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Chemical derived from gypsum used in food and industry
Calcium sulfate (or calcium sulphate) is an inorganic salt with the chemical formula CaSO 4. It occurs in several hydrated forms; the anhydrous state
Calcium_sulfate
Soft calcium sulfate mineral
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer
Gypsum
Chemical substance
Biphasic calcium sulfate is a granulated powder composed of calcium sulfate hydrate (CaSO4•2H2O) and calcium sulfate hemihydrate (CaSO4•1/2H2O).[citation
Biphasic_calcium_sulfate
Chemical compound
calcium sulfite into calcium sulfate after..." ResearchGate. Retrieved 2018-05-18. Yasue, Tamotsu; Arai, Yasuo (1986). "Crystal Structure of Calcium Sulfite"
Calcium_sulfite
Anion of sulfur with 4 oxygen atoms
give metal sulfates. There are numerous examples of ionic sulfates, many of which are highly soluble in water. Exceptions include calcium sulfate, strontium
Sulfate
Chemical compound with formula MgSO4
Other inorganic sulfate salts such as sodium sulfate and calcium sulfate may be used in the same way. One study found that magnesium sulfate is superior to
Magnesium_sulfate
Solid substance containing one water molecule per two unit cells
An example of this is calcium sulfate hemihydrate (CaSO4·0.5H2O or 2CaSO4·H2O), which is the hemihydrate of calcium sulfate (CaSO4). Kent, James A.
Hemihydrate
Chemical compound
aluminium sulfate of specific gravity 1.16 is prepared. This solution is allowed to stand for some time (in order that any calcium sulfate and basic iron(III)
Aluminium_sulfate
anion) Bentonite clay Calcium chloride Calcium hydride Calcium oxide Calcium sulfate (Drierite) Cobalt(II) chloride Copper(II) sulfate Lithium chloride Lithium
List_of_desiccants
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
Panel made of gypsum, used in interior construction
board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (gypsum), with or without additives, typically extruded between
Drywall
Chemical compound naturally occurring as the mineral larnite
acid from anhydrous calcium sulfate produces calcium silicates. Upon being mixed with shale or marl, and roasted at 1400 °C, the sulfate liberates sulfur
Calcium_silicate
Soy-based food used as a protein source
repulsive electrostatic charges, and protein aggregates are formed. Calcium sulfate (gypsum) (Chinese: 石膏; pinyin: shígāo) is the traditional and most
Tofu
Accumulation of unwanted material on solid surfaces
salts, oxides, and hydroxides from water solutions (e.g., calcium carbonate or calcium sulfate) Particulate fouling, i.e., accumulation of particles, typically
Fouling
Damage to concrete affecting its mechanical strength and its durability
Unlike the common sulfate attack, in which the calcium hydroxide (portlandite) and calcium aluminate hydrates react with sulfates to respectively form
Concrete_degradation
Historical scientific theory
mixture of equal stoichiometric amounts of anhydrite [i.e., anhydrous calcium sulfate] and barite.) — Ferdinand Wurzer By 1829, Döbereiner had found other
Döbereiner's_triads
Addition of a sulfate group to a compound
CaSO4 or the net reaction is sulfation, the addition of SO3: CaO + SO3 → CaSO4 In the idealized scenario, the calcium sulfate (gypsum) is used as a construction
Sulfation
Sulfate mineral
nodules consisting of the calcium sulfates gypsum or anhydrite. Calcium sulfate is sparingly soluble, but strontium sulfate is mostly insoluble. Strontium-bearing
Celestine_(mineral)
Calcium carbonate based concretion of sediment
chalcedony, opal, and soda niter. A similar material, composed of calcium sulfate rather than calcium carbonate, is called gypcrust. Caliche forms where annual
Caliche
Process in petroleum processing
Examples of oilfield scales are calcium carbonate (limescale), iron sulfides, barium sulfate and strontium sulfate. Scale inhibition encompasses the
Oilfield_scale_inhibition
Chemical compound of formula CaS
surrounded by six S2− ions. CaS is produced by carbothermic reduction of calcium sulfate, which entails the conversion of carbon, usually as charcoal, to carbon
