen peroxide. It is sold under the brand name "Rescue". In its concentrated form it has a shelf life of about 2 years. It's kind of expensive. Typically a dilution of a...
  3. neilparker62

    Reaction of Potassium Permanganate and Hydrogen Peroxide solution

    With the peroxide solution in excess, we added 10ml vinegar and 10ml of different concentrations of permanganate and timed the reaction. The basics are that the more concentrated the permanganate , the faster the reaction. I would just like to know what the theoretical relationship is between...
  4. Y

    Is it possible to ionize hydrogen peroxide at home?

    Hi, I wonder maybe anyone can help me. I’m trying to ionize hydrogen peroxide mist with the help of a high voltage electrical filed / corona arc. And I wonder if there is a way to know if I ionize the hydrogen peroxide mist at all? And if so, how much do I ionize it (compering to deferent...
  5. B

    Is hydrogen peroxide effective against the corona virus?

    If oxygen is effective against bacteria virus and cancer why isn't it used against coved-19? DMSO is known to bond with certain substances and could carry HP into the blood stream and kill off COVID-19.
  6. A

    How Much Vanish is Needed to Achieve Bacteriostatic and Fungicidal Effects?

    I understand hydrogen peroxide has bacteriostatic and fungacidal properties at a concentration of 0.88 mol/l however I am struggling to establish how much something like vanish containing 30% sodium percarbonate (30g per 100g of product?), would be needed to provide that concentration and...
  7. Roy S Ramirez

    Adjusting the pressure drop in an injection plate

    Hello everybody, I'm designing a gas pressure feed system for a hydrogen peroxide - ethanol rocket engine, and after analyzing the devised injection plate, I noticed it is very sensitive to the propellants' pressure drops and discharge coefficients. Once the plate is manufactured, the only...
  8. NTL2009

    Hydrogen Peroxide cleaned burnt sugar from my pan

    I did something really stupid, and walked away from a sugar solution I was heating on the stove (4 parts water, 1 part table sugar for humming bird feeders). I got distracted, and the sugar was burnt onto the pan, carbonized, really bad. Some came off in chunks, but a thick layer adhered to the...
  9. Muddy37

    Converting sodium percarbonate to hydrogen peroxide

    I noticed a previous thread on the above subject in this forum. For several years now, I have used 30% concentration hydrogen peroxide mixed with a few drops of ammonia to very great effect* for dealing with blood stains on cotton fabrics (on sheets—a recurring problem for me) by soaking the...
  10. G

    Zinc+Iron+Acetone+Hydrogen Peroxide

    When I added a zinc plated iron ball into the acetone-peroxide solution, they zinc started bubbling. The solution turned whitish. Then after leaving overnight it became grayish with orange red foam on top
  11. S

    How to test the concetration of hydrogen peroxide?

    How can i test the concentration of h2o2?
  12. B

    Volume of Oxygen Liberated from Hydrogen Peroxide

    Homework Statement Hydrogen peroxide breaks down easily to give water and oxygen as follows: 2H2O2(aq)----> 2H2O2(l) + O2(g) Bottles of hydrogen peroxide are sometimes labelled as 10 volume as well as 3%. This means the volume of oxygen that can be liberated is 10 times the volume of the...
  13. Theoden

    Solving the Mystery of White Crusty Substance After H2O2 Use

    Hi, I have just concentrated some H2O2 from a diluted 3% concentration. I used it on a copper scrubbing pad earlier to test how well it would oxidize; but now there is a white, crusty substance where the H2O2 used to be. I then tested it on different surfaces, but every time it dries I get the...
  14. Namkceis

    Creating Different Concentrations of Hydrogen Peroxide

    < Mentor Note -- thread moved to HH from the technical forums, so no HH Template is shown > The experiment I'm trying to do can be found in the attachment below. Prepare 20 mL solutions of hydrogen peroxide in the following concentrations: 0%,0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0% hydrogen...
  15. L

