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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


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

EU REACH Annex XIV (Authorisation List)

CAS No.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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