Chromdioxid

Chromium dioxide

HCID 73415796

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Grundinformationen

CAS: 12018-01-8
Standard-SMILES: [Cr+4].[O-2].[O-2]
InChIKey: IAQWMWUKBQPOIY-UHFFFAOYSA-N
Summenformel: CrO2
Durchschnittliche Molmasse: 83,995 g/mol

Überblick

See also: Chromium dioxide (annotation moved to).

Namen und Bezeichner

Bevorzugter Name: Chromium dioxide
IUPAC: chromium(4+);bis(oxygen(2-))
Lokaler Name: Chromdioxid
Englischer Name: chromium dioxide
Summenformel: CrO2
Molmasse: 83.99

Namen und Synonyme

CHROMIUM DIOXIDEChromium(IV) oxideMagtrievechromium (IV) oxideChromium oxide (CrO2)CHROMIUM DIOXIDE [MI]SCHEMBL1196147BHJ7466GLAMDRY 6415CHROMIUM DIOXIDE [HSDB]IAQWMWUKBQPOIY-UHFFFAOYSA-NQ2366389

Weitere Namen anzeigen

CrO2accroxraccroxcMAGTRIEVE(TM)chromiumdioxidechromiumoxide(cro2)chromium(iv)dioxidechromiumdioxide(cro2)

Datenbank-Bezeichner

CAS: 12018-01-8
PubChem CID: 73415796
UNII: 7BHJ7466GL

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA): 2 Å²
H-Brücken-Donoren: 0
H-Brücken-Akzeptoren: 2
Frei drehbare Bindungen: 0
Schwere Atome: 3
Formalladung: 0
Komplexität: 0

Physikochemische Eigenschaften

Schmelzpunkt: 375 °C · >375 °C (dec.)(lit.)
Siedepunkt: 2 O3℃ · decomposes to Cr2O3℃ [KIR78]
Dichte: 4.85 g/mL · 4.85 g/mL at 25 °C(lit.)
Löslichkeit: 2 O; · insoluble in H2O; soluble in acid solutions
Aggregatzustand: brown-black tetragonal powder
Farbe: brown-black tetragonal powder
Wasserlöslichkeit: 2 O, · insoluble H2O, soluble acids giving Cr+++and dichromate [KIR78]
Merck: 13 · 13,2254
Major Application: battery manufacturing
InChI: InChI=1S/Cr.2O
InChIKey: AYTAKQFHWFYBMA-UHFFFAOYSA-N
SMILES: [Cr](=O)=O
CAS Datenbank: 12018 · 12018-01-8
EPA chemische Informationen: Chromium oxide (CrO2) (12018-01-8)

Sicherheit und Regulatorisches

Sicherheitsdaten

wgk: 3
tsca: TSCA listed
RTECS-Nr.: GB6400000
risk_code: 36
hazard_code: Xi
safety_code: 26-36
Speicherklasse: 11 - Combustible Solids
Giftige Stoffe Daten: 12018-01-8(Hazardous Substances Data)
Hazard Classifications: Eye Irrit. 2

Chemie und Industrie

Anwendungen · 1 Eintrag

VerwendenChromium dioxide is used exclusively for magnetic recording media. It may also be used in combination with cobalt-modified iron oxides in the production of magnetic recording media. The world consumption of CrO2 is decreasing continuously as compact disc and digital videodisc are taking over the audio and video market. The sole producer is DuPont. In the course of the development of pigments for magnetic information storage, CrO2 was the first widely used pigment material that gave a higher recording density than ã-Fe2O3. In the field of audio recording this led to the IEC II standard or “chrome position”.