PRODUCTS

CALCIUM SULFITE

CAS NUMBER: 10257-55-3

EC NUMBER: 233-596-8

MOLECULAR FORMULA: CaSO3

MOLECULAR WEIGHT: 120.14

IUPAC NAME: calcium;sulfite

All forms are white solids.
Calcium Sulfite is most notable as the product of flue-gas desulfurization.

Production:
Calcium Sulfite is produced on a large scale by flue gas desulfurization (FGD).
When coal or other fossil fuel is burned, the byproduct is known as flue gas.

Flue gas often contains SO2, whose emission is often regulated to prevent acid rain.
Sulfur dioxide is scrubbed before the remaining gases are emitted through the chimney stack.

An economical way of scrubbing SO2 from flue gases is by treating the effluent with Ca(OH)2 hydrated lime or CaCO3 limestone.
Scrubbing with limestone follows the following idealized reaction:

SO2 + CaCO3 → CaSO3 + CO2

Scrubbing with hydrated lime follows the following idealized reaction:

SO2 + Ca(OH)2 → CaSO3 + H2O

The resulting calcium sulfite oxidizes in air to give gypsum:

O2 + 2 CaSO3 → 2 CaSO4

The gypsum, if sufficiently pure, is marketable as a building material.

USES:
*Drywall:
Calcium Sulfite is generated as the intermediate in the production of gypsum, which is the main component of drywall.
A typical US home contains 7 metric tons of such drywall gypsum board.

*Food additive:
As a food additive Calcium Sulfite is used as a preservative under the E number E226.
Along with other antioxidant sulfites, Calcium Sulfite is commonly used in preserving wine, cider, fruit juice, canned fruit and vegetables.
Sulfites are strong reducers in solution, they act as oxygen scavenger antioxidants to preserve food, but labeling is required as some individuals might be hypersensitive.

*Wood pulp production:
Chemical wood pulping is the removal of cellulose from wood by dissolving the lignin that binds the cellulose together.
Calcium Sulfite can be used in the production of wood pulp through the sulfite process, as an alternative to the Kraft process that uses hydroxides and sulfides instead of sulfites.
Calcium Sulfite was used, but has been largely replaced by magnesium and sodium sulfites and bisulfites to attack the lignin.

*Gypsum:
There is a possibility to use Calcium Sulfite to produce gypsum by oxidizing (adding O2) it in water mixture with the manganese (Mn2+) cation or sulfuric acid catalyzers.

A major use of Calcium Sulfite in the past has been the use of “lime” (Ca(OH)2) in “flue-gas” desulphurization (removal of SO2 gas) at “fossil-fuel” electrical power generating plants.
Since Calcium Sulfite is relatively insoluble in water

Calcium Sulfite can be removed from the slurry by filtration and converted to gypsum, CaSO4·2H2O.
The other usage of Calcium Sulfite or bisulfite compounds has been in the “wood-pulping” industry.

Calcium Sulfite's Structure:
The structure of Calcium Sulfite has been examined by X-ray crystallography.

These studies show that sulfite anion adopts its characteristic pyramidal geometry.
The Ca2+ centers have high coordination numbers, being bonded to the sulfite oxygen atoms and the water, giving calcium a coordination number of eight.

The tetrahydrate crystallizes as a solid solution of Ca3(SO3)2(SO4).12H2O and Ca3(SO3)2(SO3).12H2O.
The mixed sulfite-sulfate represents an intermediate in the oxidation of the sulfite to the sulfate, as is practiced in the production of gypsum.
This solid solution consists of [Ca3(SO3)2(H2O)12]2+ cations and either sulfite or sulfate as the anion.

Calcium Sulfite is a chemical compound used in water treatment and remediation and as a preservative in food.
Calcium Sulfite is generally immediately available in most volumes, including bulk quantities.

Calcium Sulfite is most notable as the product of flue-gas desulfurization.
Calcium Sulfite,CaS03·O.5H20, is colorless

Calcium Sulfite is hexagonal crystals which are nearly insoluble in water.
Calcium Sulfite is formed when sulfur dioxideis passed through a solution of calcium hydroxide, or when solutions of calcium salts and alkali sulfites are mixed.

Calcium Sulfite is used as a disinfectant in the sugar industry and breweries, to preserve fruit juices
Calcium Sulfite is used as an antichlorine in textile bleaches.

