Chromium (III) nitrate

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Structural formula
Chromium (III) ion   3 Nitration
General
Surname Chromium (III) nitrate
Molecular formula Cr (NO 3 ) 3
Brief description

blue solid with an odor similar to nitric acid
External identifiers / databases
CAS number
  • 13548-38-4 (anhydrous)
  • 7789-02-8 (nonahydrate)
EC number 236-921-1
ECHA InfoCard 100.033.550
PubChem 24598
ChemSpider 23000
Wikidata Q421235
properties
Molar mass
  • 238.01 g · mol -1
  • 400.15 g mol −1 (nonahydrate)
Physical state

firmly

density

1.89 g cm −3

Melting point
  • 54.8 ° C (anhydrous)
  • 36–37 ° C (nonahydrate, release of crystal water)
boiling point

Decomposition:> 100 ° C

solubility

good in water (810 g l −1 at 20 ° C, nonahydrate)

safety instructions
GHS labeling of hazardous substances
03 - Oxidising 07 - Warning

Caution

H and P phrases H: 272-315-319
P: 302 + 352-305 + 351 + 338
Toxicological data

3250 mg kg −1 ( LD 50 ,  rat ,  oral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Chromium (III) nitrate is a chromium salt of nitric acid . In addition to the anhydrous form, there is also chromium (III) nitrate nonahydrate (Cr (NO 3 ) 3  · 9 H 2 O).

properties

The crystalline anhydrous chromium (III) nitrate is slightly green crystals. The salt is easily soluble in water . It decomposes at 100 ° C. Chromium (III) nitrate nonahydrate has a red-violet color; at 36–37 ° C it gives off water of crystallization.

use

For the production of alkali metal-free catalysts and as a stain in cotton printing.

Individual evidence

  1. ↑ a b c d e f g Entry on chromium (III) nitrate in the GESTIS substance database of the IFA , accessed on February 21, 2017(JavaScript required) .
  2. ↑ a b Data sheet Chromium (III) nitrate (nonahydrate) (PDF) from Merck , accessed on January 19, 2011.
  3. ↑ Entry on chromium (III) nitrate. In: Römpp Online . Georg Thieme Verlag, accessed on July 15, 2014.