Mercury dibromide

360.4

359.80700

232-169-3

1634

DTXSID2064864

White crystals or crystalline powder|Colorless rhombic crystals|White, rhombic crystals

28521000

0

-5.99450

White beads

6.05 g/cm³

237 °C

322 °C

322-325°C subl.

soluble in hot alcohol, methanol, HCl, HBr

Poison room

1 mm Hg ( 136.5 °C)

Oral-Rat  LD50: 40  mg/kg; Oral-Mouse LD50: 35 mg/kg

Non-combustible; the fire produces toxic mercury-containing, bromide fumes;

Sublimes at temp higher than 237 °C|Light sensitive

Slightly soluble in water.

Metals, Less Reactive

Reacts with sodium azide to give mercury(II) azide, which is sensitive to shock, friction, and heat. Mixing with hydrazine salts in basic solution produced a heat or shock sensitive yellow precipitate [Annalen, 1899, 305, 191]. Reacts violently with chlorine trifluoride *with ignition often occurring.

II

6.1

UN 1634 6.1/PG 2

3

26/27/28-33-50/53

13-28-45-60-61

OV7415000

T+,N

Treasury is low temperature, ventilated, dry; stored separately from food raw materials

Stable, but may be light sensitive. Incompatible with potassium and sodium.

Missing Phrase - N15.00950417-P260-P262-P280-P302 + P352 + P310-P304 + P340 + P310

H300 + H310 + H330-H373-H410

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

A MIXTURE OF SODIUM & /MERCURIC BROMIDE/ PRODUCES STRONG EXPLOSION ON IMPACT.|A mixture of potassium & /mercuric bromide/ produces a strong exposion on impact.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)

|Danger|H300 (100%): Fatal if swallowed [Danger Acute toxicity, oral]|P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 51 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H300: Fatal if swallowed [Danger Acute toxicity, oral]|P261, P262, P264, P270, P272, P280, P301+P310, P302+P350, P302+P352, P305+P351+P338, P310, P321, P322, P330, P332+P313, P333+P313, P361, P362, P363, P405, and P501

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). 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. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. (ERG, 2016)|Personnel protection: ... Wear appropriate chemical protective gloves, boots and goggles. ... Wear self-contained breathing apparatus when fighting fires involving this material.

If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quanities as fog. Use foam, dry chemical, or carbon dioxide.

1) Ventilate area of spill. 2) Collect spilled material for reclamation using commercially available mercury vapor depressants or specialized vacuum cleaners.|Mercury spills should be cleaned up immediately by use of a special vacuum cleaner. Then the area should be washed with a dilute calcium sulfide solution. Small quantities of mercury can be picked up by mixing with copper metal granules. ... /Mercury/|Mercury removal from waste water can be accomplished by these processes: BMS process; Chlorine is added to the waste water, oxidizing any mercury present to the ionic state. The BMS adsorbent (an activated carbon concentrate of sulfur cmpd on its surface) is used to collect ionic mercury. The spent adsorbent is then distilled to recover the mercury, leaving a carbon residue for reuse or disposal. TMR IMAC Process; Waste water is fed into a reactor, whereby a slight excess of chlorine is maintained, oxidizing any mercury present to ionic mercury. The liquid is then passed through the TMR IMAC ion-exchange resin where mercury ions are adsorbed. The mercury is then stripped from the spent resin with hydrochloric acid solution. /Mercury cmpds/|SPILLED MERCURY CMPD OR SOLN CAN BE CLEANED UP BY ANY METHOD THAT DOES NOT CAUSE EXCESSIVE AIRBORNE CONTAMINATION OR SKIN CONTACT. /MERCURY COMPOUNDS/|1) Ventilate area of spill. 2) Collect spilled material for reclamation using commercially available mercury vapor depressants or specialized vacuum cleaners. /Inorganic mercury/

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.|If material not involved in fire: Keep material out of water sources and sewers.|Personnel protection: Avoid breathing dusts, and fumes from burning material. Keep upwind. Avoid bodily contact with the material. ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water. ... If contact with the material anticipated, wear appropriate chemical protective clothing.|Preventative measure: adequate ventilation; careful attention to good housekeeping, e.g., avoidance of spills, and prompt and proper cleaning if a spill occurs; all containers of mercury and its compounds should be kept tightly closed; should be washed on a regular basis with dilute calcium sulfide solution or other suitable reactant; floors should be nonporous; all workers directly involved in the plant operation should shower thoroughly each day before leaving. /Mercury compounds/

