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Merck

21067

Calcium carbonate

reference material for titrimetry, certified by BAM, ≥99.5%

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About This Item

Linear Formula:
CaCO3
CAS Number:
471-34-1
Molecular Weight:
100.09
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329751907
EC Number:
207-439-9
Beilstein/REAXYS Number:
8008338
MDL number:
MFCD00010906

Key Documents

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InChI key

VTYYLEPIZMXCLO-UHFFFAOYSA-L

InChI

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

SMILES string

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

grade

reference material

assay

≥99.5%

quality

certified by BAM

technique(s)

titration: suitable

solubility

H2O: insoluble

density

2.93 g/mL at 25 °C (lit.)

format

neat

Quality Level

100

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General description

Search & download your certificate here.
Calcium carbonate volumetric standard is manufactured under stringent conditions and measured with the highest possible precision. The standard is qualified by volumetric complexometric titration with photometric endpoint detection. Its certified value and uncertainty measurement are in accordance with ISO Guide 35.

Application

It finds its use as a reference material for the standardization of volumetric solutions in complexometric titrations.

Features and Benefits

  • Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
  • High-quality offering accurate titer determinations
  • Accompanied by a certificate of analysis (CoA)

Analysis Note

Exact concentration, expiry date, traceability and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label.

Storage Class

13 - Non Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

21067-BULK: + 21067-25G: + 21067-VAR:

jan

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL3383
BCCD2874
BCBW6166

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M Azizur Rahman et al.
PloS one, 8(3), e58781-e58781 (2013-03-26)
An organic matrix consisting of a protein-polysaccharide complex is generally accepted as an important medium for the calcification process. While the role this "calcified organic matrix" plays in the calcification process has long been appreciated, the complex mixture of proteins
Filipe Natalio et al.
Science (New York, N.Y.), 339(6125), 1298-1302 (2013-03-16)
Silicatein-α is responsible for the biomineralization of silicates in sponges. We used silicatein-α to guide the self-assembly of calcite "spicules" similar to the spicules of the calcareous sponge Sycon sp. The self-assembled spicules, 10 to 300 micrometers (μm) in length
Jane A Cauley et al.
Journal of women's health (2002), 22(11), 915-929 (2013-10-18)
Clinical outcomes of the Women's Health Initiative (WHI) calcium plus vitamin D supplementation trial have been reported during 7.0 years of active intervention. We now report outcomes 4.9 years after the intervention stopped and cumulative findings. Postmenopausal women (N=36,282) were
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
Julyan H E Cartwright et al.
Angewandte Chemie (International ed. in English), 51(48), 11960-11970 (2012-11-06)
Although the polymorphism of calcium carbonate is well known, and its polymorphs--calcite, aragonite, and vaterite--have been highly studied in the context of biomineralization, polyamorphism is a much more recently discovered phenomenon, and the existence of more than one amorphous phase
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