1.04466

Mercury(II) oxide

red, for analysis EMSURE^®

• Synonym(s): Mercury(II) oxide
• Empirical Formula (Hill Notation): HgO
• CAS Number: 21908-53-2
• Molecular Weight: 216.59
• MDL number: MFCD00011045
• UNSPSC Code: 12352303
• EC Index Number: 244-654-7
• NACRES: NA.21

Properties

• vapor pressure: 0.12 Pa ( 20 °C)
• Quality Level: 300
• product line: EMSURE^®
• Assay: ≥99.0% (complexometric)
• form: solid
• potency: 18 mg/kg LD₅₀, oral (Rat)
• impurities: ≤0.03% Substances insoluble in dilute hydrochloric acid
• ign. residue: ≤0.025% (substances not reducing by formic acid, as sulfate)
• pH: 6-7 (20 °C, 50 g/L in H₂O, slurry)
• mp: >400 °C (decomposition)
• solubility: 0.052 g/L
• density: 11.1 g/cm³ at 20 °C
• bulk density: 3000 kg/m³
• anion traces: chloride (Cl^-): ≤0.025%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Cd: ≤0.0001%; Cu: ≤0.0005%; Fe: ≤0.01%; N: ≤0.005%; Pb: ≤0.0005%; Zn: ≤0.0005%
• storage temp.: 2-30°C
• InChI: 1S/Hg.O
• InChI key: UKWHYYKOEPRTIC-UHFFFAOYSA-N

Description

Analysis Note

Assay (complexometric): ≥ 99.0 %
Substances insoluble in dilute hydrochloric acid: ≤ 0.03 %
Chloride (Cl): ≤ 0.025 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.005 %
Cd (Cadmium): ≤ 0.0001 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.01 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0005 %
Substances not reducing by formic acid (Residue on ignition, as sulfate): ≤ 0.025 %

Legal Information

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

Safety Information

• Pictograms: GHS06,GHS08,GHS09
• Signal Word: Danger
• Hazard Statements: H300 + H310 + H330 - H373 - H410
• Precautionary Statements: P262 - P264 - P273 - P280 - P302 + P352 + P310 - P304 + P340 + P310
• Hazard Classifications: Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2
• Target Organs: Kidney
• Storage Class Code: 6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable