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Chemical compound
Calcium sulfite, or calcium sulphite, is a chemical compound, the calcium salt of sulfite with the formula CaSO3·x(H2O). Two crystalline forms are known
Calcium_sulfite
Industrial process to extract pure cellulose from wood pulp
components of the lignocellulose. A variety of sulfite/bisulfite salts are used, including sodium (Na+), calcium (Ca2+), potassium (K+), magnesium (Mg2+),
Sulfite_process
Anion of sulfur with 3 oxygen atoms
Sulfites or sulphites are compounds that contain the sulfite ion (systematic name: sulfate(IV) ion), SO32–. The sulfite ion is the conjugate base of bisulfite
Sulfite
Chemical compound
Calcium bisulfite (calcium bisulphite or calcium hydrogen sulfite) is an inorganic compound which is the salt of a calcium cation and a bisulfite anion
Calcium_bisulfite
Food additives
The topic of sulfite food and beverage additives covers the application of sulfites in food chemistry. "Sulfite" is jargon that encompasses a variety of
Sulfite food and beverage additives
Sulfite_food_and_beverage_additives
Chemical derived from gypsum used in food and industry
an impure calcium sulfite, which oxidizes on storage to calcium sulfate. In the production of phosphoric acid from phosphate rock, calcium phosphate is
Calcium_sulfate
Technologies used in fossil-fuel power plants
application. The use of lime results in a slurry of calcium sulfite (CaSO3) that must be disposed of. Calcium sulfite can be oxidized to produce by-product gypsum
Flue-gas_desulfurization
Chemical element with atomic number 20 (Ca)
In baking, calcium phosphate is used as a leavening agent. Calcium sulfite is used as a bleach in papermaking and as a disinfectant, calcium silicate is
Calcium
Chemical compound
Barium sulfite is the inorganic compound with the chemical formula BaSO3. It is a white powder that finds few applications. It is an intermediate in the
Barium_sulfite
Chemical compound
sodium sulfite (E 221), sodium bisulfite (E 222), sodium metabisulfite (E 223), potassium metabisulfite (E 224), calcium sulfite (E 226), calcium bisulfite
Sodium_bisulfite
Chemical compound of sulfur and oxygen
sulfur-containing coal or petroleum. In particular, calcium oxide (lime) reacts with sulfur dioxide to form calcium sulfite: CaO + SO2 → CaSO3 Aerobic oxidation of
Sulfur_dioxide
Class of chemical compounds
discovered in the 1980s as calcium and rare earth element salts. Minerals in this class were later discovered. Minerals may have sulfite as an essential component
Sulfite_sulfate
Chemical compound
magnesium sulfite trihydrate, or MgSO 3·3H 2O. The anhydrous form is hygroscopic, meaning that it readily absorbs water from the air. Calcium sulfite Magnesium
Magnesium_sulfite
Chemical reaction in which an acid and a base react quantitatively
produced forming calcium sulfite. A suspension of lime is then injected into the mixture to produce a slurry, which removes the calcium sulfite and any remaining
Neutralization_(chemistry)
Codes for food additives
the EU. E225 Potassium sulfite preservative E226 Calcium sulfite preservative Approved in the EU. E227 Calcium hydrogen sulfite (preservative) firming
E_number
Food additives that strengthen processed food
are: Calcium carbonate (E170) Calcium hydrogen sulfite (E227) Calcium citrates (E333) Calcium phosphates (E341) Calcium sulfate (E516) Calcium chloride
Firming_agent
enhancer Calcium hydrogen sulfite – preservative, antioxidant Calcium hydroxide – mineral salt Calcium inosinate – flavor enhancer Calcium lactate –
List_of_food_additives
Addition of a sulfate group to a compound
presence of calcium oxide or calcium carbonate, which, directly or indirectly, bind sulfur dioxide and some oxygen to give calcium sulfite. The net reaction
Sulfation
inscription by her tomb was adorned with a mortar composed of gypsum and calcium sulfite—it had acquired a pinkish color as a result of iron oxide exposure
Wenshet
Historic district in Rhode Island, United States
Pleasant Valley, Rhode Island, manufactured calcium sulfite. Horsford's first patent used calcium sulfite to neutralize chlorine in bleached fabrics.
