The particle size is not a test specification for this product. Typically, materials described as "powder" may have an approximate particle size range of 10–300 µm; however, this parameter is not included in the ACS monograph and is not tested. Verification of the particle size is recommended if this information is required.
398101
Calcium Carbonate, Chelometric Standard
ACS reagent, 99.95-100.05% dry basis
Synonym(s):
Calcium carbonate
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| Size/SKU | Availability | Price |
|---|---|---|
100 g | Check Cart for Availability | $70.10 |
500 g | Check Cart for Availability | $213.00 |
1 kg | Check Cart for Availability | $393.00 |
About This Item
Linear Formula:
CaCO3
CAS Number:
Molecular Weight:
100.09
UNSPSC Code:
12352300
NACRES:
NA.21
PubChem Substance ID:
EC Number:
207-439-9
Beilstein/REAXYS Number:
8008338
MDL number:
Assay:
99.95-100.05% dry basis
Grade:
ACS reagent
Form:
powder
Solubility:
dilute HCl: 6.7%
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grade
ACS reagent
Quality Segment
assay
99.95-100.05% dry basis
form
powder
impurities
≤0.01% NH4OH pptd., ≤0.01% insol. dil. HCl
pH
8
solubility
dilute HCl: 6.7%
density
2.93 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%, fluoride (F-): ≤0.0015%, sulfate (SO42-): ≤0.005%
cation traces
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
InChI key
VTYYLEPIZMXCLO-UHFFFAOYSA-L
General description
Calcium carbonate is a calcium salt commonly found in shells and skeleton of marine animals. It is an inexpensive, non-toxic and easily available reagent with a wide range of applications.
Application
Calcium carbonate may be used:
- As a pore generating agent to prepare porous ceramics.
- As chelometric standard for the standardization of EDTA solution.
- To extract aluminium by microwave induced thermal activation of coal fly ash (CFA).
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This Item | |||
|---|---|---|---|
| description ACS reagent, 99.95-100.05% dry basis | description United States Pharmacopeia (USP) Reference Standard | description ≥99.995% trace metals basis | description ReagentPlus® |
| form powder | form - | form powder and chunks | form powder |
| solubility dilute HCl: 6.7% | solubility - | solubility H2O: insoluble | solubility - |
| assay 99.95-100.05% dry basis | assay - | assay ≥99.995% trace metals basis | assay ≥99% (EDTA titration) |
| Quality Level 200 | Quality Level - | Quality Level 100 | Quality Level 200 |
| grade ACS reagent | grade pharmaceutical primary standard | grade - | grade - |
| pH 8 | pH - | pH - | pH 8 |
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
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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.
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For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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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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