Calcium_sulfide
Chemical compound (H2SO4)
H2O}}\longrightarrow {\underset {{\text{calcium sulfate}} \atop {\text{dihydrate}}}{{\ce {5 CaSO4*2H2O}}}}+{\ce {HF + 3 H3PO4}}} Ammonium sulfate, an important nitrogen
Sulfuric_acid
Calcium sulfate mineral
Bassanite is a sulfate mineral composed of calcium sulfate hemihydrate, with the chemical formula CaSO4·0.5H2O or 2CaSO4·H2O. It has half a water molecule
Bassanite
Mineral, anhydrous calcium sulfate
Anhydrite, or anhydrous calcium sulfate, is a mineral with the chemical formula CaSO4. It is in the orthorhombic crystal system, with three directions
Anhydrite
Chemical element with atomic number 16 (S)
sulfide); and the sulfate minerals, such as gypsum (calcium sulfate), alunite (potassium aluminium sulfate), and barite (barium sulfate). On Earth, just
Sulfur
Firm variety of tofu
is firm whereas tofu is soft. It is made from soybeans with added calcium sulfate, and sometimes flavored with salt, soy sauce, and five-spice powder
Dougan
Borough of Rosignano Marittimo, Tuscany, Italy
Spiagge bianche), whose sand is formed by limestone (calcium carbonate) (90%) and calcium sulfate (10%) due the soda ash production of the nearby Solvay
Rosignano_Solvay
Manmade calcium sulfate hydrate by-product
Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer, particularly phosphoric acid, from phosphate
Phosphogypsum
Chemical compound
E263. Tofu is traditionally obtained by coagulating soy milk with calcium sulfate. Calcium acetate has been found to be a better alternative; being soluble
Calcium_acetate
The architecture of Qatar, similarly to other Persian Gulf nations, is strongly influenced by Islamic architecture. Qatari architecture has retained its
Architecture_of_Qatar
Chemical compound
inorganic compounds, such as calcium hydroxide (portlandite, an important mineral phase of hydrated cement paste), the calcium sulfates (gypsum, bassanite, and
Lithium_sulfate
Rapidly setting hydraulic cements
So, CAC cement must not be confused with calcium sulfo-aluminate (CSA) cement containing calcium sulfate and invented later in 1936. The main constituent
Calcium_aluminate_cements
Chemical compound
calcium chlorate and sulfuric acid react to give a precipitate of calcium sulfate and chloric acid in solution: Ca(ClO3)2 + H2SO4 → 2 HClO3 + CaSO4 Contact
Calcium_chlorate
Capacity of a substance to dissolve in a homogeneous way
calcium sulfate (gypsum) and cerium(III) sulfate, become less soluble in water as temperature increases (ΔH < 0). This is also the case for calcium hydroxide
Solubility
Type of radiation dosimeter
response to ionizing radiation include calcium fluoride, lithium fluoride, calcium sulfate, lithium borate, calcium borate, potassium bromide, and feldspar
Thermoluminescent_dosimeter
Device for culturing microorganisms
(containing cellulose), egg-shells (containing calcium carbonate), and a sulfur source such as calcium sulfate or whole blended eggs. Incubating the column
Winogradsky_column
Chemical compound
Calcium gluconate is the calcium salt of gluconic acid and is used as a mineral supplement and medication. As a medication it is used by injection into
Calcium_gluconate
Transparent variety of gypsum
gypsum, including selenite, satin spar, and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical
Selenite_(gypsum)
Mexican mine renowned for its giant gypsum crystals
during mining operations contain gigantic crystals of CaSO 4 · 2 H 2O (calcium sulfate dihydrate, gypsum, also sometimes called selenite). Peñoles announced
Naica_Mine
and sulfate. Different tissues contain calcium in different concentrations. For instance, Ca2+ (mostly calcium phosphate and some calcium sulfate) is
Calcium_in_biology
Monoclinic sodium calcium sulfate mineral
Glauberite is a monoclinic sodium calcium sulfate mineral with the formula Na2Ca(SO4)2. It was first described in 1808 for material from the El Castellar
Glauberite
Putty that fills small holes in walls and ceilings
