Carbonated Water
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Carbonated water is
water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...
containing dissolved
carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
gas, either artificially injected under pressure, or occurring due to natural geological processes. Carbonation causes small bubbles to form, giving the
water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...
an effervescent quality. Common forms include sparkling natural mineral water,
club soda Club soda is a form of carbonated water manufactured in North America, commonly used as a drink mixer. Sodium bicarbonate, potassium sulfate, potassium bicarbonate, potassium citrate, or sodium citrate is added to artificially replicate constitu ...
, and commercially produced sparkling water. Club soda, sparkling mineral water, and some other sparkling waters contain added or dissolved
mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2011): Mi ...
s such as potassium bicarbonate, sodium bicarbonate, sodium citrate, or potassium sulfate. These occur naturally in some mineral waters but are also commonly added artificially to manufactured waters to mimic a natural flavor profile and offset the acidity of introducing carbon dioxide gas giving one a fizzy sensation. Various carbonated waters are sold in bottles and cans, with some also produced on demand by commercial carbonation systems in bars and restaurants, or made at home using a carbon dioxide cartridge. It is thought that the first person to aerate water with carbon dioxide was William Brownrigg in the 1740s.
Joseph Priestley Joseph Priestley (; 24 March 1733 – 6 February 1804) was an English chemist, Unitarian, Natural philosophy, natural philosopher, English Separatist, separatist theologian, Linguist, grammarian, multi-subject educator and Classical libera ...
invented carbonated water, independently and by accident, in 1767 when he discovered a method of infusing water with carbon dioxide after having suspended a bowl of water above a beer vat at a brewery in Leeds, Yorkshire. He wrote of the "peculiar satisfaction" he found in drinking it, and in 1772 he published a paper entitled ''Impregnating Water with Fixed Air''. Priestley's apparatus, almost identical to that used by Henry Cavendish five years earlier, which featured a bladder between the generator and the absorption tank to regulate the flow of
carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
, was soon joined by a wide range of others. However, it was not until 1781 that companies specialized in producing artificial mineral water were established and began producing carbonated water on a large scale. The first factory was built by Thomas Henry of
Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
, England. Henry replaced the bladder in Priestley's system with large bellows. While Priestley's discovery ultimately led to the creation of the
soft drink A soft drink (see #Terminology, § Terminology for other names) is a class of non-alcoholic drink, usually (but not necessarily) Carbonated water, carbonated, and typically including added Sweetness, sweetener. Flavors used to be Natural flav ...
industry—which began in 1783 when Johann Jacob Schweppe founded Schweppes to sell bottled soda water—he did not benefit financially from his invention. Priestley received scientific recognition when the Council of the
Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...
"were moved to reward its discoverer with the Copley Medal" at the anniversary meeting of the Royal Society on 30 November 1773.


Composition

Natural and manufactured carbonated waters may contain a small amount of
sodium chloride Sodium chloride , commonly known as Salt#Edible salt, edible salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. It is transparent or translucent, brittle, hygroscopic, and occurs a ...
, sodium citrate, sodium bicarbonate, potassium bicarbonate, potassium citrate, potassium sulfate, or disodium phosphate, depending on the product. These occur naturally in mineral waters but are added artificially to commercially produced waters to mimic a natural flavor profile and offset the acidity of introducing carbon dioxide gas (which creates low 5–6 pH carbonic acid solution when dissolved in water). Artesian wells in such places as Mihalkovo in the Bulgarian Rhodope Mountains, Medžitlija in
North Macedonia North Macedonia, officially the Republic of North Macedonia, is a landlocked country in Southeast Europe. It shares land borders with Greece to the south, Albania to the west, Bulgaria to the east, Kosovo to the northwest and Serbia to the n ...
, and most notably in Selters in the German Taunus mountains, produce naturally effervescent mineral waters.