Preparation:
Calcium Sulfite can be prepared by the reaction of sodium sulfite with calcium chloride:
CaCl2＋ Na2SO3→CaSO3＋ 2NaCl

The dihydrate, CaSO3·2H2O is formed.
This salt is white powder that is soluble in dilute sulfurous acid to form the bisulfite.

Calcium Sulfite may be dehydrated at 150°C to form the anhydrous salt.
Calcium Sulfite is used in the sulfite process for the manufacture of wood pulp.

Calcium Sulfite is a white powder that is insoluble in water but soluble in alcohols or acids.
Calcium Sulfite is also known as Calcium sulfite, Calcium salt or Sulfurous acid, calcium salt.

Calcium Sulfite is a white powder that is insoluble in water but soluble in alcohol or acids.
Calcium Sulfite has a molecular weight of 120.14g/mol

Calcium Sulfite's melting point is 600°C
Calcium Sulfite's solubility in water is 4.3 grams per 100 milliliters at 18°C
Calcium Sulfite's exact mass is 119.9194059

Calcium Sulfite's monoisotopic mass is 119.9194059
Calcium Sulfite's Hydrogen Bond Acceptor Count is 4

Calcium Sulfite's Rotatable Bond Count is 0
Calcium Sulfite's Hydrogen Bond Donor Count is 0
Covalently-Bonded Unit Count is 2

Calcium Sulfite does not have any chiral centers
Calcium Sulfite has a density of 3.01 grams per cubic centimeter

Calcium Sulfite's refractive index is 1.590, 1.595, 1.628
Calcium Sulfite's CAS registry number is 10257-55-3

The Calcium Sulfite chemical formula is CaSO3.
This means that for every molecule of Calcium Sulfite, there are 3 atoms of sulfur, 3 atoms of oxygen, and 2 atoms of calcium.

APPLICATIONS OF CALCIUM SULFITE:
Calcium Sulfite has several uses.
They include:

-Paper Manufacturing:
Calcium Sulfite is used in the production of paper because it helps prevent the formation of lumps and improves the strength of the paper.
Calcium Sulfite also helps to remove any unwanted colors from the paper.

-Manufacturing Printing Inks:
Calcium Sulfite is also used in printing inks to improve the ink's strength and prevent it from fading.

-Preservative:
Calcium Sulfite is often used as a preservative because it helps to protect against bacteria, fungi, and molds.
Calcium Sulfite also helps to extend the shelf life of food products.

-Reducing Agent:
Calcium Sulfite can be used as a reducing agent in chemical synthesis.
Calcium Sulfite helps to convert aldehydes and ketones into alcohol.

-Soil Fertilization:
Calcium sulfite has several uses in agriculture.
It is often used to fertilize soils because of its ability to lower the soil's pH value.
This helps to make phosphorus more available to plants.
Calcium Sulfite can also decrease the sodium content in soils, making it beneficial for growing certain crops.

-Manufacture Of Glass:
Glass manufacturers use Calcium Sulfite to remove the greenish tinge from glass.
The Calcium Sulfite and sodium carbonate reactions form sodium sulfite and sodium bisulfite.
This reaction forms a molten glass that eventually becomes a solid.
Calcium Sulfite also helps reduce the amount of soda ash used in the manufacture of glass.

-Manufacture of Soaps:
Calcium Sulfite is also used in the manufacture of soaps.
Calcium Sulfite helps to produce a more rigid bar of soap, and it also helps to remove any unwanted colors from the soap.

-Sugar Manufacturing:
In sugar manufacturing, Calcium Sulfite is used to extract excess lime from a mixture.
It also helps to remove sulfur dioxide from a polyphosphoric acid before an esterification reaction occurs between this substance and glucose.

-Conclusion:
Calcium Sulfite chemical formula has many uses in various industries.
Typically, the compound is a vital part of producing different items such as

*paper

*printing ink

*glass

*soap

*sugar

Calcium Sulfite is a white calcium salt CaSO3 prepared as a powder
And Calcium Sulfite is used especially as a disinfectant and preservative

Functions:
-Antioxidant: Calcium Sulfite Reduces oxidation to prevent the formation of free radicals which may be harmful to health.
-Preservative: Calcium Sulfite Prevents and inhibits the growth of unwanted microorganisms which may be harmful

As a food additive, Calcium Sulfite is used as a preservative under the E number E226.
Along with other antioxidant sulfites, Calcium Sulfite is commonly used in:

-preserving wine

-cider

-fruit juice

-canned fruit

-vegetables

Sulfites are strong reducers in solution, they act as oxygen scavenger antioxidants to preserve food, but labeling is required as some individuals might be hypersensitive.
Calcium Sulfite is approved to used as food additive in EU and US.