Typically, spackling is composed of gypsum plaster from hydrated calcium sulfate and glue. Spackle is an abandoned trademark of the Muralo Company,
Spackling_paste
sulfate – Cf2(SO4)3 Californium(III) sulfide – Cf2S3 Californium oxyfluoride – CfOF Californium oxychloride – CfOCl Calcium bromide – CaBr2 Calcium carbide
List_of_inorganic_compounds
Granular material composed of finely divided rock and mineral particles
as in the Caribbean. Somewhat more rarely, sand may be composed of calcium sulfate, such as gypsum and selenite, as is found in places such as White Sands
Sand
Sedimentary mineral
Polyhalite is an evaporite mineral, a hydrated sulfate of potassium, calcium and magnesium with formula: K2Ca2Mg(SO4)4·2H2O. Polyhalite crystallizes in
Polyhalite
Chemical compound
Ammonium sulfate also is manufactured from gypsum (CaSO4·2H2O). Finely divided gypsum is added to an ammonium carbonate solution. Calcium carbonate precipitates
Ammonium_sulfate
Chemical compound
Calcium nitrate is an inorganic compound with the formula Ca(NO3)2. It forms hydrates Ca(NO3)2·xH2O. The anhydrous compound, which is rarely encountered
Calcium_nitrate
Chemical element with atomic number 20 (Ca)
or the alkali metals. All four dihalides of calcium are known. Calcium carbonate (CaCO3) and calcium sulfate (CaSO4) are particularly abundant minerals
Calcium
Uncommon potassium calcium sulfate mineral
Syngenite is an uncommon potassium calcium sulfate mineral with formula K2Ca(SO4)2·H2O. It forms as prismatic monoclinic crystals and as encrustations
Syngenite
Topics referred to by the same term
chalk, a material used for writing and art, usually composed of calcium sulfate or calcium carbonate. Chalk (band), post-punk industrial dance duo from Belfast
Chalk_(disambiguation)
Italian chemical company
Here aluminum fluoride, sulfuric acid, synthetic cryolite, calcium fluoride and calcium sulfate are produced under the Gypsos brand. Aluminum fluoride is
Fluorsid
Low-permeable marine geological formation
leading to the formation of relatively soluble gypsum (CaSO4·2H2O, calcium sulfate dihydrate). This latter is more soluble and mobile than iron oxides
London_Clay
Broad range of building and sculpture materials
plaster, also known as plaster of Paris, is a white powder consisting of calcium sulfate hemihydrate. The natural form of the compound is the mineral bassanite
Plaster
Inorganic compound of formula Ca(OH)2
surface. Calcium hydroxide reacts with hydrochloric acid to give calcium hydroxychloride and then calcium chloride. In a process called sulfation, sulphur
Calcium_hydroxide
Term for a class of cheeses
benzoyl peroxide or a mixture of benzoyl peroxide with potassium alum, calcium sulfate, and magnesium carbonate but, in that case, vitamin A must be added
Romano_cheese
Hydrous calcium sulfo-aluminate
Ettringite is a hydrous calcium aluminium sulfate mineral with formula: Ca6Al2(SO4)3(OH)12·26H2O. It is a colorless to yellow mineral crystallizing in
Ettringite
Structure formed in a cave by the deposition of minerals from water
calcareous, composed of calcium carbonate (CaCO3) minerals (calcite or aragonite). Less commonly, speleothems are made of calcium sulfate (gypsum or mirabilite)
Speleothem
Natural form of anhydrous calcium sulfoaluminate
the cement chemist notation (CCN). On hydration in the presence of calcium and sulfate ions, it forms the insoluble, fibrous mineral ettringite, which provides
Ye'elimite
Mexican-American boxer (born 1978)
incident where he was caught with illegal hand wraps containing gypsum (calcium sulfate) which, when combined with moisture, forms plaster of Paris. His signature
Antonio_Margarito
Dye extracted from certain lichens
is carried out in the presence of potassium carbonate, calcium hydroxide, and calcium sulfate (in the form of potash, lime, and gypsum in traditional
Orcein
Martian rock noted for its potential life signs
rover in Jezero crater. Cheyava Falls is characterized by large white calcium sulfate veins and bands of reddish material, indicative of hematite, a mineral
Cheyava_Falls