Rumford Chemical Works and Mill House Historic District
Rumford_Chemical_Works_and_Mill_House_Historic_District
Class of plant cell wall polysaccharides
used for producing ethanol. This process was primarily applied to calcium sulfite brown liquors. Xylan The films based on xylan show low oxygen permeability
Hemicellulose
Naming system for food additives
potassium sulfite preservative, antioxidant 226 E U calcium sulfite preservative, antioxidant 227 E U calcium bisulfite, calcium hydrogen sulfite preservative
International Numbering System for Food Additives
International_Numbering_System_for_Food_Additives
Coal-fired power plant in South Africa
emitted gasses to chemically bind with the sulphur dioxide and create calcium sulfite was also mixed with the fly ash and subsequently entered the chimney
Kusile_Power_Station
Chemical mixture used as a pest control agent
mixture of calcium polysulfides and thiosulfate (plus other reaction by-products such as sulfite and sulfate), formed by reacting calcium hydroxide with
Lime_sulfur
Salt, anion or ester of a sulfonic acid
Classically, alkylsulfonates can prepared by the Strecker sulfite alkylation, in which sulfite displaces a halide: RBr + Na2SO3 → RSO3Na + NaBr Arylsulfonates
Sulfonate
calcium sulfite 10257–55–3 CaSO4 calcium sulfate 7778–18–9 CaSO4 · 0.5H2O plaster of paris calcium sulfate hemihydrate 10034–76–1 CaSe calcium selenide
Glossary_of_chemical_formulae
Chemical compound
Potassium bisulfite (or potassium hydrogen sulfite) is a chemical mixture with the approximately correctly mentioned formula chemical formula KHSO3. Potassium
Potassium_bisulfite
Water-soluble food coloring
dilute solution.[citation needed] When reacted with sulfites, caramel color may retain traces of sulfite after processing. However, in finished food products
Caramel_coloring
Element of an industrial furnace
to take place to convert SO2 and SO3 from the flue gas to calcium sulfate and calcium sulfite. Water will also be injected at the same time to control
Circulating_fluidized_bed
Chemical compound
carbonate is used to make sodium bisulfite (NaHSO3), which is used for the "sulfite" method of separating lignin from cellulose. This reaction is exploited
Sodium_carbonate
Coal and natural gas power plant in Washington state
percent. The chemical process, along with additional oxidation, created calcium sulfite, also known as gypsum. The gypsum was removed and used in the production
Centralia_Power_Plant
– CaCl2 Calcium chromate – CaCrO4 Calcium cyanamide – CaCN2 Calcium fluoride – CaF2 Calcium hydride – CaH2 Calcium hydroxide – Ca(OH)2 Calcium monosilicide
List_of_inorganic_compounds
Facility which pulps wood or plant fibre
In the sulfite process the pulping chemical is a mixture of metal (sodium, magnesium, potassium, or calcium) and ammonium sulfite or sulfite. After several
Pulp_mill
Bleached wood pulp or cotton linters with a high cellulose content
non-cellulose content. The sulfite process produces pulp with a cellulose content up to 92 percent. It can use ammonium, calcium, magnesium or sodium as
Dissolving_pulp
Chemical element with atomic number 16 (S)
Isolated sulfite oxidase deficiency is a rare, fatal genetic disease caused by mutations to sulfite oxidase, which is needed to metabolize sulfites to sulfates
Sulfur
Process of converting wood into wood pulp
"resinous pine species" was not well suited to the earlier sulfite process (in particular, using a calcium base), was marked in the period from 1915-1930. The
Kraft_process
Chemicals used in paper manufacturing
sulfurous acid is known as the sulfite process, the neutral sulfite semichemical is treated as a third process separate from sulfite, and soda pulping which
Paper_chemicals
Chemical element with atomic number 12 (Mg)
chlorophyll), and microbe culture media. Magnesium sulfite is used in the manufacture of paper (sulfite process). Magnesium phosphate is used to fireproof
Magnesium
Impact-resistant high explosive
called sulfitation, where the crude TNT is treated with aqueous sodium sulfite solution to remove less stable isomers of TNT and other undesired reaction
TNT
Byproducts from the production of wood pulp
polyelectrolyte polymers: they are byproducts from the production of wood pulp using sulfite pulping. LS's are used for emulsion stabilization and Dispersants,a binder
Lignosulfonates
Particle, atom or molecule with a net electrical charge
carbonate HCO−3 bicarbonate Hydrogen sulfate HSO−4 bisulfate Hydrogen sulfite HSO−3 bisulfite Hydroxide OH− Hypochlorite ClO− chloroxide Monohydrogen
