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450782

Sigma-Aldrich

Chromium(II) chloride

anhydrous, powder, 99.99% trace metals basis

Synonym(s):

Chromium dichloride, Chromous chloride

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About This Item

Linear Formula:
CrCl2
CAS Number:
Molecular Weight:
122.90
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
grade:
anhydrous
form:
powder
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grade

anhydrous

Assay

99.99% trace metals basis

form

powder

impurities

≤150.0 ppm Trace Metal Analysis

mp

824 °C (lit.)

density

2.9 g/mL at 25 °C (lit.)

SMILES string

Cl[Cr]Cl

InChI

1S/2ClH.Cr/h2*1H;/q;;+2/p-2

InChI key

XBWRJSSJWDOUSJ-UHFFFAOYSA-L

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Application

Mediates the condensation of the aldehydes with trisubstituted chloroalkenes.[1] Used in the synthesis of a highly active precatalyst for ethylene oligimerization.[2]
The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties.
Used to make bis(indenyl)chromium dimer and related products.[3]
Used with iodoform and tetraethyl ethylenediamine to convert terminal olefins into trans-iodocyclopropanes in excellent yields.[4]

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Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Small, B.L., et al.
Macromolecules, 37, 4375-4375 (2004)
Journal of Organometallic Chemistry, 692, 520-520 (2007)
Heinemann, O. et al.
Organometallics, 15, 5462-5462 (1996)
Falck, J.R., et al.
Tetrahedron Letters, 45, 3039-3039 (2004)
Min J Kwon et al.
Life sciences, 87(13-14), 401-404 (2010-08-21)
it has been suggested that Chromium (Cr), one of the essential minerals, can be beneficial to type 2 diabetic patients because it lowers blood glucose levels by improving various steps in insulin action. A few studies reported that Cr might

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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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    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.
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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/449/386/product-dating-information-mk.pdf

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