Writing implement
is typically large and thick sticks of chalk made of calcium sulfate (gypsum), instead of calcium carbonate (rock chalk). It comes in multiple colors and
Sidewalk_chalk
Barium sulfate mineral
consists of baryte, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate). Baryte and celestine form a solid solution
Baryte
Transfer of calcium between dissolved and solid phases
weathering of calcium sulfate, calcium silicate, and calcium carbonate, basalt-seawater reaction, and dolomitization. Biogenic calcium carbonate is formed
Calcium_cycle
Chemical compound
algicidal treatment". Bordeaux mixture, a suspension of copper(II) sulfate (CuSO4) and calcium hydroxide (Ca(OH)2), is used to control fungus on grapes, melons
Copper(II)_sulfate
Substance used to induce or sustain dryness
this purpose. Other common desiccants include activated charcoal, calcium sulfate, calcium chloride, and molecular sieves (typically, zeolites). Desiccants
Desiccant
Class of cnidarians distinguished by their cube-shaped medusae
stages. It has been found that the statoliths, which are composed of calcium sulfate hemihydrate, exhibit clear sequential incremental layers, thought to
Box_jellyfish
Chemical compound
mostly gypsum, hydrated calcium sulfate CaSO4·2H2O. Calcium carbonate is a main source for growing biorock. Precipitated calcium carbonate (PCC), pre-dispersed
Calcium_carbonate
Chemical compound
reacting calcium hydroxide with sodium bromate or calcium sulfate with barium bromate. Above 180 °C, calcium bromate decomposes to form calcium bromide
Calcium_bromate
Chart describing whether ionic compounds dissolve or precipitate
mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate. For compounds with multiple hydrates
Solubility_chart
Chemical compound that produces coloured flames
toy fireworks as a substitute for strontium. Orange Calcium chloride CaCl2 Orange Calcium sulfate CaSO4 High-temperature oxidizer. Excellent orange source
Pyrotechnic_colorant
Water that has a high mineral content
chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates. Drinking hard water may have moderate health
Hard_water
Change in energy from formation of 1 mole of substance
Solid Ca(OH)2 −897.5 Calcium oxide Solid CaO −603.3 Calcium sulfate Solid CaSO4 −1309.1 Calcium sulfide Solid CaS −477.4 Carbon Carbon (graphite) Solid
Standard Gibbs free energy of formation
Standard_Gibbs_free_energy_of_formation
Aluminate Ferrite monosubstituted or calcium aluminate monosubstituted
3CaO·Al2O3, or C3A in CCN, reacts with dissolved calcium sulfate (CaSO4), or calcium carbonate (CaCO3). As the sulfate form is the dominant one in AFm phases in
AFm_phases
Surface reactive glass-ceramic biomaterial
bone grafting biomaterials (e.g., hydroxyapatite, biphasic calcium phosphate, calcium sulfate), in that it is the only one with anti-infective and angiogenic
Bioactive_glass
Calcium oxides and/or hydroxides
ferrous sulfate. The rocks and minerals from which these materials are derived, typically limestone or chalk, are composed primarily of calcium carbonate
Lime_(material)
Chemical compound
Stassfurt salt. These are cocrystallizations of potassium sulfate and sulfates of magnesium, calcium, and sodium. Relevant minerals are: Kainite, KMg(SO4)·Cl·3H2O
Potassium_sulfate
Group of chemical elements
by preparing it from lime. Calcium sulfate has been known to be able to set broken bones since the tenth century. Calcium itself, however, was not isolated
Alkaline_earth_metal
Chemical compound
Strontium sulfate (SrSO4) is the sulfate salt of strontium. It is a white crystalline powder and occurs in nature as the mineral celestine. It is very
Strontium_sulfate
American mineral water
elements, in amounts of 100 or more micrograms per liter: lithium, calcium, sulfate, magnesium, potassium, silica, and sodium. The brand is owned by Lithia
Lithia_(water_brand)
Chemical compound
aqueous solution. When calcium bisulfite reacts with the surrounding air, a crystalline precipitate will form composed of calcium sulfate dihydrate.[citation
