Chemical Identifiers
What is this information?
UN/NA Number - The United Nations-North America number (also called UN number or DOT number). 4-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. This numbering system was developed by the U.S. Department of Transportation, and then became the UN standard system for classifying hazardous materials.
CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.
CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.
DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.
NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and reactivity hazards, along with special hazards such as water- and air-reactivity. (The NFPA 704 diamond is also shown at the top of the datasheet.) See a guide to the NFPA diamond.
General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.
List of data sources.
UN/NA Number CAS Number CHRIS Code DOT Hazard Label
* 2809
* 7439-97-6
* link to a PDF file MCR
* CORROSIVE
NFPA 704: data unavailable
General Description
An odorless, silvery metallic liquid. Insoluble in water. Toxic by ingestion, absorption and inhalation of the fumes. Corrosive to aluminum. Used as a catalyst in instruments, boilers, mirror coatings.
Hazards
What is this information?
Reactivity Alerts - Special alerts if the chemical is especially reactive (see list of reactivity alerts).
Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.
Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).
Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).
Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).
Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.
List of data sources.
Reactivity Alerts
none
Air & Water Reactions
Insoluble in water.
Fire Hazard
Behavior in Fire: Not flammable (USCG, 1999)
Health Hazard
No immediate symptoms. As poisoning becomes established, slight muscular tremor, loss of appetite, nausea, and diarrhea are observed. Psychic, kidney, and cardiovascular disturbances may occur. (USCG, 1999)
Reactivity Profile
MERCURY forms an explosive acelylide when mixed with acetylene. Can form explosive compounds with ammonia (a residue resulting from such a reaction exploded when an attempt was made to clean it off a steel rod [Chem. Eng. News 25:2138. 1947]. Chlorine dioxide (also other oxidants, such as: chlorine, bromine, nitric acid, performic acid), and mercury explode when mixed [Mellor 2, Supp. 1:381. 1956]. Methyl azide in the presence of mercury is potentially explosive [Can. J. Chem. 41:1048. 1963]. Ground mixtures of sodium carbide and mercury can react vigorously [Mellor 5:848. 1946-47]. Ammonia forms explosive compounds with gold, mercury, or silver. (Eggeman, Tim. “Ammonia” Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. 2001.).
Belongs to the Following Reactive Group(s)
* Metals, Less Reactive
Response Recommendations
What is this information?
Firefighting - Response recommendations if the chemical is on fire (or near a fire).
Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).
Protective Clothing - Recommendations for protective gear and, in some cases, a table of breakthrough times for protective materials.
First Aid - Recommended first aid treatment for people exposed to the chemical.
List of data sources.
Firefighting
Cool all affected containers with flooding quantities of water. Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Keep run-off water out of sewers and water sources. (AAR, 2003)
Non-Fire Response
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. (AAR, 2003)
Protective Clothing
Skin: Wear appropriate personal protective clothing to prevent skin contact.
Eyes: No recommendation is made specifying the need for eye protection.
Wash skin: The worker should immediately wash the skin when it becomes contaminated.
Remove: Work clothing that becomes wet or significantly contaminated should be removed and replaced.
Change: Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premise. (NIOSH, 2003)
_____Dupont Average Standardized Breakthrough Times_____
(for MERCURY)
Tychem® BR
greater than 480 min. (concentration: 95+%)
Tychem® CPF2
greater than 480 min. (concentration: 99%)
Tychem® CPF3
greater than 480 min. (concentration: 100%%)
Tychem® CPF4
greater than 480 min. (concentration: 95+%)
Tychem® F
greater than 480 min. (concentration: 95+%)
Tychem® LV
greater than 480 min. (concentration: 95+%)
Tychem® Reflector®
greater than 480 min. (concentration: 95+%)
Tychem® Responder®
greater than 480 min. (concentration: 100%)
Tychem® Responder® CSM
greater than 480 min. (concentration: 100%)
Tychem® SL
greater than 480 min. (concentration: 95+%)
Tychem® ThermoPro
greater than 480 min. (concentration: 100%)
Tychem® TK
greater than 480 min. (concentration: 95+%) (DuPont, 2008)
Copyrighted information of E.I. du Pont de Nemours and Company. Tychem® is a registered trademark of E.I. du Pont de Nemours and Company.
First Aid
Eye: If this chemical contacts the eyes, immediately wash the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical.
