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1.00229

Supelco

Chromium(VI) oxide

for analysis EMSURE®

Synonym(s):

Chromium(VI) oxide, Chromic anhydride, Chromium trioxide

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About This Item

Empirical Formula (Hill Notation):
CrO3
CAS Number:
Molecular Weight:
99.99
MDL number:
UNSPSC Code:
12352303
EC Index Number:
215-607-8
NACRES:
NA.21

Quality Level

product line

EMSURE®

Assay

≥99.0% (iodometric)

form

solid

impurities

≤0.02% Substances precipitated by ammonia

loss

≤ 1.0% loss on drying, 105°C

pH

<1 (20 °C, 100 g/L in H2O)

mp

197 °C

density

2.7 g/cm3 at 20 °C

bulk density

900 kg/m3

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.02%

cation traces

Fe: ≤0.01%
K: ≤0.005%
N: ≤0.005%
Na: ≤0.2%

storage temp.

2-30°C

InChI

1S/Cr.3O

InChI key

WGLPBDUCMAPZCE-UHFFFAOYSA-N

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Analysis Note

Assay (iodometric): ≥ 99.0 %
Chloride (Cl): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.02 %
Total nitrogen (N): ≤ 0.005 %
Fe (Iron): ≤ 0.01 %
K (Potassium): ≤ 0.005 %
Na (Sodium): ≤ 0.2 %
Substances precipitated by ammonia: ≤ 0.02 %
Loss on Drying (105 °C): ≤ 1.0 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

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 Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 3


Certificates of Analysis (COA)

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