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239259

Sigma-Aldrich

Chromium(III) nitrate nonahydrate

99%

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About This Item

Linear Formula:
Cr(NO3)3 · 9H2O
CAS Number:
Molecular Weight:
400.15
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.55

Quality Level

Assay

99%

form

crystals or chunks

reaction suitability

reagent type: catalyst
core: chromium

pH

2-3 (20 °C, 50 g/L)

mp

60 °C (lit.)

SMILES string

[Cr+3].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O

InChI

1S/Cr.3NO3.9H2O/c;3*2-1(3)4;;;;;;;;;/h;;;;9*1H2/q+3;3*-1;;;;;;;;;

InChI key

GVHCUJZTWMCYJM-UHFFFAOYSA-N

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General description

Chromium (III) nitrate nonahydrate is a hydrated chromium salt. It is commonly used as a chromium source in the organic synthesis.

Application

Chromium (III) nitrate nonahydrate (Cr (NO3)3.9H2O) may be used in the:
  • Synthesis of nanosized chromium (Cr2O3) oxide by thermal decomposition method.
  • Preparation of chromium (III) based Ziegler-Natta catalysts for the polymerization of ethylene.
  • Synthesis of highly porous coordination polymer MIL-101.

Pictograms

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Signal Word

Warning

Hazard Statements

Hazard Classifications

Aquatic Chronic 3 - Eye Irrit. 2 - Ox. Sol. 3 - Skin Irrit. 2 - Skin Sens. 1B

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Interconversion of CrO2 formed by decomposition of chromium (III) nitrate nonahydrate.
Maciejewski M, et al.
Journal of Solid State Chemistry, 119(1), 13-23 (1995)
Milka O Montes-Holguin et al.
Environmental toxicology and chemistry, 25(1), 220-226 (2006-02-24)
The objective of the present study was to determine the oxidative stress caused by hexavalent chromium (Cr[VI]), the chromium (Cr) uptake, and the Cr speciation in Convolvulus arvensis L. plants grown in hydroponics media containing either Cr(VI) or Cr(III). The
Metallic and bimetallic nanocatalysts incorporated into highly porous coordination polymer MIL-101.
El-Shall M, et al.
Journal of Materials Chemistry, 19(41), 7625-7631 (2009)
A Johansson et al.
Environmental research, 58(1), 80-96 (1992-06-01)
Eight rabbits were exposed to 0.7 +/- 0.4 mg/m3 Co2+ as CoCl2 and 1.2 +/- 0.7 mg/m3 Cr3+ as Cr(NO3)3 (group Co + Cr), eight to 0.6 +/- 0.5 mg/m3 Co2+ (group Co), and eight to filtered air (control group)
M R Christoffersen et al.
Calcified tissue international, 41(1), 27-30 (1987-07-01)
Aluminum ions (Al) and chromium (III) ions (Cr), as they exist in aqueous solution at neutral pH, adsorb onto calcium hydroxyapatite crystals (HAP) and severely inhibit their dissolution process, when present in concentrations less than 1 microM. Iron (III) ions

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