Dishwasher detergent

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A Finish dishwashing detergent tablet

Dishwasher detergent is a detergent made for washing dishes in a dishwasher. Dishwasher detergent is different from dishwashing liquid made to wash dishes by hand.

Uses[edit]

When using a dishwasher, the user must select a special detergent for its use.[1] All detergents are designed for use after the user scrapes leftover food from the dishes before washing.[2] To function, the user places dishes in the dishwasher in such fashion that the surface of all dishes is open to the flow of water.[2]

Most dishwasher detergents are incompatible for use with silver, brass, cast iron, bronze, aluminum, pewter, and goldleaf.[2] They can also harm disposable plastic, anything wood, knives with hollow handles, and fine glassware.[2]

Types[edit]

There are specific examples of chemical reactions we use in our everyday lives. For example, a dishwasher detergent uses sodium hypochlorite and sodium carbonate (simple bleach) in a chemical reaction to clean the dishes. Tide detergent in a washing machine uses a group of chemicals that break the bonds of grease and dirt to clean clothes. A car battery uses a chemical reaction between lead plates and a strong acid to create power. These examples of chemical reactions must occur within a specific temperature range to be effective. Dishes washed in cold water are less clean than dishes washed in hot water. Depending on color and amount of dirt generally, clothes washed in cold water don’t get as clean as clothes washed in hot water. People who try to start with old car battery on a very cold morning can get a nasty surprise when the battery doesn’t produce enough power to start the car.  

Composition[edit]

Different kinds of dishwashing detergent contain different combinations of ingredients. Common ingredients include:

Dishwashing detergent may also contain:[citation needed]

  • Anti-foaming agents:[citation needed] Foam interferes with the washing action. Foam may affect operation of the machine's water-level sensors and will leak past the door seals.
  • Additives to slow down the removal of glaze & patterns from glazed ceramics
  • Perfumes
  • Anti-caking agents (in granular detergent)
  • Starches (in tablet based detergents)
  • Gelling agents (in liquid/gel based detergents)

Dishwasher detergents are generally strongly alkaline (basic).[6]

Inexpensive powders may contain sand. Such detergents may harm the dishes and the dishwasher. Powdered detergents are more likely to cause fading on china patterns.[7]

Besides older style detergents for dishwashers, biodegradable detergents also exist for dishwashers. These detergents may be more environmentally friendly than conventional detergents.

Hand-washing dish detergent (washing up liquid) creates a large foam of bubbles which will leak from the dishwasher.[8]

Rinse aid[edit]

Rinse aid (sometimes called rinse agent) contains surfactants and uses Marangoni stress to prevent droplet formation, so that water drains from the surfaces in thin sheets, rather than forming droplets.[citation needed]

The benefits of using it are that it prevents "spotting" on glassware (caused by droplets of water drying and leaving behind dissolved limescale minerals), and can also improve drying performance as there is less water remaining to be dried. A thinner sheet of water also has a much larger surface-area than a droplet of the same volume, which increases the likelihood of water molecules evaporating.

See also[edit]

References[edit]

  1. ^ "Dishwasher detergents Overview". Consumer Reports. Retrieved 17 March 2017.
  2. ^ a b c d "Dishwasher Detergent Buying Guide". Consumer Reports. January 2017. Retrieved 17 March 2017.
  3. ^ "Alkaline dishwasher detergent – The Procter & Gamble Company". Freepatentsonline.com. Retrieved 2012-03-02.
  4. ^ Baguley, Richard. "Appliance Science: How dishwasher detergents digest food stains". CNET.
  5. ^ "A beginner's guide to enzymes in detergents". Engagement Portal. Novozymes.
  6. ^ "Curiosities: What's the difference between dishwasher detergent, laundry detergent and dish soap? Why aren't they interchangeable?". news.wisc.edu.
  7. ^ "Hotpoint Service – Appliance Repairs, Spare Parts and Accessories for Hotpoint, Creda, Ariston". Hotpointservice.co.uk. Archived from the original on 2012-03-20. Retrieved 2012-06-20.
  8. ^ Technology Connections (20 December 2020). "Detergent packs are kinda wishy-washy (Dishwashers Explained)". YouTube. Retrieved 23 December 2020 – via https://www.youtube.com/channel/UCy0tKL1T7wFoYcxCe0xjN6Q.