OSHA/EPA Occupational Chemical Database

Chemical Identification
Chemical Name: MERCURY (ARYL COMPOUNDS), as Hg
CAS #: 7439-97-6 UN No: 2809 Formula: Hg
Synonyms: Mercury metal: Colloidal mercury; Metallic mercury; Quicksilver Synonyms of "other" Hg compounds vary depending upon the specific compound.

Physical Properties
Physical Description: [Note: "Other" Hg compounds include all inorganic & aryl Hg compounds except
BP: 674F MW: 200.6 LEL: NA NFPA Fire Rating: NA
FRZ/MLT: FRZ: -38F VP: 0.0012 mmHg UEL: NA NFPA Health Rating: NA
FP: NA VD: NA NFPA Reactivity Rating: NA
Sp. GR: 13.6 (metal) IP: NA NFPA Sp. Inst.: NA

Exposure Limits
OSHA NIOSH Related Information
PEL-TWA ppm: NA REL-TWA ppm: NA AIHA Emergency Response Planning Guidelines - ERPG-1/ERPG-2/ERPG-3:
PEL-TWA mg/m3: NA REL-TWA mg/m3: 0.05
PEL-STEL mg/m3: NA REL-STEL mg/m3: NA
PEL-C ppm: NA REL-C ppm: NA
PEL-C mg/m3: 0.1 REL-C mg/m3: 0.1 Carcinogen Classifications: NA
Skin Notation: No Skin Notation: Yes
Notes: NA Notes: TWA IS FOR Hg VAPOR

IDLH ppm: NA

IDLH mg/m3: 10

IDLH Notes: as Hg

NIOSH Pocket Guide to Chemical Hazards (Current through June 2006)
Mercury compounds [except (organo) alkyls] (as Hg) CAS: 7439-97-6
Formula: Hg (metal) RTECS: OV4550000 (metal)
Synonyms & Trade Names: Mercury metal: Colloidal mercury, Metallic mercury, Quicksilver Synonyms of other"Hgcompoundsvarydependinguponthespecificcompound." DOT ID & Guide: 2809 172
Exposure Limits
NIOSH REL: Hg Vapor: TWA 0.05 mg/m3 [skin] Other: C 0.1 mg/m3 [skin] OSHA PEL : C 0.1 mg/m3
IDLH: 10 mg/m3 (as Hg) Conversion: NA
Physical Description
Metal: Silver-white, heavy, odorless liquid. [Note: Other"Hgcompoundsincludeallinorganic&arylHgcompoundsexcept(organo)alkyls.]"
MW: 200.6 BP: 674F FRZ: -38F Sol: Insoluble
VP: 0.0012 mmHg IP: ? RGasD: NA Sp.Gr: 13.6 (metal)
Metal: Noncombustible Liquid (See flammable and combustible liquid classes)
Incompatibilities & Reactivities
Acetylene, ammonia, chlorine dioxide, azides, calcium (amalgam formation), sodium carbide, lithium, rubidium, copper
Measurement Methods
NIOSH 6009; OSHA ID140
Personal Protection & Sanitation First Aid
Skin: Prevent skin contact
Eyes: N.R.
Wash skin: When contam
Remove: When wet or contam
Change: Daily

Eye: Irr immed
Skin: Soap wash prompt
Breath: Resp support
Swallow: Medical attention immed
(See procedures)
NIOSH Respirator Recommendations
See Appendix E for Respirator Recommendations for Mercury compounds [except (organo) alkyls]. Mercury vapor: NIOSH/OSHA 0.5 mg/m3: CCRS /SA 1.25 mg/m3: SA:CF/PAPRS (canister) 2.5 mg/m3: CCRFS /GMFS /SAT:CF/PAPRTS(canister)/SCBAF/SAF 28 mg/m3: SA:PD,PP :
(See symbols and codes)
Exposure Routes
Inh Abs Ing Con
Irrit eyes, skin; cough, chest pain, dysp, bron pneuitis; tremor, insom, irrity, indecision, head, ftg, weak; stomatitis, salv; GI dist, anor, low-wgt; prot
(See abbreviations)
Target Organs
Eyes, skin, resp sys, CNS, kidneys
(See abbreviations)

DOT Emergency Response Guidebook (ERG 2004)
Guide Number: 172
172 Gallium and Mercury
*       Inhalation of vapors or contact with substance will result in
        contamination and potential harmful effects.
*       Fire will produce irritating, corrosive and/or toxic gases.
*       Non-combustible, substance itself does not burn but may react upon
        heating to produce corrosive and/or toxic fumes.
*       Runoff may pollute waterways.
*       CALL Emergency Response Telephone Number on Shipping Paper first. If
        Shipping Paper not available or no answer, refer to appropriate
        telephone number listed on the inside back cover.
*       Isolate spill or leak area immediately for at least 10 to 25 meters
        (30 to 80 feet) in all directions.
*       Stay upwind.
*       Keep unauthorized personnel away.
*       Wear positive pressure self-contained breathing apparatus (SCBA).
*       Structural firefighters' protective clothing will only provide limited
Large Spill
*       Consider initial downwind evacuation for at least 100 meters
        (330 feet).
*       When any large container is involved in a fire, consider initial
        evacuation for 500 meters (1/3 mile) in all directions.
*       Use extinguishing agent suitable for type of surrounding fire.
*       Do not direct water at the heated metal.
*       Do not touch or walk through spilled material.
*       Do not touch damaged containers or spilled material unless wearing
        appropriate protective clothing.
*       Stop leak if you can do it without risk.
*       Prevent entry into waterways, sewers, basements or confined areas.
*       Do not use steel or aluminum tools or equipment.
*       Cover with earth, sand, or other non-combustible material followed
        with plastic sheet to minimize spreading or contact with rain.
*       For mercury, use a mercury spill kit.
*       Mercury spill areas may be subsequently treated with
        calcium sulphide/calcium sulfide or with sodium thiosulphate/sodium
        thiosulfate wash to neutralize any residual mercury.
*       Move victim to fresh air.
*       Call 911 or emergency medical service.
*       Apply artificial respiration if victim is not breathing.
*       Administer oxygen if breathing is difficult.
*       Remove and isolate contaminated clothing and shoes.
*       In case of contact with substance, immediately flush skin or eyes with
        running water for at least 20 minutes.
*       Keep victim warm and quiet.
*       Ensure that medical personnel are aware of the material(s) involved,
        and take precautions to protect themselves.

Additional Emergency Response Information (CAMEO Data)
Non-fire Spill 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, 1999)
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, 1999)
Reactivity: CHEMICAL PROFILE: Insoluble, explosive acelylide is formed by mixing acetylene and mercury. Ammonia and mercury can form explosive compounds. 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 and mercury explode when mixed (Mellor 2, Supp. 1:381. 1956). Methyl azide in the presence of mercury was shown to be potentially explosive (Can. J. Chem. 41:1048. 1963). Ground mixtures of sodium carbide and mercury, aluminum, lead, or iron can react vigorously (Mellor 5:848. 1946-47). (REACTIVITY, 1999)
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, 1997)