21067
碳酸钙
reference material for titrimetry, certified by BAM, ≥99.5%
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线性分子式:
CaCO3
化学文摘社编号:
分子量:
100.09
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
EC Number:
207-439-9
Beilstein/REAXYS Number:
8008338
MDL number:
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
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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
精确浓度、有效期、可追踪性以及认证的详细信息请见每个包装内的证书和认证报告。含量和有效期见标签。
存储类别
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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
Polysaccharides and proteoglycans in calcium carbonate-based biomineralization.
José L Arias et al.
Chemical reviews, 108(11), 4475-4482 (2008-07-26)
Ling Li et al.
Nature materials, 13(5), 501-507 (2014-04-01)
Hierarchical composite materials design in biological exoskeletons achieves penetration resistance through a variety of energy-dissipating mechanisms while simultaneously balancing the need for damage localization to avoid compromising the mechanical integrity of the entire structure and to maintain multi-hit capability. Here
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
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