bleachblitĘ
bleach (v)
- present
- bleaches
- past
- bleached
- past participle
- bleached
- present participle
- bleaching
bleach (n)
- plural
- bleaches
bleach
bleach
English Definitions:
bleach (noun)
the whiteness that results from removing the color from something
"a complete bleach usually requires several applications"
bleaching agent, bleach, blanching agent, whitener (noun)
an agent that makes things white or colorless
bleach (verb)
the act of whitening something by bleaching it (exposing it to sunlight or using a chemical bleaching agent)
bleach, bleach out, decolor, decolour, decolorize, decolourize, decolorise, decolourise, discolorize, discolourise, discolorise (verb)
remove color from
"The sun bleached the red shirt"
bleach (verb)
make whiter or lighter
"bleach the laundry"
bleach (Noun)
A chemical, such as sodium hypochlorite or hydrogen peroxide, or a preparation of such a chemical, used for disinfecting or whitening.
bleach (Noun)
A variety of bleach.
bleach (Verb)
To treat with bleach, especially so as to whiten (fabric, paper, etc) or lighten (hair).
bleach (Verb)
(of corals) to lose color due to stress-induced expulsion of symbiotic unicellular algae.
Bleach
Bleach refers to a number of chemicals which remove color, whiten or disinfect, often via oxidation. The bleaching process has been known for thousands of years, but the chemicals currently used for bleaching resulted from the work of several 18th century scientists. Chlorine is the basis for the most commonly used bleaches, for example, the solution of sodium hypochlorite, which is so ubiquitous that many people just call it "bleach", and calcium hypochlorite, the major compound in "bleaching powder". Oxidizing bleaching agents that do not contain chlorine most often are based on peroxides, such as hydrogen peroxide, sodium percarbonate and sodium perborate. While most bleaches are oxidizing agents, a fewer number are reducing agents such as sodium dithionite and sodium borohydride. Bleaches are used as household chemicals to whiten clothes and remove stains and as disinfectants, primarily in the bathroom and kitchen. Many bleaches have strong bactericidal properties, and are used for disinfecting and sterilizing and thus are used in swimming pool sanitation to control bacteria, viruses and algae and in any institution where sterile conditions are needed. They are also used in many industrial processes, notably in the bleaching of wood pulp. Bleach is also used for removing mildew, killing weeds and increasing the longevity of flowers.
Bleach
Bleach is the generic name for any chemical product that is used industrially or domestically to remove color (whitening) from a fabric or fiber or to clean or to remove stains in a process called bleaching. It often refers specifically to a dilute solution of sodium hypochlorite, also called "liquid bleach". Many bleaches have broad spectrum bactericidal properties, making them useful for disinfecting and sterilizing. They are used in swimming pool sanitation to control bacteria, viruses, and algae, and in many places where sterile conditions are required. They are also used in many industrial processes, notably in the bleaching of wood pulp. Bleaches also have other minor uses like removing mildew, killing weeds, and increasing the longevity of cut flowers.Bleaches work by reacting with many colored organic compounds, such as natural pigments, and turning them into colorless ones. While most bleaches are oxidizing agents (chemicals that can remove electrons from other molecules), some are reducing agents (that donate electrons). Chlorine, a powerful oxidizer, is the active agent in many household bleaches. Since pure chlorine is a toxic corrosive gas, these products usually contain hypochlorite, which releases chlorine. "Bleaching powder" usually means a formulation containing calcium hypochlorite. Oxidizing bleaching agents that do not contain chlorine are usually based on peroxides such as hydrogen peroxide, sodium percarbonate, and sodium perborate. These bleaches are called 'non-chlorine bleach,' 'oxygen bleach' or 'color-safe bleach.'Reducing bleaches have niche uses, such as sulfur dioxide used to bleach wool, either as gas or from solutions of sodium dithionite; and sodium borohydride. Bleaches generally react with many other organic substances besides the intended colored pigments, so they can weaken or damage natural materials like fibers, cloth, and leather, and intentionally applied dyes such as the indigo of denim. For the same reason, ingestion of the products, breathing of the fumes, or contact with skin or eyes can cause health damage.
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