Health effects

By itself, carbonated water appears to have little to no impact on health. Carbonated water, such as club soda or sparkling water, is defined in US law as a food of
minimal nutritional value Minimal may refer to: * Minimal (music genre), art music that employs limited or minimal musical materials * Minimal (song), "Minimal" (song), 2006 song by Pet Shop Boys * Minimal (supermarket) or miniMAL, a former supermarket chain in Germany and ...
, even if minerals,
vitamin Vitamins are Organic compound, organic molecules (or a set of closely related molecules called vitamer, vitamers) that are essential to an organism in small quantities for proper metabolism, metabolic function. Nutrient#Essential nutrients, ...
s, or artificial sweeteners have been added to it. Carbonated water does not appear to have an effect on gastroesophageal reflux disease. There is tentative evidence that carbonated water may help with constipation among people who have had a
stroke Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...
.


Acid erosion

While carbonated water is somewhat acidic, this acidity can be partially neutralized by saliva. A study found that sparkling mineral water is slightly more erosive to teeth than non-carbonated water but is about 1% as corrosive as soft drinks are.


Chemistry and physical properties

Carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
gas dissolved in water creates a small amount of carbonic acid (): : with the concentration of carbonic acid being about 0.17% that of . The
acid An acid is a molecule or ion capable of either donating a proton (i.e. Hydron, hydrogen cation, H+), known as a Brønsted–Lowry acid–base theory, Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis ...
gives carbonated water a slightly tart flavor. Its pH level of between 5 and 6 is approximately in between apple juice and orange juice in acidity, but much less acidic than the acid in the stomach. A normal, healthy human body maintains pH equilibrium via acid–base homeostasis and will not be materially adversely affected by consumption of plain carbonated water. Carbon dioxide in the blood is expelled through the lungs.
Alkaline In chemistry, an alkali (; from the Arabic word , ) is a basic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The ...
salts, such as sodium bicarbonate, potassium bicarbonate, or potassium citrate, will increase pH. The amount of a gas that can be dissolved in water is described by Henry's Law. The coefficient depends on the temperature. In the carbonization process, water is chilled, optimally to just above freezing, to maximize the amount of carbon dioxide that can be dissolved in it. Higher gas pressure and lower temperature cause more gas to dissolve in the liquid. When the temperature is raised or the pressure is reduced (as happens when a container of carbonated water is opened), carbon dioxide effervesces, thereby escaping from the solution. The density of carbonated water is slightly greater than that of pure water. The volume of a quantity of carbonated water can be calculated by taking the volume of the water and adding 0.8 cubic centimetres for each gram of .


