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239216

Sigma-Aldrich

Carbonato di calcio

Calcium carbonate

ACS reagent, ≥99.0%, powder

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About This Item

Formula condensata:
CaCO3
Numero CAS:
471-34-1
Peso molecolare:
100.09
Beilstein:
8008338
Numero CE:
207-439-9
Numero MDL:
MFCD00010906
Codice UNSPSC:
12352300
ID PubChem:
329752519
NACRES:
NA.21
Prezzi e disponibilità al momento non sono disponibili

Grado

ACS reagent

Saggio

≥99.0%

Stato

powder

Impurezze

≤0.002 meq/g water-soluble titr. base
≤0.005% oxidizers
≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl

pH

8

Densità

2.93 g/mL at 25 °C (lit.)

Anioni in tracce

chloride (Cl-): ≤0.001%
fluoride (F-): ≤0.0015%
sulfate (SO42-): ≤0.01%

Cationi in tracce

Ba: ≤0.005%
Fe: ≤0.003%
K: ≤0.01%
Mg: ≤0.02%
NH4+: ≤0.003%
Na: ≤0.1%
Sr: ≤0.1%
heavy metals: ≤0.001% (by ICP-OES)

Stringa SMILE

[Ca++].[O-]C([O-])=O

InChI

1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
VTYYLEPIZMXCLO-UHFFFAOYSA-L

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Categorie correlate

Descrizione generale

CaCO3 occurs naturally as the principal constituent of limestone, marble, and chalk, which can be prepared by the precipitation from dissolved calcium hydroxide and carbon dioxide.

Applicazioni

Calcium carbonate can be used as a precursor to prepare Pd/CaCO3, which can be used as a catalyst:
  • In Miyaura-Suzuki cross-coupling reactions.
  • In the ligand-free Stille cross-coupling reaction between aryl halides and tributylphenyltin to synthesize biphenyls.
It can also be used as a base in the Pd-catalyzed regioselective Heck reaction of fluorinated haloaryls with olefins to synthesize substituted olefins.

Altre note

Go to Redi-Dri™ Product Listing 795445

Note legali

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

nwg

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

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Certificati d'analisi (COA)

Lot/Batch Number
0000427328
0000427327
0000427327
0000427328
0000401180

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SAFC

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Carbonato di calcio

Michał M Kłosowski et al.
Acta biomaterialia, 20, 129-139 (2015-04-08)
To devise new strategies to treat bone disease in an ageing society, a more detailed characterisation of the process by which bone mineralises is needed. In vitro studies have suggested that carbonated mineral might be a precursor for deposition of
Robert J Friederichs et al.
Journal of the Royal Society, Interface, 12(108), 20150190-20150190 (2015-06-05)
Experimental chemistry and atomic modelling studies were performed here to investigate a novel ionic co-substitution in hydroxyapatite (HA). Zinc, silicate co-substituted HA (ZnSiHA) remained phase pure after heating to 1100 °C with Zn and Si amounts of 0.6 wt% and
Denis Gebauer et al.
Nanoscale, 3(9), 3563-3566 (2011-08-19)
Nanocellulose hybrids are promising candidates for biodegradable multifunctional materials. Hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles were obtained through a facile chemical approach over a wide range of compositions. Controlling the interactions between NCC and ACC
Eagleson M.
Concise Encyclopedia Chemistry, 162-162 (1994)
Sophie A Jamal et al.
Lancet (London, England), 382(9900), 1268-1277 (2013-07-23)
Phosphate binders (calcium-based and calcium-free) are recommended to lower serum phosphate and prevent hyperphosphataemia in patients with chronic kidney disease, but their effects on mortality and cardiovascular outcomes are unknown. We aimed to update our meta-analysis on the effect of
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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