Skip to Content
MilliporeSigma
All Photos(3)

Key Documents

View All Documentation

236470

Sigma-Aldrich

Chromium(VI) oxide

ACS reagent, ≥98.0%

Synonym(s):

Chromic anhydride

Sign Into View Organizational & Contract Pricing

Select a Size

100 G
$143.00
500 G
$368.00

$143.00

Available to ship onApril 29, 2025Details

Request a Bulk Order
All Photos(3)

Select a Size

Change View
100 G
$143.00
500 G
$368.00

About This Item

Empirical Formula (Hill Notation):
CrO3
CAS Number:
1333-82-0
Molecular Weight:
99.99
EC Number:
215-607-8
MDL number:
MFCD00010952
UNSPSC Code:
12352303
PubChem Substance ID:
329752434
NACRES:
NB.24
assay:
≥98.0%
grade:
ACS reagent
form:
powder or crystals

$143.00

Available to ship onApril 29, 2025Details

Request a Bulk Order

grade

ACS reagent

Quality Level

200

assay

≥98.0%

form

powder or crystals

reaction suitability

reagent type: oxidant

impurities

≤0.01% insolubles

pH

<1 (20 °C, 100 g/L)

mp

196 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤0.005%
nitrate (NO3-): ≤0.05%
sulfate (SO42-): ≤0.005%

cation traces

Fe, Al, Ba: ≤0.03%
Na: ≤0.2%

SMILES string

O=[Cr](=O)=O

InChI

1S/Cr.3O

InChI key

WGLPBDUCMAPZCE-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Chromium(VI) oxide is an oxidizing reagent for the oxidation of carbon-hydrogen bonds to alcohols, alkylaromatics to ketones and carboxylic acids, alkenes to α, β-unsaturated ketones, arenes to quinones, and alcohols to aldehydes, ketones, acids, and keto acids[1].

signalword

Danger

Hazard Classifications

Acute 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

target_organs

Respiratory system

Storage Class

5.1A - Strongly oxidizing hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCX7023
MKCW6956
MKCS3178
MKCQ2053
MKCK9109

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Chromium (VI) Oxide
Freeman F, et al.
e-EROS Encyclopedia of Reagents for Organic Synthesis (2001)
Chromium (VI) Oxide.
Freeman F, et al.
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2008)
Chromium (VI) oxide-catalyzed oxidation of arenes with periodic acid.
Yamazaki S.
Tetrahedron Letters, 42(19), 3355-3357 (2001)
S Y Shiau et al.
The Journal of nutrition, 123(10), 1747-1753 (1993-10-01)
An experiment was conducted to study the influence of three different forms of chromium (CrCl3.6H2O, Na2CrO4.4H2O and Cr2O3) on the utilization of two carbohydrates (glucose and cornstarch) by juvenile hybrid tilapia (Oreochromis niloticus x O. aureus). Average initial body weight
Adam Szelag et al.
Polish journal of pharmacology, 55(6), 1097-1103 (2004-01-20)
Hexavalent chromium compounds exhibit higher toxicity than its trivalent compounds since chromium ions in the +6 oxidation state easily cross biological membranes. It has recently been proposed that substances reducing chromium ions from the +6 to the less toxic +3
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service