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398101

Sigma-Aldrich

Calciumcarbonat

ACS reagent, 99.95-100.05% dry basis

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About This Item

Lineare Formel:
CaCO3
CAS-Nummer:
471-34-1
Molekulargewicht:
100.09
Beilstein:
8008338
EG-Nummer:
207-439-9
MDL-Nummer:
MFCD00010906
UNSPSC-Code:
12352300
PubChem Substanz-ID:
24864718
NACRES:
NA.21
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

ACS reagent

Qualitätsniveau

200

Assay

99.95-100.05% dry basis

Form

powder

Verunreinigungen

≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl

pH-Wert

8

Löslichkeit

dilute HCl: 6.7%

Dichte

2.93 g/mL at 25 °C (lit.)

Anionenspuren

chloride (Cl-): ≤0.001%
fluoride (F-): ≤0.0015%
sulfate (SO42-): ≤0.005%

Kationenspuren

Ba: ≤0.01%
Fe: ≤0.002%
K: ≤0.01%
Mg: ≤0.01%
NH4+: ≤0.003%
Na: ≤0.01%
Sr: ≤0.1%
heavy metals: ≤0.001% (by ICP)

SMILES String

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

InChI

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

InChIKey

VTYYLEPIZMXCLO-UHFFFAOYSA-L

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Allgemeine Beschreibung

Calcium carbonate is a calcium salt commonly found in shells and skeleton of marine animals.[1] It is an inexpensive, non-toxic and easily available reagent with a wide range of applications.[2]

Anwendung

Calcium carbonate may be used:
  • As a pore generating agent to prepare porous ceramics.[3]
  • As chelometric standard for the standardization of EDTA solution.[4]
  • To extract aluminium by microwave induced thermal activation of coal fly ash (CFA).[5]

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

nwg

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

dust mask type N95 (US), Eyeshields, Gloves

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
0000421149
0000421149
0000421148
0000421148
0000410484

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Calciumcarbonat puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E170, precipitated, 98.5-100.5% (based on anhydrous substance)

Sigma-Aldrich

12010

Calciumcarbonat

Calciumcarbonat 99.95 Suprapur®

Supelco

1.02059

Calciumcarbonat

Calciumcarbonat powder, ≤50 μm particle size, 98%

Sigma-Aldrich

310034

Calciumcarbonat

Kanwaljit Kaur
Handbook of Water and Wastewater Analysis, 247-248 (2007)
Permeability of porous ceramic based on calcium carbonate as pore generating agent.
Sim?o L, et al.
Ceramics International, 41(3), 4782-4788 (2015)
Eagleson M.
Concise Encyclopedia Chemistry, 162-162 (1994)
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
Opposite particle size effect on amorphous calcium carbonate crystallization in water and during heating in air.
Zou Z, et al.
Chemistry of Materials, 27(12), 4237-4246 (2015)
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Questions

1–2 of 2 Questions  

  1. 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

      Helpful?

  2. 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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