Chromium(III) potassium sulfate dodecahydrate - purum p.a., ≥98.5%(RT) , CAS No.7788-99-0

CAS: 7788-99-0 Cat. No.: C434114 Molecular Weight: 499.4 EC Number: 616-539-5

GRADE & PURITY purum p.a.

Synonyms

MFCD00149917 | FT-0623789 | Chromium(III) potassium sulfate (1:1:2), dodecahydrate | CHROMIC POTASSIUM SULFATE DODECAHYDRATE [MI] | AKOS025243252 | Potassium chromium alum dodecahydrate | Chrome alum (dodecahydrate) | CCRIS 8929 | H54D055WX6 | Q27279646 |

Storage

Room temperature

Overview

General Description

Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.

Application

Chromium(III) potassium sulfate dodecahydrate (KCr(SO 4 ) 2 .12H 2 O) may be used for coating the slides for microscopic studies on Periplaneta americana . It may be used in the preparation of quasi-monodisperse spherical core-shell particles of Cr/α-Cr 2 O 3 .

Specifications

Synonyms

MFCD00149917 | FT-0623789 | Chromium(III) potassium sulfate (1:1:2), dodecahydrate | CHROMIC POTASSIUM SULFATE DODECAHYDRATE [MI] | AKOS025243252 | Potassium chromium alum dodecahydrate | Chrome alum (dodecahydrate) | CCRIS 8929 | H54D055WX6 | Q27279646 |

Specifications & Purity

purum p.a., ≥98.5%(RT)

Storage

Room temperature

Grade

purum p.a.

Names and Identifiers

• Canonical Smiles: O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[K+].[Cr+3]
• IUPAC Name: potassium;chromium(3+);disulfate;dodecahydrate
• InChIKey: ZFVHBEKVAITXHW-UHFFFAOYSA-J
• INCHI: 1S/Cr.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4
• Isomeric SMILES: O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[K+].[Cr+3]
• WGK Germany: 2
• Molecular Weight: 499.4
• Reaxy-Rn: 16484167
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=16484167&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Class Transition metal oxoanionic compounds
      • Subclass Transition metal sulfates

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Class: Transition metal oxoanionic compounds
• Subclass: Transition metal sulfates
• Intermediate Tree Nodes: Not available
• Direct Parent: Transition metal sulfates
• Alternative Parents: Inorganic salts Inorganic oxides
• Molecular Framework: Not available
• Substituents: Transition metal sulfate - Inorganic oxide - Inorganic salt
• Description: This compound belongs to the class of inorganic compounds known as transition metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is a transition metal.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Melt Point(°C): 89°C
• Molecular Weight: 499.400 g/mol
• Hydrogen Bond Donor Count: 12
• Hydrogen Bond Acceptor Count: 20
• Rotatable Bond Count: 0
• Exact Mass: 498.934 Da
• Monoisotopic Mass: 498.934 Da
• Topological Polar Surface Area: 189.000 Ų
• Heavy Atom Count: 24
• Formal Charge: 0
• Complexity: 62.200
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 16

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