Ion
Chemical compound
supplanted by production from the lignin-containing waste produced by sulfite pulping for preparing wood pulp for the paper industry. By 1981, a single
Vanillin
Chemical(s) which convert a latent image on photographic film to a visible image
add a pinch[quantify] of sodium sulfite before dissolving the metol to prevent oxidation, but large amounts of sulfite in solution will make the metol
Photographic_developer
chlorophyll), and microbe culture media. Magnesium sulfite is used in the manufacture of paper (sulfite process). Magnesium phosphate is used to fireproof
Magnesium_compounds
Polyatomic anion (IO3) with charge -1
iodide, in contrast to the situation for chlorate. Iodate is reduced by sulfite: 6HSO−3 + 2IO−3 → 2I− + 6HSO−4 Iodate oxidizes iodide in acidic conditions:
Iodate
Fermented drink
ingredients will inhibit fermentation, such as chlorine in tap water or the sulfites used to preserve dried fruit. Additional precautions are taken to keep
Water_kefir
Fibrous material used notably in papermaking
patent on the use of calcium bisulfite, Ca(HSO3)2, to pulp wood in 1867. Almost a decade later, the first commercial sulfite pulp mill was built, in
Pulp_(paper)
Chemical species that donates an electron to another species in a redox reaction
hydrogen, carbon monoxide, the alkali metals, formic acid, oxalic acid, and sulfite compounds. In their pre-reaction states, reducers have extra electrons
Reducing_agent
Variation of solubility of assorted substances
External links "Cerium (III) Acetate" (PDF). Retrieved 2019-09-28. "Magnesium Sulfite" (PDF). srdata.nist.gov. Retrieved 2018-12-21. "CAS 7722-88-5 Sodium pyrophosphate(v)
Solubility_table
Capacity of a substance to dissolve in a homogeneous way
chemical reaction between the two substances, such as the reaction of calcium hydroxide with hydrochloric acid; even though one might say, informally
Solubility
Headache often accompanied by nausea and flushing
exempt from including a sulfite warning. Wines that have under 10mg/L of sulfites do not need to be labeled that they contain sulfites. This includes added
Red_wine_headache
Damage to concrete affecting its mechanical strength and its durability
attack). Sulfates and sulfites are ubiquitous in the natural environment and are present from many sources, including gypsum (calcium sulfate) often present
Concrete_degradation
Food preservation
preservatives include sulfur dioxide and its related chemicals, such as sulfites. The use of preservatives in wine has been shown to cause health problems
Wine_preservatives
Chemical compound
ion is unstable in solution towards decomposition to formaldehyde and sulfite. Addition of at least one equivalent of formaldehyde pushes the equilibrium
Rongalite
Chemical compound
fluoride. Strong bases deprotonate bifluoride. For example, calcium hydroxide gives calcium fluoride. Sodium bifluoride is produced by neutralizing waste
Sodium_bifluoride
Systematic method of naming inorganic chemical compounds
ClO− 3 chlorate ClO− 4 perchlorate SO2− 3 sulfite SO2− 4 sulfate S 2O2– 3 thiosulfate HSO− 3 hydrogen sulfite (or bisulfite) HCO− 3 hydrogen carbonate
IUPAC nomenclature of inorganic chemistry
IUPAC_nomenclature_of_inorganic_chemistry
Systematic naming of chemical compounds
sodium, or Na+, and that the anion is the sulfite ion (SO3)2−. Therefore, this compound is named sodium sulfite. If the given formula is Ca(OH)2, it can
Chemical_nomenclature
Chemical elements essential for life
and essential amino acids. The five major minerals in the human body are calcium, phosphorus, potassium, sodium, and magnesium. The remaining minerals are
Mineral_(nutrient)
Species of edible plant
the sulfites in the preservative caused allergic reactions in some people. In 1986, the U.S. Food and Drug Administration banned the use of sulfites on
Celery
Chemical element with atomic number 42 (Mo)
deficient in molybdenum have poorly functioning sulfite oxidase and are prone to toxic reactions to sulfites in foods. The human body contains about 0.07 mg
Molybdenum
American biochemist and food scientist
2-chloroethyl sulfite (Aramite)®: II. Carcinogenicity" 1963: Bernard L. Oser, Mona Oser and Howard C. Spencer, "Safety evaluation studies of calcium EDTA" 1965:
Bernard_L._Oser
Incorporation of sulfur into living organisms
reduction pathway and it has a fast turnover rate. Sulfite is with high affinity reduced by sulfite reductase to sulfide with ferredoxin as a reductant
Sulfur_assimilation
Means by which some organisms create energy