Calcium Sulfite, or calcium sulphite, is a chemical compound which is the calcium salt of sulfurous acid with the molecular formula CaSO3.
Calcium Sulfite is a chemical compound which is the calcium salt of sulfurous acid.

As a food additive Calcium Sulfite is used as a preservative.
Calcium Sulfite is commonly used in preserving wine, cider, fruit juice, canned fruit and vegetables.

Like other metal sulfites, calcium sulfite reacts with acids to produce a calcium salt, sulfur dioxide gas and water.
For this reason, Calcium Sulfite is not a desirable compound in drywall - when humid, it releases sulfur dioxide and carbon dioxide is absorbed to form calcium carbonate.

PHYSICAL PROPERTIES:

-Molecular Weight: 120.14

-Exact Mass: 119.9194059

-Monoisotopic Mass: 119.9194059

-Topological Polar Surface Area: 82.4 Å²

-Melting Point: 600°C

-Physical Description: White crystals or white crystalline powder

-Color: White

-Form: Powder

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, the hemihydrate and the tetrahydrate, respectively CaSO3·½(H2O) and CaSO3·4(H2O).
All forms are white solids.
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, the hemihydrate and the tetrahydrate, respectively CaSO3·½(H2O) and CaSO3·4(H2O).
Calcium Sulfite is most notable as the product of flue-gas desulfurization.

Calcium Sulfite is most notable as the product of flue-gas desulfurization.
Calcium Sulfite,CaS03·O.5H20, is colorless
Calcium Sulfite is hexagonal crystals which are nearly insoluble in water.

Calcium Sulfite is formed when sulfur dioxideis passed through a solution of calcium hydroxide, or when solutions of calcium salts and alkali sulfites are mixed.
Calcium Sulfite is used as a disinfectant in the sugar industry and breweries, to preserve fruit juices
Calcium Sulfite is used as an antichlorine in textile bleaches.

CHEMICAL PROPERTIES:

-Hydrogen Bond Donor Count: 0

-Hydrogen Bond Acceptor Count: 4

-Rotatable Bond Count: 0

-Heavy Atom Count: 5

-Formal Charge: 0

-Complexity: 18.8

-Isotope Atom Count: 0

-Defined Atom Stereocenter Count: 0

-Undefined Atom Stereocenter Count: 0

-Defined Bond Stereocenter Count: 0

-Undefined Bond Stereocenter Count: 0

-Covalently-Bonded Unit Count: 2

-Compound Is Canonicalized: Yes

Calcium Sulfite may be dehydrated at 150°C to form the anhydrous salt.
Calcium Sulfite is used in the sulfite process for the manufacture of wood pulp.

Calcium Sulfite is a white powder that is insoluble in water but soluble in alcohols or acids.
Calcium Sulfite is also known as Calcium sulfite, Calcium salt or Sulfurous acid, calcium salt.
Calcium Sulfite does not have any chiral centers

Calcium Sulfite has a density of 3.01 grams per cubic centimeter
Calcium Sulfite's refractive index is 1.590, 1.595, 1.628
Calcium Sulfite's CAS registry number is 10257-55-3
The Calcium Sulfite chemical formula is CaSO3.

This means that for every molecule of calcium sulfite, there are 3 atoms of sulfur, 3 atoms of oxygen, and 2 atoms of calcium.
Calcium Sulfite is a white powder that is insoluble in water but soluble in alcohol or acids.

Calcium Sulfite has a molecular weight of 120.14g/mol
Calcium Sulfite's melting point is 600°C

Calcium Sulfite's solubility in water is 4.3 grams per 100 milliliters at 18°C
Calcium Sulfite's exact mass is 119.9194059

SYNONYMS:

Calcium sulfite
Calcium sulphite
Sulfurous acid, calcium salt (1:1)
calcium;sulfite
Calciumsulfite
UNII-7078964UQP
7078964UQP
Calciumsulfit
EINECS 233-596-8
EC 233-596-8
FT-0623415