How long is bleach effective when mixed with water?
Thank you for asking about the shelf life of Ultra regular CLOROX liquid bleach. When bleach and water are mixed together to create a cleaning or disinfecting solution, the solution is only good for 24 hours. The temperature of the water does not affect the cleaning or disinfecting abilities of the solution.
The bleach active in Clorox® Regular-Bleach is sodium hypochlorite, and it does not “deactivate” in water above 77°F. However, a higher water temperature does increase the rate that the bleach degrades into salt and water. This break down is natural, and is part of what makes bleach so environmentally friendly.
- For killing mold with bleach use a ratio of one cup of bleach per gallon of water (ie about 1 part bleach to 10 parts water). Apply the solution to non-porous surfaces with mold growth either by using a spray bottle or by using a bucket and a sponge or cloth.
- Chlorine bleach is especially valuable as a disinfectant, since germs are not able to develop immunity against it, as they have done against certain drugs [source: Lenntech]. When sodium hypochlorite comes in contact with viruses, bacteria, mold or fungi, it oxidizes molecules in the cells of the germs and kills them.
- A. The Food and Drug Administration code for dishwashing by hand in a commercial food establishment calls for a wash solution temperature of 110 degrees Fahrenheit, which is uncomfortably hot for hands but not hot enough to kill most germs.
Whitening. Colors of natural organic materials typically arise from organic pigments, such as beta carotene. Chemical bleaches work in one of two ways: An oxidizing bleach works by breaking the chemical bonds that make up the chromophore.
- Types of Bleach. There are several types of bleach. Chlorine bleach usually contains sodium hypochlorite. Oxygen bleach contains hydrogen peroxide or a peroxide-releasing compound such as sodium perborate or sodium percarbonate.
- Examples of oxidizers include organic peroxides, such as benzoyl peroxide, and other types of oxidizers, such as concentrated nitric acid, sodium hypochlorite (also known as bleach), oxygen, concentrated or heated perchloric acid, concentrated sulfuric acid, and concentrated hydrogen peroxide.
- The active ingredient in household bleach is sodium hypochlorite, which is derived from salt. In fact, Clorox is headquartered in Oakland, California because we started making bleach here by running electricity through salt water from San Francisco Bay! So household bleach begins and ends as salt and water.
Bleach does not contaminate ground water because it does not survive sewage treatment - either in municipal sewage treatment plants or in septic systems. Thus, there are no harmful effects of bleach in the environment. When used for cleaning and disinfecting, bleach cannot form dioxins.
- Household bleach (sodium hydroxide) is not, technically speaking, considered corrosive or toxic, even if ingested. However, bleach exposure can cause irritation in the eyes, mouth, lungs and on skin. Individuals with asthma or other breathing problems are particularly susceptible.
- That's where natural bleach alternatives come in. Lemon juice and hydrogen peroxide are high on the list of effective natural bleaches. When they are combined, it amps up the bleaching power. This chlorine bleach alternative can be used for laundry, cleaning and disinfecting.
- Bleach is not classified as a carcinogen. The International Agency for Research on Cancer, has ruled that evidence is not sufficient to definitively classify it as carcinogenic or noncarcinogenic, although studies in animals have found that it has no carcinogenic activity.
Updated: 12th November 2019