hydrogen sulfide (H2S), elemental sulfur (S0), thiosulfate (S2O32−), and sulfite (SO32−) as electron donors. The oxidation of these substrates is typically
Microbial_oxidation_of_sulfur
Compounds that bind to and activate adrenergic beta-2 receptors
exacerbations and asthma-related hospitalizations. The excipients, in particular sulfite, could contribute to the adverse effects.[citation needed] All[dubious
Beta2-adrenergic_agonist
Chemical compound
osmium disulfide, OsS2, and with sulfurous acid to form potassium osmium sulfite. Potassium osmate is used as a catalyst for the Sharpless dihydroxylation
Potassium_osmate
Protein that contains a metal ion cofactor
changes in the intracellular calcium concentration. In general, when calcium rises, the muscles contract and, when calcium falls, the muscles relax. Troponin
Metalloprotein
Species of fungus
compounds (cysteine, sulfite, and sulfide), grow over a wide pH range (pH 5-11), tolerate elevated environmental levels of calcium; however, P. destructans
Pseudogymnoascus_destructans
Material for writing, printing, etc.
already 90% cellulose. There are three main chemical pulping processes: the sulfite process dates back to the 1840s and was the dominant method before the
Paper
Chemical element with atomic number 19 (K)
ISBN 978-0-470-39267-6. Chichester, C. O. (July 1986). "Uses and Exposure to Sulfites in Food". Advances in food research. Academic Press. pp. 4–6. ISBN 978-0-12-016430-1
Potassium
Chemical process that transforms a latent image into a visible image
bis(4-hydroxy-N-methylanilinium) sulfate with hydroquinone and sodium sulfite. In graphic art film, also called lithographic film which is a special
Photographic_processing
Chemical deactivation of a catalyst
catalyst poisons include carbon monoxide, halides, cyanides, sulfides, sulfites, phosphates, phosphites and organic molecules such as nitriles, nitro compounds
Catalyst_poisoning
River in West Virginia, United States
when sulfite-bearing mineral strata are exposed to air and rainwater, such as when surface mining occurs. The sulfuric acid produced from the sulfite reaction
Blackwater River (West Virginia)
Blackwater_River_(West_Virginia)
Science of paper and papermaking
characterized by two main methods: sulfate (Kraft process) pulping and sulfite pulping, and these two methods have different benefits. Sulfate pulping
Paper_engineering
Hair straightening product
Lastly, in most relaxers sold for home use, the active agents are ammonium sulfite and ammonium bisulfite (the two compounds are interchangeable, depending
Relaxer
Biogeochemical cycle of sulfur
(SO2− 4). Reduction of sulfate and sulfite to sulfide. Disproportionation of sulfur compounds (elemental sulfur, sulfite, thiosulfate) into sulfate and hydrogen
Sulfur_cycle
runoff from the land. There are biogeochemical cycles for the elements calcium, carbon, hydrogen, mercury, nitrogen, oxygen, phosphorus, selenium, and
Marine_biogeochemical_cycles
Chemical compound
peroxide depend on pH. In acidic solutions, H2O2 is a powerful oxidizer. Sulfite (SO2−3) is oxidized to sulfate (SO2−4). Under alkaline conditions, hydrogen
Hydrogen_peroxide
Chemical compound
insecticides, herbicides, and fungicides. There, it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly
Ammonium_sulfate
Chemical compound (H2SO4)
composition may vary. This is treated with 93% sulfuric acid to produce calcium sulfate, hydrogen fluoride (HF) and phosphoric acid. The HF is removed
Sulfuric_acid
Analytical method used to investigate elemental composition of inorganic compounds
PbS. Sulfides also turn solutions of red sodium nitroprusside purple. Sulfites produce SO2 gas, which smells of burning sulfur, when treated with dilute
Qualitative inorganic analysis
Qualitative_inorganic_analysis
Compounds containing at least one radium atom
counterparts. Additionally, radium phosphate, radium oxalate, and radium sulfite are probably also insoluble, as they coprecipitate with the corresponding
Radium_compounds
kraft process and the sulfite process for making wood pulp. Sulfur is generally recovered, with the exception of ammonia-based sulfite processes, but some
Environmental_impact_of_paper
Spice extracted from Vanilla orchids
the pulp used in papermaking, in which the lignin is broken down using sulfites or sulfates. However, vanillin is only one of 171 identified aromatic components
Vanilla
Cost Fortunes Little Naughty Kids Rob Crispy Fries Beryllium, Magnesium, Calcium, Strontium, Barium, Radium Bearded Muggers Came Straight Back Rapidly.
