Before any use as a reference material it has to be dried for 4 hours at 110° C.
21067
Calcium carbonate
reference material for titrimetry, certified by BAM, ≥99.5%
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25 G
$204.00
$204.00
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About This Item
Linear Formula:
CaCO3
CAS Number:
Molecular Weight:
100.09
Beilstein/REAXYS Number:
8008338
EC Number:
MDL number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24
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grade
reference material
Quality Level
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
SMILES string
[Ca++].[O-]C([O-])=O
InChI
1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
InChI key
VTYYLEPIZMXCLO-UHFFFAOYSA-L
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This Item | PHR1326 | 398101 | 1.02410 |
|---|---|---|---|
| technique(s) titration: suitable | technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) - | technique(s) titration: suitable |
| format neat | format neat | format - | format - |
| assay ≥99.5% | assay - | assay 99.95-100.05% dry basis | assay - |
| grade reference material | grade certified reference material, pharmaceutical secondary standard | grade ACS reagent, chelometric standard | grade - |
| quality certified by BAM | quality - | quality - | quality - |
| solubility H2O: insoluble | solubility - | solubility dilute HCl: 6.7% | solubility - |
General description
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.
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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_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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
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
Munlika Bootklad et al.
Carbohydrate polymers, 97(2), 315-320 (2013-08-06)
Thermoplastic starch (TPS) was prepared using compression molding and chicken eggshell was used as a filler. The effect of the eggshell powder (EP) on the properties of TPS was compared with the effect of commercial calcium carbonate (CC). The organic
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
Christopher T Parsons et al.
Environmental pollution (Barking, Essex : 1987), 178, 254-263 (2013-04-17)
Arsenic contamination of floodplain soils is extensive and additional fresh arsenic inputs to the pedosphere from human activities are ongoing. We investigate the cumulative effects of repetitive soil redox cycles, which occur naturally during flooding and draining, on a calcareous
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¿Al secar el estandar de referencia en un horno, cual debe ser la temperatura y el rango de la temperatura en la que debe mantenerse y en tiempo de secado?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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