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ChemIDplus A TOXNET DATABASE

Substance Name: Chromium
RN: 7440-47-3
InChIKey: VYZAMTAEIAYCRO-UHFFFAOYSA-N

Note

  • A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.

Molecular Formula

  • Cr

Molecular Weight

  • 51.996
 

Classification Codes

Classification Codes

  • Growth Substances
  • Micronutrients
  • Mutation data
  • Trace Elements
  • Tumor data

Superlist Classification Codes

  • 2007 CERCLA Priority List, Rank: 77
  • 2011 CERCLA Priority List, Rank: 78
  • Known to be a carcinogen
  • Overall Carcinogenic Evaluation: Group 3
  • Reportable Quantity (RQ) = 5000 lb
  • TWA 0.5 mg/m3; Not classifiable as a human carcinogen
  • TWA 1 mg/m3 as Cr for metal and insoluble; 0.5 mg/m3 for chromium (II) or (III) compounds

Names and Synonyms

Name of Substance

  • Chromium

MeSH Heading

  • Chromium

Synonyms

  • CCRIS 159
  • Chrom
  • Chrom [German]
  • Chrome
  • Chrome [French]
  • Chromium
  • Chromium metal
  • EINECS 231-157-5
  • HSDB 910
  • UNII-0R0008Q3JB

Systematic Names

  • Chromium
  • Chromium compounds

Superlist Names

  • Chromic acid and chromates
  • Chromium
  • Chromium metal [Chromium and chromium compounds]
  • Chromium(II) compounds
  • Chromium(III) compounds
  • Chromium, elemental
  • Chromium, metal
  • Chromium, metal and chromium(III) compounds
  • Chromium, metal and insol. salts

Registry Numbers

CAS Registry Number

  • 7440-47-3

Other Registry Numbers

  • 188785-87-7
  • 195161-82-1

System Generated Number

  • 0007440473

Structure Descriptors

InChI

1S/Cr

InChIKey

VYZAMTAEIAYCRO-UHFFFAOYSA-N

Smiles

[Cr]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 unreported 27500ug/kg (27.5mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 37(10), Pg. 27, 1972.