History

Many alcoholic drinks, such as
beer Beer is an alcoholic beverage produced by the brewing and fermentation of starches from cereal grain—most commonly malted barley, although wheat, maize (corn), rice, and oats are also used. The grain is mashed to convert starch in the ...
, champagne,
cider Cider ( ) is an alcoholic beverage made from the Fermented drink, fermented Apple juice, juice of apples. Cider is widely available in the United Kingdom (particularly in the West Country) and Ireland. The United Kingdom has the world's highest ...
, and spritzer, were naturally carbonated through the fermentation process. In 1662 Christopher Merret created 'sparkling wine'. William Brownrigg was apparently the first to produce artificial carbonated water, in the early 1740s, by using carbon dioxide taken from mines. In 1750 the Frenchman Gabriel François Venel also produced artificial carbonated water, though he misunderstood the nature of the gas that caused the carbonation. In 1764, Irish chemist Dr. Macbride infused water with carbon dioxide as part of a series of experiments on fermentation and putrefaction. In 1766 Henry Cavendish devised an aerating apparatus that would inspire
Joseph Priestley Joseph Priestley (; 24 March 1733 – 6 February 1804) was an English chemist, Unitarian, Natural philosophy, natural philosopher, English Separatist, separatist theologian, Linguist, grammarian, multi-subject educator and Classical libera ...
to carry out his own experiments with regard to carbonated waters. Cavendish was also aware of Brownrigg's observations at this time and published a paper on his own experiments on a nearby source of mineral water at the beginning of January in the next year. In 1767 Priestley discovered a method of infusing water with carbon dioxide by pouring water back and forth above a beer vat at a local brewery in
Leeds Leeds is a city in West Yorkshire, England. It is the largest settlement in Yorkshire and the administrative centre of the City of Leeds Metropolitan Borough, which is the second most populous district in the United Kingdom. It is built aro ...
, England."The Man Who Discovered Oxygen and Gave the World Soda Water"
New York Times. Retrieved 10 January 2015
The air blanketing the fermenting beer—called 'fixed air'—was known to kill mice suspended in it. Priestley found water thus treated had a pleasant taste, and he offered it to friends as a cool, refreshing drink. In 1772, Priestley published a paper titled ''Impregnating Water with Fixed Air'' in which he describes dripping "oil of vitriol" (
sulfuric acid Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid (English in the Commonwealth of Nations, Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen, ...
) onto chalk to produce carbon dioxide gas, and encouraging the gas to dissolve into an agitated bowl of water. Priestley referred to his invention of this treated water as being his "happiest" discovery. Priestley's apparatus, which was very similar to that invented by Henry Cavendish five years earlier, featured a bladder between the generator and the absorption tank to regulate the flow of carbon dioxide, and was soon joined by a wide range of others, but it was not until 1781 that companies specialized in producing artificial mineral water were established and began producing carbonated water on a large scale. The first factory was built by Thomas Henry of
Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
, England. Henry replaced the bladder in Priestley's system with large bellows. J. J. Schweppe developed a process to manufacture bottled carbonated mineral water based on the discovery of Priestley, founding the Schweppes Company in Geneva in 1783. Schweppes regarded Priestley as "the father of our industry". In 1792, Schweppe moved to London to develop the business there. In 1799 Augustine Thwaites founded Thwaites' Soda Water in Dublin. A ''London Globe'' article claims that this company was the first to patent and sell "Soda Water" under that name. The article says that in the hot summer of 1777 in London "aerated waters" (that is, carbonated) were selling well but there was as yet no mention of "soda water", though the first effervescent drinks were probably made using " soda powders" containing bicarbonate of soda and tartaric acid. The name soda water arose from the fact that soda ( sodium carbonate or bicarbonate) was often added to adjust the taste and pH. Modern carbonated water is made by injecting pressurized
carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
into water. The pressure increases the
solubility In chemistry, solubility is the ability of a chemical substance, substance, the solute, to form a solution (chemistry), solution with another substance, the solvent. Insolubility is the opposite property, the inability of the solute to form su ...
and allows more carbon dioxide to dissolve than would be possible under standard atmospheric pressure. When the bottle is opened, the pressure is released, allowing gas to exit the solution, forming the characteristic bubbles. Modern sources of are from industrial processes, such as burning of fossil fuels like coal and methane at power plants, or steam reforming of methane for hydrogen production.


Etymology

In the United States, plain carbonated water was generally known either as ''soda water'', due to the sodium salts it contained, or ''seltzer water'', deriving from the German town Selters renowned for its mineral springs. Sodium salts were added to plain water both as flavoring (to mimic famed mineral waters, such as naturally effervescent '' Selters'', ''Vichy water'' and '' Saratoga Water'') and acidity regulators (to offset the acidic 5-6 pH carbonic acid created when carbon dioxide is dissolved in water). In the 1950s the term
club soda Club soda is a form of carbonated water manufactured in North America, commonly used as a drink mixer. Sodium bicarbonate, potassium sulfate, potassium bicarbonate, potassium citrate, or sodium citrate is added to artificially replicate constitu ...
began to be popularized. Generally, ''seltzer water'' has no added sodium salts, while ''club soda'' still retains some sodium salts.


Products for carbonating water


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Soda siphons

The soda siphon, or seltzer bottle—a glass or metal pressure vessel with a release valve and spout for dispensing pressurized soda water—was a common sight in bars and in early- to mid-20th-century homes where it became a symbol of middle-class affluence. The gas pressure in a siphon drives soda water up through a tube inside the siphon when a valve lever at the top is depressed. Commercial soda siphons came pre-charged with water and gas and were returned to the retailer for exchange when empty. A deposit scheme ensured they were not otherwise thrown away. Home soda siphons can carbonate flatwater through the use of a small disposable steel bulb containing carbon dioxide. The bulb is pressed into the valve assembly at the top of the siphon, the gas injected, then the bulb withdrawn.