/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Health: TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.|/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Fire or Explosion: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.|/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate enclosed areas.|/GUIDE 154: SUBSTANCES - TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.|For more DOT Emergency Guidelines (Complete) data for MERCURIC BROMIDE (8 total), please visit the HSDB record page.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

Strong irritant

Vacated 1989 OSHA PEL still enforced in some states: Hg vapor, TWA 0.05 mg/cu m, skin; Non-alkyl cmpds, Ceiling 0.1 mg/cu m, skin. /Mercury cmpd, as Hg, (except (organo) alkyls)/

Recommended Exposure Limit: 10 Hr Time-Weighted Avg: 0.05 mg/cu m, skin (Hg vapor). /Mercury [except (organo) alkyls] (as Hg)/|Recommended Exposure Limit: Ceiling Value: 0.1 mg/cu m, skin. /Mercury compounds [except (organo) alkyls] (as Hg)/

Listed as a hazardous air pollutant (HAP) generally known or suspected to cause serious health problems. The Clean Air Act, as amended in 1990, directs EPA to set standards requiring major sources to sharply reduce routine emissions of toxic pollutants. EPA is required to establish and phase in specific performance based standards for all air emission sources that emit one or more of the listed pollutants. Mercuric bromide is included on this list.

D009; Mercury. A waste containing mercury may or may not be characterized as a hazardous waste following testing by the Toxicity Characteristic Leaching Procedure as prescribed by the Resource Conservation and Recovery Act (RCRA) regulations. /Mercury/

D009; A solid waste containing mercury may or may not become characterized as a hazardous waste when subjected to the Toxicity Characteristic Leaching Procedure listed in 40 CFR 261.24, and if so characterized, must be managed as a hazardous waste. /Mercury/

In the atmosphere, particulate bound mercury constitutes only approximately 2% of total mercury in the air and has normally been found to be less than 0.1 ng/cu m in regions unaffected by local sources(1). Some other mercury compounds which may exist in the atmosphere are mercuric chloride, mercuric bromide, mercuric hydroxide, mercuric sulfide, and mercuric cyanide(1). The rest is elemental mercury in the gaseous phase. In remote areas over the Atlantic and Pacific oceans, mercury bound to particulate matter concns are generally at or below the picogram per cubic meter level(1).

most toxic

The transport and binding of inorganic mercury compounds in rat intestinal tissues were studied in vitro. Everted intestinal sacs and intestinal brush border membrane vesicles from male Wistar rats were incubated for 30 and 10 minutes, respectively, with 1X 10(-4) molar mercuric acetate, mercuric chloride, mercuric thiocyanate, mercuric bromide, or mercuric cyanide at pHs of 5.5, 6.4, or 7.4. The tissues were analyzed for mercury. The amount of each compound transported through the sac and brush border membrane vesicle walls and the amount bound to the tissues were calculated. The data were compared with the stability constants of the compounds. In the intestinal sacs increases in pH tended to increase the transport of each compound through the wall and tended to decrease the amount bound. Mercuric acetate was transported through the intestinal wall to the greatest extent, followed by mercuric chloride, mercuric thiocyanate, mercuric bromide, and mercuric cyanide, in that order. The degree of transport of the compounds correlated inversely with the logarithm of their stability constants. In brush border membrane vesicles, uptake of the compounds also correlated inversely with the logarithm of their stability constants. Increases in pH significantly increased uptake of all compounds except mercuric cyanide. Mercuric acetate, mercuric chloride, mercuric thiocyanate, mercuric bromide, and mercuric-cyanide were incubated with rat brush border membrane vesicles at pH 5.5, 6.4, or 7.4 in hypertonic medium to assess the effects of osmolarity on uptake. Uptake of mercuric acetate and mercuric chloride at each pH decreased linearly with increasing osmolarity. Uptake of mercuric thiocyanate and mercuric bromide at each pH tended to decrease with increasing osmolarity. Uptake of mercuric cyanide was not affected by changes in osmolarity.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. 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. For minor skin contact, avoid spreading material on unaffected skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)

Toxic by ingestion, inhalation, and skin absorption.|Contact with eyes causes ulceration of conjunctiva & cornea.

mercuric bromide

98.0% min assay /available/

Mercury bromide (HgBr2): ACTIVE