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 products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
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.pdf
237108
Barium carbonate
ACS reagent, ≥99%
Synonym(s):
Witherite
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About This Item
99.0-101.0% (ACS specification)
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Product Name
Barium carbonate, ACS reagent, ≥99%
InChI key
AYJRCSIUFZENHW-UHFFFAOYSA-L
InChI
1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
SMILES string
[Ba++].[O-]C([O-])=O
grade
ACS reagent
assay
≥99%
99.0-101.0% (ACS specification)
form
powder or chunks
impurities
≤0.002 meq/g water-soluble titr. base
≤0.005% oxidizers
≤0.015% insol. dil. HCl
pH
6.8 (37 °C, 3.67 g/L)
anion traces
S2-: ≤0.001%
chloride (Cl-): ≤0.002%
cation traces
Ca: ≤0.05%
Fe: ≤0.002%
K: ≤0.005%
Na: ≤0.02%
Sr: ≤0.7%
heavy metals (as Pb): ≤0.001%
Quality Level
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This Item | 1.01714 | 202711 | 329436 |
|---|---|---|---|
| form powder or chunks | form solid | form powder and chunks | form powder |
| assay ≥99%, 99.0-101.0% (ACS specification) | assay 99.0-101.0% (BaCO3 basis, complexometric) | assay 99.999% trace metals basis | assay 99.98% trace metals basis |
| Quality Level 200 | Quality Level 300 | Quality Level 100 | Quality Level 100 |
| grade ACS reagent | grade ACS reagent | grade - | grade - |
| pH 6.8 (37 °C, 3.67 g/L) | pH 7-8 (16 °C, 0.016 g/L in H2O) | pH - | pH - |
| anion traces S2-: ≤0.001%, chloride (Cl-): ≤0.002% | anion traces chloride (Cl-): ≤0.002%, sulfide (S2-): ≤0.001% | anion traces - | anion traces - |
Application
- In the preparation of barium titanate using a mixture of BaCO3 and titania (TiO2) by solid-state reaction.
- As an additive in the preparation of NBC (neodymium – barium –copper) ceramics.
General description
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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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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What is the particle size of BaCO3
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The particle size of this product is not determined.
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