수은 암모늄 염화물

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 quantites as fog. Use "alcohol" foam, dry chemical, or carbon dioxide.

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/

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/

8 hr Time Weighted Avg (TWA): 0.025 mg/cu m, skin /Mercury, elemental and inorganic forms, as Hg/

Excursion Limit Recommendation: Excursions in worker exposure levels may exceed 3 times the TLV-TWA for no more than a total of 30 minutes during a work day, and under no circumstances should they exceed 5 times the TLV-TWA, provided that the TLV-TWA is not exceeded. /Mercury, elemental and inorganic forms, as Hg/

A4: Not classifiable as a human carcinogen. /Mercury, inorganic forms, including metallic mercury, as Hg/

Biological Exposure Index (BEI): Determinant: total inorganic mercury in urine; Sampling Time: prior to shift; BEI: 35 ug/g creatine. The determinant may be present in biological specimens collected from subjects who have not been occupationally exposed, at a concentration which could affect interpretation of the result. Such background concentrations are incorporated in the BEI value. /Mercury/

Biological Exposure Index (BEI): Determinant: total inorganic mercury in blood; Sampling Time: end of shift at end of workweek; BEI: 15 ug/L. The determinant may be present in biological specimens collected from subjects who have not been occupationally exposed, at a concentration which could affect interpretation of the result. Such background concentrations are incorporated in the BEI value. /Mercury/

Gloves, goggles, respirator (USCG, 1999)

GLOVES, GOGGLES, RESPIRATOR.

Personnel protection: ... Wear appropriate chemical protective gloves, boots, and goggles. ... Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.

10 mg Hg/m3 (NIOSH, 2024)

10 mg/cu m (as Hg) /Mercury cmpd (except (organo) alkyl compounds (as Hg)/

Mercury mainly affects the nervous system. Exposure to high levels of metallic, inorganic, or organic mercury can permanently damage the brain, kidneys, and developing fetus. Effects on brain functioning may result in irritability, shyness, tremors, changes in vision or hearing, and memory problems. Acrodynia, a type of mercury poisoning in children, is characterized by pain and pink discoloration of the hands and feet. Mercury poisoning can also cause Hunter-Russell syndrome and Minamata disease. (L7)

High-affinity binding of the divalent mercuric ion to thiol or sulfhydryl groups of proteins is believed to be the major mechanism for the activity of mercury. Through alterations in intracellular thiol status, mercury can promote oxidative stress, lipid peroxidation, mitochondrial dysfunction, and changes in heme metabolism. Mercury is known to bind to microsomal and mitochondrial enzymes, resulting in cell injury and death. For example, mercury is known to inhibit aquaporins, halting water flow across the cell membrane. It also inhibits the protein LCK, which causes decreased T-cell signalling and immune system depression. Mercury is also believed to inhibit neuronal excitability by acting on the postsynaptic neuronal membrane. It also affects the nervous system by inhibiting protein kinase C and alkaline phosphatase, which impairs brain microvascular formation and function, as well as alters the blood-brain barrier. Mercury also produces an autoimmune response, likely by modification of major histocompatibility complex (MHC) class II molecules, self peptides, T-cell receptors, or cell-surface adhesion molecules. (L7, A8, A25, A26)

Mercuric ammonium chloride, 0.075 mg/kg doses calculated as mercury, increased blood acid phosphatase and decreased cerebral and gonadial lactate dehydrogenase.

Among mercuric iodide (HgI2), mercuric chloride (HgCl2) and mercuric ammonium chloride, the acute toxic concn to monolayer cell cultures (Hepl-2, Vero and amnion) was the lowest for HgI2 (cell degeneration), followed by that of HgCl2. The Hg(II) cmpds belonged to class II type materials (highly toxic). The sensitivity of the cell lines to the mercury (Hg) was practically similar; only human amnion cells were somewhat more sensitive than the remaining ones. The Hg inhibited the cell growth and multiplication and the max effect was observed by 48 hr. The investigated cmpd inhibited monoamine oxidase activity in the hepatic mitochondria at 10-2M.

A toxicological study of poorly soluble mercury compounds, including mercuric iodide, mercuric ammonium chloride and mercuric oxide indicated that mercuric iodide was the most toxic compound. Acute toxicity study following administration via stomach and single inhalation exposure to rats showed they have approx similar toxicity.

Acute toxicity studies with several mono and divalent mercury cmpd in rats and mice by different admin routes (oral, cutaneous, ip) indicated that mercuric ammonium chloride was the least toxic Hg2+ cmpd. Mercuric chloride (via stomach in mice) and mercuric nitrate (ip in mice) were most toxic among Hg+ cmpd. Hg2+ cmpd were more toxic than the Hg+ cmpd. The effect of anion on the toxicity of the cmpd was more evident in the Hg2+ subgroup.

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/

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 ammonium chloride is included on this list.