    Probe for Hydrogen Peroxide residue analysis

    Hi everyone, I've been reading articles and looking at many websites for methods to measure hydrogen peroxide residue concentration in lake water, waste water and ocean water as well as in cell extract in situ . But I'm not satisfied. sometimes they seem too complicated and may require a lot of...
  16. A

    Catalyser of hydrogen peroxide

    Hello fellow scientists! I'm confronted to this conundrum: I've been asked to find which substance present in blood is the catalyser of H2O2: -MnO2 -KMnO4 -FeCl3 -Fe(NO3)3 I've thought about it for a long time. However, it is said that MnO2 is a catalyser of H2O2 online. Then, I have seen...
  17. B

    Iodide Oxidation by Hydrogen Peroxide

    In my chemistry lab we prepared the following solutions: Buffered Iodide Solution 25 mL acetic acid/sodium acetate buffer 6mL of 0.5 % starch solution 6 mL of 1.0M KI fill to the 250 mL mark with distilled water 0.025M Thiosulfate Solution 5 ml of 1 M Na2S2O3 fill to the 200 ml mark...
  18. B

    Reaction between Copper, Hydrogen Peroxide, and Vinegar

    Hey there PF, I'm trying to determine the reaction equation for a little home experiment I've been conducting. The setup is very minimal: copper metal in a solution of 3% H2O2 and 5% CH3COOH. In reality, I'm probably missing something fairly straightforward. The reaction occurs very...
  19. mishima

    Hydrogen peroxide/ sulfuric acid mixture

    Hi, I'm not sure what I just created. First I mixed sodium iodide with hydrochloric acid. Then to that I added a hydrogen peroxide/ sulfuric acid mixture (thinking it was just hydrogen peroxide). It seems a black precipitate is forming. I was trying to make potassium iodide using an...
  20. G

    What will be the pressure inside a small hydrogen peroxide rocket engine?

    Hello, I am designing a small hydrogen peroxide rocket engine. Hydrogen peroxide will be pumped into a combustion chamber where there will be a catalyst (manganese dioxide in this case) that will convert the peroxide into steam and oxygen. These byproducts will then exit through a nozzle. I am...
  21. G

    Hydrogen peroxide reactions that yield high energy

    Let's say I have a solid, and hydrogen peroxide. I slowly release the hydrogen peroxide onto the solid, and both rapidly decompose yielding various compounds (I believe two will always be water and oxygen gas when dealing with hydrogen peroxide). What (solid) compound should I use to release the...
  22. C

    Hydrogen peroxide production in water electrolysis

    I'm trying to understand my textbook's answer to the following problem: Q: Electrolysis can under certain circumstances result in the production of hydrogen peroxide. At which electrode will this occur, cathode or anode? A: During the formation of hydrogen peroxide from water, oxygen is...
  23. P

    Electrolysis hydrogen peroxide

    Can someone tell me how you make hydrogen peroxide through electrolysis?
  24. Topher925

    Detection of hydrogen peroxide in water

    Is there any relatively not difficult way to detect if hydrogen peroxide (H2O2) is present in pure water? I can think of a few obvious ways for high concentrations but what about concentrations of around 0.001mol%? Is there a way of detecting concentrations that small or smaller?
  25. T

    Ordinary chlorine vs hydrogen peroxide as a bleach

    I've bought some of the stuff recently mainly to replace normal household chlorine bleach. It fizzes when it's destroying germs, and unlike ordinary bleach, doesn't smell a fraction as bad (and is great as a mouthwash or completely removing pet smells etc.). Unlike chlorine bleach, it also...
  26. K

    Sodium Percarbonate as I want to use it as Hydrogen Peroxide

    Hi chaps I wonder if anyone can help - I'm really stuck! I have purchased Sodium Percarbonate as I want to use it as Hydrogen Peroxide. I want to use it at 6% strength but do not know what ratio to mix it with water with! The data sheet is here...
  27. Z

    How much pressure can be created by the decomposition of Hydrogen peroxide?