List_of_chemistry_mnemonics
Body composition elements
human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements:
Composition_of_the_human_body
Medical condition
serious underlying condition. Drinking alcohol in addition to consuming calcium cyanamide can cause permanent or long-lasting intolerance (nitrolime disease)
Alcohol_intolerance
Pulp and paper mill in Halden, Norway
opened in 1955. A hydrocyclone facility for the sulfite pulp mill, new 10,000 tonne oil tanks and a calcium carbonate management facility for the paper mill
Norske_Skog_Saugbrugs
Ion, and compounds containing the ion
the oxidation can produce elemental sulfur, polysulfides, polythionates, sulfite, or sulfate. Metal sulfides react with halogens, forming sulfur and metal
Sulfide
State of matter
use a combination of high temperature and alkaline (kraft) or acidic (sulfite) chemicals to break the chemical bonds of the lignin before burning it
Solid
Chemical compound
are cocrystallizations of potassium sulfate and sulfates of magnesium, calcium, and sodium. Relevant minerals are: Kainite, KMg(SO4)·Cl·3H2O Schönite
Potassium_sulfate
Iron (II) disulfide mineral
S2CID 250815717. Wood, Robert (August 1962). "Madelung Constants for the Calcium Carbide and Pyrite Crystal Structures". The Journal of Chemical Physics
Pyrite
Sweet-tasting, water-soluble carbohydrates
Often additives are used to modify the resulting caramels, e.g. alkali or sulfites. Several volatile products evolve in the heating process including butanone
Sugar
Chemical compound
treatment". Bordeaux mixture, a suspension of copper(II) sulfate (CuSO4) and calcium hydroxide (Ca(OH)2), is used to control fungus on grapes, melons, and other
Copper(II)_sulfate
Chemical element with atomic number 88 (Ra)
their barium counterparts. Additionally, radium phosphate, oxalate, and sulfite are probably also insoluble, as they coprecipitate with the corresponding
Radium
arsenate) Albertiniite (IMA2015-004) 4.JE. [173] [no] [no] (IUPAC: iron(II) sulfite trihydrate) Albite (feldspar: 1815) 9.FA.35 [174] [175] [176] (IUPAC: sodium
List of minerals recognized by the International Mineralogical Association (A)
List_of_minerals_recognized_by_the_International_Mineralogical_Association_(A)
French nobleman and chemist (1743–1794)
salts of the "ous" acids terminated with the suffix "ite," as in copper sulfite. The total effect of the new nomenclature can be gauged by comparing the
Antoine_Lavoisier
Chemical compound
Strontium chloride Strontium oxide Strontium sulfite Other cations Beryllium sulfate Magnesium sulfate Calcium sulfate Barium sulfate Except where otherwise
Strontium_sulfate
Class of chemical compounds of nickel
then 700 °C it loses sulfur trioxide, sulfur dioxide and oxygen. Nickel sulfite can be formed by bubbling sulfur dioxide through nickel carbonate suspended
Nickel_oxyacid_salts
Accumulation of brine in a seafloor depression
can oxidize sulfide or thiosulfate to sulfate (with elemental sulfur or sulfite as an intermediate). a sulfide/quinone complex which oxidizes hydrogen
Brine_pool
Poisonous and flammable gas
source of sulfate-bearing material, such as plasterboard or natural gypsum (calcium sulfate dihydrate), under anaerobic conditions sulfate reducing bacteria
Hydrogen_sulfide
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