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471-34-1

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471-34-1 Usage

Chemical Properties

White powder

Uses

Manufacture of paint, rubber, plastics, etc.

Production Methods

Calcium carbonate is obtained from natural limestone deposits. The purified compound, known as precipitated calcium carbonate, is synthesized from limestone. Limestone is calcined to calcium oxide and carbon dioxide in a kiln. The products are recombined after purification. Calcium oxide is hydrated  with water to give a slurry called milk of lime, which is then carbonated by bubbling CO2 through it. The reactions involved in the process are as follows:
CaCO3 CaO + CO2
CaO + H2O Ca(OH)2
Ca(OH)2+ CO2→CaCO3+ H2O
The crystal sizes required for various commercial applications may be controlled by temperature, pH, concentrations, and mixing rate.
Calcium carbonate also may be precipitated by mixing solutions of calcium chloride and sodium carbonate.

Reactions

Calcium carbonate decomposes to calcium oxide and CO2 on heating. Treatment with dilute mineral acids produces corresponding calcium salts with liberation of CO2:
CaCO3+ 2HCl →CaCl2+ H2O + CO2
In the presence of CO2 it dissolves in water with the formation of bicarbonate:
CaCO3+ H2O + CO2→Ca2++ 2HCO3 ¯
It is reduced to calcium carbide when heated with coke or anthracite in an electric furnace:
2CaCO3+ 5C→(high temperature)→2CaC2+ 3CO2

Definition

ChEBI: A calcium salt with formula CCaO3.

Description

Calcium carbonate occurs in nature as limestone in various forms, such as marble, chalk, and coral. It is probably the most widely-used raw material in the chemical industry. It has numerous applications, primarily to produce cement, mortars, plasters, refractories, and glass as building materials. It also is used to produce quicklime, hydrated lime and a number of calcium compounds. It is produced either as powdered or precipitated calcium carbonate. The latter consists of finer particles of greater purity and more uniform size. They also have many important commercial applications. Various grades of precipitated calcium carbonate are used in several products, such as textiles, papers, paints, plastics, adhesives, sealants, and cosmetics.

Brand name

Cal-Sup (3M Pharmaceuticals); Children’s Mylanta Upset Stomach Relief (Johnson & Johnson-Merck Consumer); Chooz (Schering- Plough HealthCare); Mylanta Soothing Lozenges (Johnson & Johnson-Merck Consumer).

Chemical Properties

Calcium carbonate occurs in two forms—hexagonal crystal known as calcite, and orthorhombic form, aragonite. Calcite decomposes on heating at 825°C, aragonite melts at 1,339°C (at 102.5 atm). Density 2.71 g/cm3 (calcite), 2.83 g/cm3 (aragonite); insoluble in water (15mg/L at 25°C); Ksp 4.8x10–9 ; soluble in dilute mineral acids.
InChI:InChI=1/CH2O3.Ca.2H/c2-1(3)4;;;/h(H2,2,3,4);;;/p-2/rCH2O3.CaH2/c2-1(3)4;/h(H2,2,3,4);1H2/p-2

471-34-1 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (21067)  Calciumcarbonate  certified reference material for titrimetry, certified by BAM, according to ISO 17025, ≥99.5% 471-34-1 21067-25G 1,834.56CNY Detail
Sigma-Aldrich (21069)  Calciumcarbonate  tested according to Ph.Eur. 471-34-1 21069-1KG 573.30CNY Detail
Sigma (21061)  Calciumcarbonate  BioUltra, precipitated, ≥99.0% (KT) 471-34-1 21061-1KG-F 3,162.51CNY Detail
Sigma (21061)  Calciumcarbonate  BioUltra, precipitated, ≥99.0% (KT) 471-34-1 21061-250G-F 943.02CNY Detail
Sigma (21061)  Calciumcarbonate  BioUltra, precipitated, ≥99.0% (KT) 471-34-1 21061-50G-F 273.78CNY Detail
Sigma (C5929)  Calciumcarbonate  BioReagent, suitable for insect cell culture, ≥99.0% 471-34-1 C5929-500G 479.70CNY Detail
Sigma (C5929)  Calciumcarbonate  BioReagent, suitable for insect cell culture, ≥99.0% 471-34-1 C5929-100G 299.52CNY Detail
Sigma-Aldrich (C4830)  Calciumcarbonate  BioXtra, ≥99.0% 471-34-1 C4830-500G 1,890.72CNY Detail
Sigma-Aldrich (C4830)  Calciumcarbonate  BioXtra, ≥99.0% 471-34-1 C4830-100G 525.33CNY Detail
Sigma-Aldrich (NISTRM8543)  NBS 18 (carbon isotopes in carbonatite)  NIST® RM 8543 471-34-1 NISTRM8543 9,860.76CNY Detail
USP (1086403)  Calcium Carbonate (AS)  United States Pharmacopeia (USP) Reference Standard 471-34-1 1086403-1G 4,662.45CNY Detail
Aldrich (310034)  Calciumcarbonate  powder, ≤30 μm particle size, 98% 471-34-1 310034-500G 898.56CNY Detail

471-34-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name calcium carbonate

1.2 Other means of identification

Product number -
Other names Calcium carbonate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Processing Aids and Additives
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:471-34-1 SDS

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