    We are a simple robotics group working in Antarctica. We have a small but nimble ROV that we launch through a hole we drill in the ice. We need to lift heavy objects off the sea floor. I want to use the decomposition of H2O2 to initiate a state change that creates the buoyancy to lift these...
  28. M

    Hydrogen peroxide as an oxidising agent

    Hi I recently did a reaction (see my last post for specifics) where hydrogen peroxide acted as an oxidising agent under basic conditions to oxidise Mn2+ ions in solution to MnO2 It did look as if some gas was liberated but hydogen peroxide only liberates oxygen when it is reduced...
  29. M

    Reaction of Manganese and hydrogen peroxide

    Hi In a recent lab I reacted Mn2+ ions with NaOH. The Mn 2+ ions exist in this equilibria [Mn(H20)6]2+ + H20 <=> [Mn(H20)5OH]+ + H30+ Addition of NaOH ions shift this equilibria to the left (by removing protons) until Mn(OH)2 is precipitated Hydrogen peroxide is then added and some...
  30. M

    Determining the Mass percent comp. of an Aqueous Hydrogen peroxide

    Homework Statement In lab we recorded a barometric pressure of 768.2 torr. Suppose we didn't have access to a barometer and assumed that atmospheric pressure was 760 mm Hg. Would the mass percent of hydrogen peroxide that you calculated for the solution be higher or lower than the value you...
  31. A

    Wondering about hydrogen peroxide

    How does it bleach hair? My Chemistry professor at college told us about how chemical straightening works, but failed to explain how peroxide can change hair colour. Thanks a bunch!
  32. A

    Need help How to make Hydrogen peroxide ''H2O2'' ?

    Need help! How to make Hydrogen peroxide ''H2O2'' ? i want to make a neon light with H2O2 but the problem is i can't find it anywhere even in my school and i was thinking how its H2O2 < ---- > H2O + O2 and that mean i can mix it but i don't know how. can anybody show me how to do it step by...
  33. Q

    Distilling 3% Grade Hydrogen Peroxide.

    h2o2 has a boiling point of 300F+ degrees and water is 212F, so if I take a bottle of 3% h2o2 which is diluted with water and boil it at 212F degrees, then it will only boil the water right? But, is it safe to do indoors with little ventilation? What does boiling h2o2 make? I want to make 30% h2o2.
  34. C

    Determining Volume Strength of Hydrogen Peroxide Solution

    Determintion of the volume strength of the solution of hydrogen peroxide provided... Homework Statement Hi, I have to dertermine the volume strength of the solution of hydrogen peroxide provided. NOTE the volume strength as I'm not quite sure how to get this! I had to dilute 10ml...
  35. G

    Hydrogen Peroxide on Potatoes ISA

    '''URGENT''' Hydrogen Peroxide on Potatoes ISA Basically I have done an experiment to find out the effect of hydrogen peroxide on potatoes and to see if the temperature affects the amount of froth produced. I have done the graph and all other things now it is just the ISA. I was wondering if...
  36. L

    Catalysts and Hydrogen Peroxide

    [SOLVED] Catalysts and Hydrogen Peroxide 1. Can catalysts other than those found in living cells break down hydrogen peroxide? Does anyone know of any sources I can get information on this question? I can't seem to find anything :(. Thanks
  37. R

    Medical Does intravenous hydrogen peroxide cure bird flu?