Gasogene

The gasogene (or gazogene, or seltzogene) is a late Victorian device for producing carbonated water. It consists of two linked glass globes: the lower contained water or other drink to be made sparkling, the upper a mixture of tartaric acid and sodium bicarbonate that reacts to produce
carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
. The produced gas pushes the liquid in the lower container up a tube and out of the device. The globes are surrounded by a wicker or wire protective mesh, as they have a tendency to explode.


Codd-neck bottles

In 1872, soft drink maker Hiram Codd of Camberwell, London, designed and patented the Codd-neck bottle, designed specifically for carbonated drinks. The ''Codd-neck bottle'' encloses a
marble Marble is a metamorphic rock consisting of carbonate minerals (most commonly calcite (CaCO3) or Dolomite (mineral), dolomite (CaMg(CO3)2) that have recrystallized under the influence of heat and pressure. It has a crystalline texture, and is ty ...
and a
rubber Rubber, also called India rubber, latex, Amazonian rubber, ''caucho'', or ''caoutchouc'', as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Types of polyisoprene ...
washer/gasket in the neck. The bottles were filled upside down, and pressure of the gas in the bottle forced the marble against the washer, sealing in the carbonation. The bottle was pinched into a special shape to provide a chamber into which the marble was pushed to open the bottle. This prevented the marble from blocking the neck as the drink was poured. Soon after its introduction, the bottle became extremely popular with the soft drink and
brewing Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and #Fermenting, fermenting the resulting sweet liquid with Yeast#Beer, yeast. It may be done in a brewery ...
industries mainly in the UK and the rest of Europe, Asia, and Australasia, though some
alcohol Alcohol may refer to: Common uses * Alcohol (chemistry), a class of compounds * Ethanol, one of several alcohols, commonly known as alcohol in everyday life ** Alcohol (drug), intoxicant found in alcoholic beverages ** Alcoholic beverage, an alco ...
drinkers disdained the use of the bottle. R. White's, the biggest soft drinks company in London and south-east England when the bottle was introduced, was among the companies that sold their drinks in Codd's glass bottles. One
etymology Etymology ( ) is the study of the origin and evolution of words—including their constituent units of sound and meaning—across time. In the 21st century a subfield within linguistics, etymology has become a more rigorously scientific study. ...
of the term '' codswallop'' originates from beer sold in Codd bottles, though this is generally dismissed as a folk etymology. The bottles were produced for many decades, but gradually declined in usage. Since children smashed the bottles to retrieve the marbles, vintage bottles are relatively rare and have become collector items, particularly in the UK. Due to the risk of explosion and injuries from fragmented glass pieces, use of this type of bottle is discouraged in most countries, since other methods of sealing pressurized bottles can more easily incorporate release of unsafe pressures. The Codd-neck design is still used for the Japanese soft drink Ramune, and in the Indian drink called Banta.


Soda makers

Soda makers or soda carbonators are appliances that carbonate water with multiple-use carbon dioxide canisters. A variety of systems are produced by manufacturers and hobbyists. The commercial units may be sold with concentrated syrup for making flavored soft drinks. One major producer of soda carbonators is SodaStream. Their products were popular during the 1970s and 1980s in the United Kingdom, and are associated with nostalgia for that period and have experienced a comeback in the 2000s.


Commercial

The process of dissolving carbon dioxide in water is called carbonation. Commercial soda water in siphons is made by chilling filtered plain water to or below, optionally adding a
sodium Sodium is a chemical element; it has Symbol (chemistry), symbol Na (from Neo-Latin ) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 element, group 1 of the peri ...
or
potassium Potassium is a chemical element; it has Symbol (chemistry), symbol K (from Neo-Latin ) and atomic number19. It is a silvery white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to ...
based alkaline compound such as sodium bicarbonate to neutralize the acid created when pressurizing the water with carbon dioxide (which creates high 8-10 pH carbonic acid-bicarbonate buffer solution when dissolved in water).Carbonic acid, ''britannica.com''
/ref> The gas dissolves in the water, and a top-off fill of carbon dioxide is added to pressurize the siphon to approximately , some higher than is present in fermenting champagne bottles. In many modern restaurants and bars soda water is manufactured on-site using devices known as carbonators. Carbonators use mechanical pumps to pump water into a pressurized chamber where it is combined with carbon dioxide from pressurized tanks at approximately . The pressurized carbonated water then flows either directly to taps or mixing heads where flavoring is added before dispensing.


