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Safety Information

266264

Sigma-Aldrich

Chromium

powder, 99.5%, −100 mesh

Synonym(s):

Cd

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About This Item

Empirical Formula (Hill Notation):
Cr
CAS Number:
7440-47-3
Molecular Weight:
52.00
EC Number:
231-157-5
MDL number:
MFCD00010944
UNSPSC Code:
12161600
PubChem Substance ID:
57648182
NACRES:
NA.22

Quality Level

100

Assay

99.5%

form

powder

reaction suitability

core: chromium
reagent type: catalyst

resistivity

12.7 μΩ-cm, 20°C

particle size

−100 mesh

bp

2672 °C (lit.)

mp

1857 °C (lit.)

density

7.14 g/mL at 25 °C (lit.)

SMILES string

[Cr]

InChI

1S/Cr

InChI key

VYZAMTAEIAYCRO-UHFFFAOYSA-N

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Application

Chromium powder can be used in the microwave assisted synthesis of a bis(toluene)chromium boron complex, [Cr(η-C6H5CH3)2]+ (BPh4)-. It can also be used in the solid-state synthesis of chromium sulfide.

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

266264-BULK:
266264-250G:4548173957265
266264-VAR:
266264-50G:4548173957272

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT8401
MKCT1626
MKCT3849
MKCR8842
MKCS1604

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Synthetic reactions using metal powders under microwave irradiation.
Whittaker A G and Mingos D M P
J. Chem. Soc., Dalton Trans., 21, 3967-3970 (2002)
Microwave-assisted solid-state reactions involving metal powders.
GavinaWhittaker A and Michael P aMingos D
J. Chem. Soc., Dalton Trans., 12, 2073-2079 (1995)
J A J Vanoirbeek et al.
Journal of toxicology and environmental health. Part A, 66(4), 393-409 (2003-01-30)
Chromium-based catalysts are used for the synthesis of polyethylene, but little is known about the hazard and biomonitoring possibilities of this type of chromium for workers who may be occupationally exposed to such compounds. Therefore, the bioavailability and toxicokinetics of
B Seifert et al.
Journal of exposure analysis and environmental epidemiology, 10(2), 103-114 (2000-05-03)
The German Environmental Survey (GerES) is a large-scale population study which has repeatedly been carried out in Germany. GerES I was conducted in 1985/1986 followed by GerES IIa in 1990/1991 (West Germany) and GerES IIb in 1991/1992 (East Germany). GerES
Carola Lidén et al.
Contact dermatitis, 54(5), 233-238 (2006-05-13)
There is a great need to accurately assess skin exposure to contact allergens. We have developed a technique for assessment of skin exposure to nickel, chromium and cobalt using acid wipe sampling by cellulose wipes with 1% nitric acid. Chemical
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