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C3306

Sigma-Aldrich

Cloruro de calcio dihydrate

for molecular biology, ≥99.0%

Sinónimos:

CaCl2.2H2O, Calcium chloride, Calcium dichloride

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About This Item

Fórmula empírica (notación de Hill):
CaCl2 · 2H2O
Número de CAS:
10035-04-8
Peso molecular:
147.01
EC Number:
233-140-8
MDL number:
MFCD00149613
UNSPSC Code:
12352302
PubChem Substance ID:
24892603
NACRES:
NA.31
assay:
≥99.0%
grade:
for molecular biology
form:
powder
solubility:
H2O: 294 mg/mL, clear, colorless
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grade

for molecular biology

Quality Level

200

assay

≥99.0%

form

powder

mp

176 °C (dec.) (lit.)

solubility

H2O: 294 mg/mL, clear, colorless

foreign activity

DNase, RNase, protease, none detected

SMILES string

O.O.Cl[Ca]Cl

InChI

1S/Ca.2ClH.2H2O/h;2*1H;2*1H2/q+2;;;;/p-2

Inchi Key

LLSDKQJKOVVTOJ-UHFFFAOYSA-L

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Application

Calcium chloride dihydrate has been used:
to prepare competent E. coli for transformation(118)
in the preparation of calcium polyphosphate nanospheres and to induce alkaline phosphatase(119)
as a component of renaturation buffer for the zymogram of Staphylococcus aureus crude enzyme extracts(120)

Biochem/physiol Actions

Calcium chloride is used in the heat-shock transformation of microbes with the plasmid. The positive charged calcium forms a cation bridge with phosphate of DNA and negative charged phosphorylated lipid A in lipopolysaccharide (LPS) aiding the DNA transformation into the microbes.[1]

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319

Hazard Classifications

Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
0000387457
0000387003
0000384068
0000372126
0000372127

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Preparation of calcium competent Escherichia coli and heat-shock transformation
Chang AY, et al.
Journal of Experimental Microbiology and Immunology, 1, 22-25 (2017)
Hui Sun Leong et al.
Nature communications, 5, 3947-3947 (2014-05-24)
Non-coding RNAs (ncRNAs) are frequent and prevalent across the taxa. Although individual non-coding loci have been assigned a function, most are uncharacterized. Their global biological significance is unproven and remains controversial. Here we investigate the role played by ncRNAs in
Bradley T Estes et al.
Nature protocols, 5(7), 1294-1311 (2010-07-03)
The ability to isolate, expand and differentiate adult stem cells into a chondrogenic lineage is an important step in the development of tissue engineering approaches for cartilage repair or regeneration for the treatment of joint injury or osteoarthritis, as well
Zhijian Zhao et al.
Scientific reports, 10(1), 4399-4399 (2020-03-12)
The retina decomposes visual stimuli into parallel channels that encode different features of the visual environment. Central to this computation is the synaptic processing in a dense layer of neuropil, the so-called inner plexiform layer (IPL). Here, different types of
Denisa Hathazi et al.
The EMBO journal, 39(23), e105364-e105364 (2020-11-01)
Reversible infantile respiratory chain deficiency (RIRCD) is a rare mitochondrial myopathy leading to severe metabolic disturbances in infants, which recover spontaneously after 6-months of age. RIRCD is associated with the homoplasmic m.14674T>C mitochondrial DNA mutation; however, only ~ 1/100 carriers develop
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Questions

1–2 of 2 Questions  

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

    1 answer

    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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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    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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