1.00229

Chromium(VI) oxide

for analysis EMSURE^®

• Synonym(s): Chromium(VI) oxide, Chromic anhydride, Chromium trioxide
• Empirical Formula (Hill Notation): CrO₃
• CAS Number: 1333-82-0
• Molecular Weight: 99.99
• MDL number: MFCD00010952
• UNSPSC Code: 12352303
• EC Index Number: 215-607-8
• NACRES: NA.21

Properties

• Quality Level: 300
• 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 (SO₄^2-): ≤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

Description

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

Safety Information

• Pictograms: GHS03,GHS05,GHS06,GHS08,GHS09
• Signal Word: Danger
• Hazard Statements: H271 - H301 + H311 - H314 - H317 - H330 - H334 - H335 - H340 - H350 - H361f - H372 - H410
• Precautionary Statements: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 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