MERCUROUS CHLORIDE

Odorless white solid. Sinks in water. (USCG, 1999)

none

No rapid reaction with air. No rapid reaction with water.

Special Hazards of Combustion Products: Fumes from fire may contain toxic vapors of substance.

Behavior in Fire: Vaporizes and escapes as a sublimate (USCG, 1999)

Acute poisoning can result from inhaling dust concentrations of 1.2-8.5 mg/m 3 in air; symptoms include pain and tightness in chest, coughing, and difficulty in breathing. Compound is an irritant, cathartic, or purgative; rarely, "calomel sickness", a benign reaction with fever and rash, appears after about 1 week; seldom causes systemic poisoning but may be fatal if retained to 30-40 mg/kg. Contact with eyes causes mild irritation. (USCG, 1999)

No information available.

• Metals, Less Reactive
• Non-Redox-Active Inorganic Compounds

No information available.

Excerpt from 151 [Substances - Toxic (Non-Combustible)]:

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 the immediate precautionary measure distance, in the downwind direction, as necessary.

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, 2020)

Excerpt from 151 [Substances - Toxic (Non-Combustible)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Water spray, fog or regular foam. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal. Avoid aiming straight or solid streams directly onto the product.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2020)

Excerpt from 151 [Substances - Toxic (Non-Combustible)]:

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. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2020)

Dust mask; goggles or face shield; protective gloves (USCG, 1999)

Normalized Breakthrough Times (in Minutes)

Chemical	CAS Number	State	QS	QC	SL	C3	TF	TP	RC	TK	RF
Calomel (sat)	10112-91-1	Liquid					>480	>480
Mercuric I chloride (sat)	10112-91-1	Liquid					>480	>480

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INHALATION: remove to fresh air; give artificial respiration if breathing has stopped.

INGESTION: give egg whites, milk, or activated charcoal; induce vomiting; consult physician.

EYES: flush with water.

SKIN: wash with soap and water. (USCG, 1999)

• CALOMEL
• MERCUROUS CHLORIDE
• MERCURY MONOCHLORIDE
• MERCURY PROTOCHLORIDE
• MERCURY SUBCHLORIDE
• MILD MERCURY CHLORIDE