    Check out this site; http://www.truthmed.org/ its about cheap alternative treatments that have been tried to cure bird flu. They make a very good case for hydrogen peroxide treatment of bird flu. I'm not sure what to think of it, if its true then drug companies are pulling a very unethical...
  38. J

    Water H2O convert to Hydrogen peroxide H2O2

    Does anyone know how to take Water H2O and convert it to Hydrogen peroxide H2O2, so basally I want to add another oxygen molecule to the existing oxygen molecule? I want to use the Hydrogen peroxide for a fuel, cheap fuel, don’t want to buy petroleum products anymore and I care about the world...
  39. J

    Using 3% Hydrogen Peroxide as Mouthwash: Benefits & Risks

    I've been advised by my dentist to use 3% Hydrogen Peroxide as a mouthwash, to help clear bacteria out from underneath the gumline. Although I trust his judgment, I couldn't help but notice that hydrogen peroxide is poisonous. I'm sure this is safe to do for the short term, as it's used as a...
  40. A

    Help with percent concentration of hydrogen peroxide if diluted?

    :frown: I did an experiment on the effect of substrate concentration on the rate of a catalase. I was given 6% substrate concentration of hydrogen peroxide. We had to do 3 trials with different concentrations of the hydrogen peroxide but we had to dilute the peroxide ourselves in the second...
  41. F

    Can potato skin effect the rate at which catalase breaks down hydrogen peroxide

    can potato skin affect the rate at which catalase in potato discs breaks down hydrogen peroxide? does potato skin contain the polysacharide cellulose?
  42. C

    Raw beef liver and hydrogen peroxide?

    Why would sand increase the rate of reaction between raw beef liver and hydrogen peroxide?
  43. G

    Oxidising H2O2 with KMnO4: What Happens?

    What do you get if you use KMnO4 to oxidise hydrogen peroxide? and what happens to hydrogen peroxide if it is used as an oxidiser? Surely the second one there are two possibilities: 1) H2O2 + 2e- --> 2OH- 2) H2O2 + 2H+ + 2e- --> 2H2O
  44. S

    Why would hydrogen peroxide react better in the presence of magnesium

    Why would hydrogen peroxide react better in the presence of magnesium dioxide than in the presence of sand? Also, in human systems, why is it good to have small particles rather than large chunks?
  45. S

    Hydrogen peroxide and manganese dioxide

    For the following two reactions: hydrogen peroxide and manganese dioxide, or hydrogen peroxidea and sand - The MgO2 reacted faster - why? - it has to have something to do with the presence of catalase. Also, when i reacted potato with H2O2 and liver with H2O2, the liver caused a greater...
  46. C

    Decomposition of hydrogen peroxide

    For the decomposition of hydrogen peroxide in the presence of manganese(IV) oxide, what is the chemical method to determine the concentration of hydrogen peroxide, at different times? The solution is: To add the reaction mixture in dilute sulphuric acid, and then titrate the reaction mixture...
  47. R

    Hydrogen Peroxide oxidation state

    In a redox reaction I found, Hydrogen Peroxide (H202) was taken as having an oxidation state of zero However my chemistry teacher keeps telling me that oxygen ALWAYS has an oxidation state of -2 so that would mean the hydrogen in H202 must have an oxidation state of +2 to keep the molecule...
  48. P

    Hydrogen peroxide decomposes to form water and oxygen

    hydrogen peroxide decomposes to form water and oxygen. Its a slow rate of reaction and it takes time to decompose. So we faster the rate of reaction by adding manganese oxide which is a catalyst its function is to faster the rate of reaction . my question is if we doubled the amount of MnO2...
  49. M

    Calculate the concentration of hydrogen peroxide

    can anone help me with these questions? a) How many moles of hydrogen peroxide react with each mole of permanganate in the titrationmoles of MnO4- per mole of H2O2 b) Calculate the concentration of hydrogen peroxide in the 10 mL aliquot, taken from the reaction if the titration with...
  50. H

    Action of catalase and MnO2 on hydrogen peroxide

    can anyone give some comments or inferential analysis to the research presented below? thank you :D some info and answers to the topic questions would be nice to hear too! "To compare the action of catalase and manganese dioxide on hydrogen peroxide." 1. Label 4 test-tubes A, B, C and...