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| CAS No.: | 15829-53-5 |
|---|---|
| Name: | Mercurous oxide，black |
| Molecular Structure: | |
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| Formula: | Hg2O |
| Molecular Weight: | 417.179 |
| Synonyms: | Mercurousoxide; Mercurous oxide (Hg2O); Mercury oxide black |
| EINECS: | 239-934-0 |
| Density: | g/cm3 |
| Melting Point: | decomposes at 100℃ [HAW93] |
| Boiling Point: | 100°Cat760mmHg |
| Flash Point: | °C |
| Solubility: | insoluble H2O; soluble HNO3; reacts with HCl to form calomel, Hg2Cl2 [MER06] |
| Hazard Symbols: | Highly toxic. TLV: TWA 0.1 mg(Hg)/m3. |
| Safety: | A poison. Flammable by chemical reaction; an oxidizer. Explosive reaction with hydrogen peroxide, chlorine + ethylene. Reacts violently with molten potassium, molten sodium, S, (H2S + BaO + air). Forms explosive mixtures with nonmetals [e.g., phosphorus (impact-sensitive), sulfur (friction-sensitive)]. Incompatible with alkali metals, reducing materials. Dangerous; when heated to decomposition it emits highly toxic fumes of Hg. See also MERCURY COMPOUNDS, INORGANIC. |
| PSA: | 9.23000 |
| LogP: | -0.06930 |
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Chemistry
The IUPAC name of Mercurous oxide (CAS NO.15829-53-5): mercuriooxymercury
Synonyms: Mercurous oxide (Hg2O) , Mercury oxide , Mercury oxide (Hg2O) , Mercury oxide black , Mercury(I) oxide , Quecksilberoxid, Quecksilberoxid [German]
CAS: 15829-53-5
EINECS: 239-934-0
Molecular Formula: Hg2O
Formula Weight: 417.1794 g/mol
Molecular Structure:
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General Description: Black or brownish-black powder. Not a true compound but rather an intimate mixture of metallic mercury and mercuric oxide. Insoluble in water and denser than water (density 9.8 g / cm3). Hence sinks in water.
Air & Water: Reactions Insoluble in water.
Toxicity Data With Reference
The toxicity information of Mercurous oxide (CAS NO.15829-53-5):
ACGIH TLV-TWA 0.025 mg(Hg)/m3 (skin) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997
Consensus Reports
Mercury and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
The safety information of Mercurous oxide (CAS NO.15829-53-5):
RIDADR:1641
HazardClass: 6.1(a)
PackingGroup: II
A poison. Flammable by chemical reaction; an oxidizer. Explosive reaction with hydrogen peroxide, chlorine + ethylene. Reacts violently with molten potassium, molten sodium, S, (H2S + BaO + air). Forms explosive mixtures with nonmetals [e.g., phosphorus (impact-sensitive), sulfur (friction-sensitive)]. Incompatible with alkali metals, reducing materials. Dangerous; when heated to decomposition it emits highly toxic fumes of Hg. See also MERCURY COMPOUNDS, INORGANIC.
Standards and Recommendations
OSHA PEL: CL 0.1 mg(Hg)/m3 (skin)
ACGIH TLV: TWA 0.1 mg(Hg)/m3 (skin); BEI: 35 µg/g creatinine total inorganic mercury in urine preshift; 15 µg/g creatinine total inorganic mercury in blood at end of shift at end of workweek.
NIOSH REL: (Mercury, Aryl and Inorganic) CL 0.1 mg/m3 (skin)