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Chromium(VI) oxide CAS#1333-82-0

  • Chromium(VI) oxide CAS#1333-82-0
  • Chromium(VI) oxide CAS#1333-82-0
  • Chromium(VI) oxide CAS#1333-82-0
  • Chromium(VI) oxide CAS#1333-82-0
  • Chromium(VI) oxide CAS#1333-82-0

Chromium(VI) oxide CAS#1333-82-0

Exceptional Oxidizing Power：Chromium trioxide is an extremely strong oxidizing agent, highly effective in oxidizing organic and inorganic substances.


High Solubility and Versatile Compatibility：It dissolves readily in water, alcohol, sulfuric acid, and ether, enabling flexible use in various chemical processes and formulations.


Efficient Formation of Chromic Acid：When dissolved in water, it forms chromic acid, a powerful oxidizing and glass-cleaning agent widely used in laboratory and industrial applications.


Thermal Reactivity and Stability：Exhibits defined thermal behavior, decomposing at elevated temperatures (around 400°C) to form chromium(III) oxide, making it suitable for controlled high-temperature applications.

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product description

Product Description of Chromium(VI) oxide CAS#1333-82-0

Chromium(VI) oxide, also chromium trioxide (CrO₃), is dark red rhombic crystal or purplish-red flake. It dissolves in water, alcohol, sulfuric acid and ether, but insoluble in acetone, with relative density 2.70 and melting point 196°C.

It is prepared by adding concentrated sulfuric acid into cooled concentrated sodium dichromate solution, then filtered, rinsed with nitric acid and dried at 120°C.


Product Application of Chromium(VI) oxide CAS#1333-82-0

Chromium(VI) oxide is widely used for chromium electroplating and metal anti-corrosion coatings, and also applied in optical disc production.

It acts as a powerful oxidant in organic synthesis, especially for Jones oxidation. It oxidizes primary alcohols to carboxylic acids and secondary alcohols to ketones.
Product Information

Parameters


Melting point196 °C (dec.)(lit.)
Boiling point330 °C
bulk density900kg/m3
density2.7
vapor pressure0Pa at 25℃
Fp250°C
storage temp.Store below +30°C.
solubility1.667g/l
pka-0.61[at 20 ℃]
formmacroporous
colorReddish-violet
Specific Gravity2.7
PH<1 (100g/l, H2O, 20℃)
Water SolubilityHighly soluble
FreezingPoint170~172℃
SensitiveHygroscopic
Merck142,235
crystal systemNogata
Space groupAma2
Lattice constanta/nmb/nmc/nmα/oβ/oγ/oV/nm30.57430.85570.47899090900.2353
Exposure limitsACGIH: TWA 0.0002 mg/m3; STEL 0.0005 mg/m3 (Skin)

OSHA: Ceiling 0.1 mg/m3

NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3
Stability:Stable. Strong oxidizer. Reacts with most organic material in a violent and often explosive fashion. Moisture sensitive.
InChI1S/Cr.3O
InChIKeyWGLPBDUCMAPZCE-UHFFFAOYSA-N
SMILESO=[Cr](=O)=O
CAS DataBase Reference1333-82-0(CAS DataBase Reference)
NIST Chemistry ReferenceChromium trioxide(1333-82-0)
EPA Substance Registry SystemChromium(VI) trioxide (1333-82-0)


Safety Information


Hazard CodesO,T+,N,T
Risk Statements45-46-9-24/25-26-35-42/43-48/23-50/53-62-8
Safety Statements53-45-60-61-36/37/39-28-26-22
OEBE
OELTWA: 0.0002 mg/m3 (8-hours)
RIDADRUN 1463 5.1/PG 2
WGK Germany3
RTECSGB6650000
TSCATSCA listed
HazardClass5.1
PackingGroupII
HS Code28191000
Storage Class5.1A - Strongly oxidizing hazardous materials
Hazard ClassificationsAcute Tox. 2 Inhalation

Acute Tox. 3 Dermal

Acute Tox. 3 Oral

Aquatic Acute 1

Aquatic Chronic 1

Carc. 1A

Eye Dam. 1

Muta. 1B

Ox. Sol. 1

Repr. 2

Resp. Sens. 1

Skin Corr. 1A

Skin Sens. 1

STOT RE 1 Inhalation

STOT SE 3
Hazardous Substances Data1333-82-0(Hazardous Substances Data)
ToxicityLD50 oral (rat) 80 mg/kg

PEL (OSHA) 0.1 mg (CrO3)/m3 (ceiling)

TLV-TWA (ACGIH) 0.05 mg (Cr)/m3
IDLA15 mg Cr(VI)/m3


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