795445
Calcium carbonate
anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99%
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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:
12352300
PubChem Substance ID:
NACRES:
NA.21
Assay:
≥99%
Grade:
ACS reagent
anhydrous
anhydrous
Form:
powder
Solubility:
H2O: insoluble
grade
ACS reagent
anhydrous
Quality Level
product line
Redi-Dri™
assay
≥99%
form
powder
quality
free-flowing
impurities
≤0.002 meq/g water-soluble titr. base
≤0.005% oxidizers
≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl
pH
8
solubility
H2O: insoluble
density
2.93 g/mL at 25 °C (lit.)
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General description
Calcium carbonate is an inorganic compound that is commonly used as a solid base catalyst in some organic transformations. It is also used as an acid scavenger and stabilizing agent for acid-sensitive compounds. Additionally, CaCO3 is the most widely used additive in plastic and elastomeric applications due to its wide availability.
Application
- Spectrophotometric Analysis: Chromotropic acid disodium salt dihydrate is used in spectrophotometric methods for detecting and quantifying metal ions. Studies have shown its effectiveness in forming stable complexes with metal ions such as thorium, which can then be analyzed spectrophotometrically. This application is essential for environmental and industrial monitoring of metal contaminants (Issa et al., International Journal of Pharmaceutical Sciences Review and Research, 2022).
Features and Benefits
- Increased efficiency – Eliminates time and effort of loosening hardened powders
- Safety – Eliminates tools of force used to break up clumps
- Ecology – Reduces waste as it does not stick to the packaging
- Economy – Faster preparation and solvation increase productivity and reduce costs
- Assured Quality – Excellent, expert-tested quality with no anti-caking agents
- Flexible volumes – Available from research amounts to scale-up quantities
Legal Information
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
Storage Class
13 - Non Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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