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During manufacturing, stabilizers are added into hydrogen peroxide solution in order to maintain its stability. Stabilized hydrogen peroxide is commercially required to guarantee hydrogen peroxide concentration is stable since delivered until received and used by users.
Instead of adding single stabilizer, a mixture of stabilizers is usually used. It is because contaminants dissolved or suspended in hydrogen peroxide solution come with unknown characteristics.
Stabilizers for hydrogen peroxide can be organic or inorganic substances. Each hydrogen peroxide manufacturer may have its own stabilizer formula. This produces hydrogen peroxide with different quality, mainly in its stability, evaporation residue, free mineral acid, pH and acidity.
Common stabilizers used for hydrogen peroxide are sodium stannate, 8-hydroxyquinoline and sodium pyrophosphate. Besides, these substances certain acid is also usually added to adjust pH of hydrogen peroxide solution because certain stabilizer causes increasing of pH of hydrogen peroxide solution, which in turn could increase its decomposition rate.
As a user, you are suggested not to add stabilizers into the hydrogen peroxide that you have purchased by yourself. It is manufacturer responsibility and just asks them if you would like to purchase more stabilized hydrogen peroxide.
Labels: Analysis Tools
Specific gravity measurement is one of the most common and fastest concentration determination methods for hydrogen peroxide solution. This is the most simple measurement method. Specific gravity is stated without any measurement unit.
To measure hydrogen peroxide specific gravity we usually use hydrometer. Hydrometer shows direct result instantly.
Hydrometer selection is made based on hydrogen peroxide concentration to be measured. In the market, common hydrometer measurement range available are 1.120~1.180 and 1.180~1.240. They are used for hydrogen peroxide concentration range from about 25 to 35wt% and 35 to 60wt%. Please specify clearly your requirement before purchasing any hydrometer.
A table that relates specific gravity of hydrogen peroxide, its concentration and temperature should also be available. Provide one copy in your laboratory for your reference. You can download that table here.
Don’t forget to provide a measuring cylinder (capacity 200 ml) and thermometer.
To make sure the hydrometer is always in good condition and to ensure correct measurement, make a calibration schedule. If you are not sure on how long the calibration period, contact the hydrometer manufacturer or vendor. Keep the calibration record and certificate.
This post is a similiar with my previous post "tips for measurement of hydrogen peroxide density".
Labels: Industrial Uses
Mitsubishi Gas Chemical Japan (MGC), a leading hydrogen peroxide producer in the world, has developed a new environmental-hydrogen peroxide application technology, i.e. for soil decontamination.
The technology is called by “Mild Fenton Treatment-Jet Blend Method”. MGC has developed a biodegradable catalyst that enables hydrogen peroxide to be used for soil decontamination in a wider pH range, from acid to mildly alkaline. Jet blend method is developed by Kajima Corporation.
In the Fenton treatment, hydrogen peroxide reacts with the catalyst resulting hydroxyl radical, a kind of active enzyme. Soil contaminants such as volatile organic compound (VOC), heavy metal and agricultural chemicals, will be decomposed by the oxidative power of hydroxyl ions.
By using jet blend method, the cleaning agent, hydrogen peroxide, can be injected to the targeted soil layer. So that soil decontamination process will be effective.
Labels: Home Uses
Hydrogen peroxide can be used together with either plain white vinegar of apple cider vinegar to kill harmful bacteria such as all Salmonella, E. coli and Shigella effectively on foods, vegetables and households and kitchen as well.
As reported on www.healingdaily.com, at first prepare 3% hydrogen peroxide (food grade) in a clean spray bottle and place vinegar in another clean spray immediately on the foods, vegetables, any surface or households. To apply the two substances, just spray hydrogen peroxide at first and then followed by vinegar or vice versa. This method is more effective than when we use hydrogen peroxide or vinegar alone, combined together in one spray bottle.
The hydrogen peroxide and vinegar sprays can be used to clean residues (pesticides) off fruits and vegetables, clean and sanitize counters, food preparation surface (including wooden cutting board) and clean kitchen. By using these two products, we will be able to avoid using harmful toxic chemical cleaners.