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Merck

239216

Sigma-Aldrich

碳酸钙

Calcium carbonate

ACS reagent, ≥99.0%, powder

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100 G
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500 G
$291.00
1 KG
$542.00
2.5 KG
$651.00
12 KG
$1,260.00

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国内现货,预计发货时间2025年4月14日详情


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100 G
$128.00
500 G
$291.00
1 KG
$542.00
2.5 KG
$651.00
12 KG
$1,260.00

About This Item

线性分子式:
CaCO3
CAS号:
分子量:
100.09
Beilstein:
8008338
EC 号:
MDL编号:
UNSPSC代码:
12352300
PubChem化学物质编号:
NACRES:
NA.21

$128.00


国内现货,预计发货时间2025年4月14日详情


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等级

ACS reagent

方案

≥99.0%

表单

powder

杂质

≤0.002 meq/g water-soluble titr. base
≤0.005% oxidizers
≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl

pH值(酸碱度)

8

密度

2.93 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.001%
fluoride (F-): ≤0.0015%
sulfate (SO42-): ≤0.01%

痕量阳离子

Ba: ≤0.005%
Fe: ≤0.003%
K: ≤0.01%
Mg: ≤0.02%
NH4+: ≤0.003%
Na: ≤0.1%
Sr: ≤0.1%
heavy metals: ≤0.001% (by ICP-OES)

SMILES字符串

[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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一般描述

CaCO3 天然存在,是石灰石、大理石和白垩的主要成分,可通过氢氧化钙溶液和二氧化碳沉淀制备。

应用

碳酸钙可作为前体制备Pd/CaCO3,它可以作为催化剂用于:
  • Miyaura-Suzuki交叉偶联反应。
  • 通过芳基卤化物和三丁基苯基锡的无配体Stille交叉偶联反应合成联苯。
它还可以作为碱用于Pd催化氟化卤代芳基与烯烃的区域选择性Heck反应合成被取代的烯烃。

法律信息

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

储存分类代码

11 - Combustible Solids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Michał M Kłosowski et al.
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Robert J Friederichs et al.
Journal of the Royal Society, Interface, 12(108), 20150190-20150190 (2015-06-05)
Experimental chemistry and atomic modelling studies were performed here to investigate a novel ionic co-substitution in hydroxyapatite (HA). Zinc, silicate co-substituted HA (ZnSiHA) remained phase pure after heating to 1100 °C with Zn and Si amounts of 0.6 wt% and
Eagleson M.
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Nanoscale, 3(9), 3563-3566 (2011-08-19)
Nanocellulose hybrids are promising candidates for biodegradable multifunctional materials. Hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles were obtained through a facile chemical approach over a wide range of compositions. Controlling the interactions between NCC and ACC
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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

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    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

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    1. 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.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      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/449/386/product-dating-information-mk.pdf

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