Uses


Carbonated beverages

Carbonated water is a key ingredient in
soft drink A soft drink (see #Terminology, § Terminology for other names) is a class of non-alcoholic drink, usually (but not necessarily) Carbonated water, carbonated, and typically including added Sweetness, sweetener. Flavors used to be Natural flav ...
s, beverages that typically consist of carbonated water, a sweetener, and a flavoring such as
cola Cola is a Carbonation, carbonated soft drink flavored with vanilla, cinnamon, citrus essential oil, oils, and other flavorings. Cola became popular worldwide after the American pharmacist John Stith Pemberton invented Coca-Cola, a trademarked br ...
,
ginger Ginger (''Zingiber officinale'') is a flowering plant whose rhizome, ginger root or ginger, is widely used as a spice and a folk medicine. It is an herbaceous perennial that grows annual pseudostems (false stems made of the rolled bases of l ...
, or
citrus ''Citrus'' is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, mandarins, lemons, grapefruits, pomelos, and limes. ''Citrus'' is nativ ...
. Plain carbonated water or sparkling mineral water is often consumed as an alternative to soft drinks.
Club soda Club soda is a form of carbonated water manufactured in North America, commonly used as a drink mixer. Sodium bicarbonate, potassium sulfate, potassium bicarbonate, potassium citrate, or sodium citrate is added to artificially replicate constitu ...
is carbonated water to which compounds such as sodium bicarbonate or potassium sulfate have been added. Many manufacturers produce unsweetened sparkling water products that are lightly flavored by the addition of aromatic ingredients such as essential oils. Carbonated water is often mixed with fruit juice to make sparkling alcoholic and non-alcoholic punches.


Alcoholic beverages

Carbonated water is a diluent mixed with alcoholic beverages where it is used to top-off the drink and provides a degree of 'fizz'. Adding soda water to "short" drinks such as spirits dilutes them and makes them "long" (not to be confused with long drinks such as those made with
vermouth Vermouth (, ) is an Italian aromatized wine, aromatized, fortified wine, flavored with various Botany, botanicals (roots, Bark (botany), barks, flowers, seeds, Herb, herbs, and Spice, spices) and sometimes Food coloring, colored. The modern ve ...
). Carbonated water also works well in short drinks made with whiskey,
brandy Brandy is a liquor produced by distilling wine. Brandy generally contains 35–60% alcohol by volume (70–120 US proof) and is typically consumed as an after-dinner digestif. Some brandies are aged in wooden casks. Others are coloured ...
, and Campari. Soda water may be used to dilute drinks based on cordials such as orange squash. Soda water is a necessary ingredient in many cocktails, such as whiskey and soda or Campari and soda.


Cooking

Carbonated water is increasingly popular in Western cooking as a substitute for plain water in deep-frying batters to provide a lighter texture to doughs similar to '' tempura''. Kevin Ryan, a food scientist at the University of Illinois at Urbana–Champaign, says the effervescent bubbles when mixed with dough provide a light tempura-like texture, which gives the illusion of being lower calorie than regular frying batters. The lightness is caused by pockets of carbon dioxide gas being introduced into the batter (a process which natural rising using yeast also creates) and further expanding when cooked.


Stain remover

Since the dissolved gas in carbonated water acts as a temporary surfactant, it has been recommended as a household remedy for removing stains, particularly those of red wine.


See also

* Premix and postmix *
Soda jerk Soda jerk (or soda jerker) is an American term used to refer to a person—typically a young man—who would operate the soda fountain in a restaurant, preparing and serving carbonated drink, soda drinks and ice cream sodas. The drinks were made ...
* Sodium carbonate * Tonic water * Limnic eruption – in deep water lakes, a massive, sudden eruption of dissolved carbon dioxide


Notes


References


External links


The Priestley Society
(archived)
Priestley's paper ''Impregnating Water with Fixed Air'' 1772archived
hosted on truetex.com

on Radio Diaries {{DEFAULTSORT:Carbonated Water Carbonated drinks English inventions Culture of the United Kingdom Industrial gases Soft drinks 18th-century inventions Drinks