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21908-53-2

Name MERCURIC OXIDE, RED
CAS 21908-53-2
EINECS(EC#) 244-654-7
Molecular Formula HgO
MDL Number MFCD00011045
Molecular Weight 216.59
MOL File 21908-53-2.mol

Chemical Properties

Appearance Mercuric oxide is a red or orange-red heavy crystalline powder; yellow when finely powdered.
Melting point  500 °C (dec.)(lit.)
density  11,14 g/cm3
storage temp.  Poison room
solubility  Aqueous Acid (Slightly), Methanol (Very Slightly)
form  Powder
color  Yellow to orange
Specific Gravity 11.14
Odor Odorless
Stability: Stable. Sensitive to light. Incompatible with strong oxidizing agents, strong reducing agents, combustible materials, organic materials, phenols.
Water Solubility  Partially soluble in water. insoluble in alcohol, ether, acetone and ammonia.
Merck  14,5882
CAS DataBase Reference 21908-53-2(CAS DataBase Reference)
NIST Chemistry Reference Mercury(ii) oxide(21908-53-2)
EPA Substance Registry System 21908-53-2(EPA Substance)

Safety Data

Hazard Codes  T+,N
Risk Statements 
R26/27/28:Very Toxic by inhalation, in contact with skin and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S13:Keep away from food, drink and animal feeding stuffs .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 1641 6.1/PG 2
WGK Germany  3
RTECS  OW8750000
8
TSCA  Yes
HazardClass  6.1
PackingGroup  II
Safety Profile
Poison by ingestion, skin contact, intraperitoneal, and intramuscular routes. An experimental teratogen. Experimental reproductive effects. An FDA over-the-counter drug. Used for treating fruit trees. Flammable by chemical reactions. A powerful oxidzer. Explosive reaction with acetyl nitrate, butadene + ethanol + iodine (at 35OC), chlorine + hydrocarbons (e.g., methane, ethylene), diboron tetrafluoride, hydrogen peroxide + traces of nitric acid, reducing agents (e.g., hydrazine hydrate, phosphinic acid). Forms heator impact-sensitive explosive mixtures with nonmetals (e.g., phosphorus, sulfur), metals (e.g., magnesium, potassium, sodium-potas sium alloy). Reacts violently with hydrogen trisulfide (on ignition), hydrazine hydrate, hydrogen peroxide, hypophosphorous acid, iodine + methanol or ethanol, phospham, acetyl nitrate, S2Cl2, reductants. Incandescent reaction with phospham. When heated to decomposition it emits highly toxic fumes of Hg. See also MERCURY COMPOUNDS, IN ORGAN I C .
Hazardous Substances Data 21908-53-2(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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