Calcium_bisulfite
Topics referred to by the same term
Wiktionary, the free dictionary. Gypsum is a soft mineral composed of calcium sulfate dihydrate. Gypsum may also refer to: Gypsum, Bhutan, a village Gypsum
Gypsum_(disambiguation)
Topography from dissolved soluble rocks
+ 2 H3O+ → Ca2+ + H2CO3 + 2 H2O (calcium carbonate dissolution) Ca2+ + SO2−4 → CaSO4 (formation of calcium sulfate) CaSO4 + 2 H2O → [CaSO4·2H2O] (formation
Karst
Water purification process
concentrations of substances including arsenic, fluoride, radium, sulfate, calcium, magnesium, potassium and nitrate. The contaminants removed vary between
Reverse_osmosis
Binder used as basic ingredient of concrete
essentially of crystalline hydraulic calcium silicates, and usually containing one or more of the following: water, calcium sulfate, up to 5 % limestone, and processing
Portland_cement
Chemicals used in paper manufacturing
binder material or to improve some properties of the paper. China clay, calcium carbonate, titanium dioxide, and talc are common mineral fillers used in
Paper_chemicals
Purported primordial substance
earlier collected sample. He noticed that it was a precipitate of calcium sulfate from the seawater that had reacted with the preservative liquid (alcohol)
Bathybius_haeckelii
Particles coming out of suspension as flakes
reversed by removing calcium by adding phosphate to form insoluble calcium phosphate, adding excess sulfate to form insoluble calcium sulfate, or adding EDTA
Flocculation
Hardened layer of soil with a high percentage of gypsum
gypcrust is a hardened layer of soil, consisting of around 95% gypsum (calcium sulfate). Gypcrust is an arid zone duricrust. It can also occur in a semiarid
Gypcrust
– Calcium Oxide; was also used to refer to other metal oxides. Chalcanthum – The residue produced by strongly roasting Blue Vitriol (Copper Sulfate);
List_of_alchemical_substances
Hot springs in Hakone, Kanagawa, Japan
Lake Ashi, which is the caldera of Mt. Hakone. The sulfate-rich waters here contain much sodium, calcium, and magnesium. Ōwakudani Onsen is a geothermal
Hakone_Onsen
Soft carbonate rock
may use mineral chalk, other mineral sources of calcium carbonate, or the mineral gypsum (calcium sulfate). While gypsum-based blackboard chalk is the lowest
Chalk
Compound associated with Portland cement
this, Portland-type cements include a small addition of calcium sulfate (typically 4-8%). Sulfate ions in solution lead to the formation of an insoluble
Tricalcium_aluminate
Chemical compound with formula Na2SO4
a calcium sodium sulfate mineral. Both minerals are less common than mirabilite.[citation needed] About one third of the world's sodium sulfate is produced
Sodium_sulfate
Volcanic eruption in the Philippines
plagioclase, but an unusual phenocryst mineral was also present—the calcium sulfate called anhydrite. The dacite magma was more oxidized than most magmas
1991 eruption of Mount Pinatubo
1991_eruption_of_Mount_Pinatubo
Hardened body part
use of the term in paleontology is to describe hollow calcium carbonate, calcium sulfate or calcium phosphate plates grown as body armor by a number of
Sclerite
Branch of medicine pertaining to the endocrine system
of Gleditsia sinensis) to extract hormones, but gypsum (containing calcium sulfate) was also known to have been used. Although most of the relevant tissues
Endocrinology
Fermented dairy product
food starch, sodium phosphate, sodium citrate, guar gum, carrageenan, calcium sulfate, potassium sorbate, and locust bean gum. The manufacturing of sour
Sour_cream
Quantitative determination of a chemical species based on its mass
give the sulfate: 2 HSO−4 + Ba2+ → BaSO4 + 2 H+ To determine the amount of calcium in water, excess of oxalic acid will precipitate calcium oxalate according
Gravimetric_analysis
Plaster formulation
cement and Parian cement. It is a calcined formulation of regular calcium sulfate plaster with an alum admixture. The compound gives a hard finish that
Keene's_cement_plaster
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