Skin: If this chemical contacts the skin, promptly wash the contaminated skin with soap and water. If this chemical penetrates the clothing, promptly remove the clothing and wash the skin with soap and water. Get medical attention promptly.
Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform mouth-to-mouth resuscitation. Keep the affected person warm and at rest. Get medical attention as soon as possible.
Swallow: If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2003)
Physical Properties
What is this information?
This section contains physical properties, flammability limits, and toxic thresholds for this chemical (see definitions of each property). More property data is available for common chemicals.
Guide to toxic levels of concern (AEGLs, ERPGs, TEELs, and IDLH).
List of data sources.
Molecular Formula:
* Hg
Flash Point: data unavailable
Lower Explosive Limit: data unavailable
Upper Explosive Limit: data unavailable
Autoignition Temperature: Not flammable (USCG, 1999)
Melting Point: -38.0 ° F (USCG, 1999)
Vapor Pressure: 0.0012 mm Hg (NIOSH, 2003)
Vapor Density: data unavailable
Specific Gravity: 13.55 at 68.0 ° F (USCG, 1999)
Boiling Point: 675.0 ° F at 760.0 mm Hg (USCG, 1999)
Molecular Weight: 200.59 (USCG, 1999)
Water Solubility: Insoluble (NIOSH, 2003)
AEGL: data unavailable
ERPG-1 ERPG-2 ERPG-3
not appropriate 0.25 ppm 0.5 ppm
(AIHA, 2008)
TEEL: data unavailable
IDLH: 10.0 mg/m3 (as Hg) (NIOSH, 2003)
Regulatory Information
What is this information?
Regulatory Names - Names under which this chemical is regulated under several U.S. federal laws: CAA (Clean Air Act of 1990), CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act of 1980, also known as Superfund), EPCRA (Emergency Planning and Community Right-to-Know Act, also known as SARA Title III), and RCRA (Resource Conservation and Recovery Act of 1976).
CAA RMP - Indicates whether this chemical is regulated under Section 112(r) of the Clean Air Act, which lists about 100 toxic, flammable, or explosive hazardous substances. (Section 112(r) mandates the Risk Management Plan regulations.) For listed chemicals, the Threshold Quantity (from 40 CFR 68) is also shown. Facilities that use more than the threshold quantity of a listed chemical in a process are subject to the CAA accidental release prevention provisions.
CERCLA - Indicates whether this chemical is listed as a hazardous substance under CERCLA. For listed chemicals, the Reportable Quantity (from 40 CFR 302) is also shown. Facilities that spill more than the reportable quantity of a listed chemical must report it to federal, state, and local governments.
EHS (EPCRA 302) - Indicates whether this chemical is listed as an Extremely Hazardous Substance under Section 302 of EPCRA. For listed chemicals, the Threshold Planning Quantity (from 40 CFR 355) is also shown. Facilities that store more than the threshold quantity of an EHS chemical must meet the reporting, community right-to-know, and emergency planning requirements of EPCRA.
TRI (EPCRA 313) - Indicates whether this chemical is listed as a toxic chemical under Section 313 (Toxics Release Inventory) of EPCRA. Facilities that manufacture, store, or use significant amounts of Section 313 chemicals may be required to submit annual reports about any releases into the environment (see 40 CFR 372).
RCRA Chemical Code - 4-character identification code assigned to this substance under RCRA.
Regulatory Names:
* MERCURY
CAA RMP: Not a regulated chemical.
CERCLA: Regulated chemical with a Reportable Quantity of 1 pounds.
EHS (EPCRA 302): Not a regulated chemical.
TRI (EPCRA 313): Regulated chemical.
RCRA Chemical Code: U151
Alternate Chemical Names
What is this information?
This section provides a listing of alternate names for this chemical, including trade names, synonyms, and foreign names.
* MERCURE (DOT FRENCH)
* MERCURE MÉTALLIQUE (DOT FRENCH)
* MERCURIO (DOT SPANISH)
* MERCURIO DE METAL (DOT SPANISH)
* MERCURIO, METÁLICO (DOT SPANISH)
* MERCURY COMPOUNDS [EXCEPT (ORGANO) ALKYLS] (AS HG)
* MERCURY ELEMENT
* MERCURY METAL
* MERCURY METAL: COLLOIDAL MERCURY
* MERCURY, METALLIC
* MERCURY, [METALLIC]
* METALLIC MERCURY
* QUECKSILBER
* QUICKSILVER
