ICSC 0984 - MERCUROUS CHLORIDE

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MERCUROUS CHLORIDE	ICSC: 0984 (November 2019)
Dimercury dichloride Calomel Chloromercury Mercury(I) chloride

CAS #: 10112-91-1

UN #: 2025

EC Number: 233-307-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
Eyes	Redness.	Wear safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Abdominal pain. Diarrhoea. Vomiting. Metallic taste.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Toxic if swallowed Harmful in contact with skin Causes skin and eye irritation May cause respiratory irritation Causes damage to the kidneys and the nervous system through prolonged or repeated exposure Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Separated from food and feedstuffs. Keep in the dark. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
PACKAGING
Unbreakable packaging. Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Severe marine pollutant.

MERCUROUS CHLORIDE

ICSC: 0984

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALLINE POWDER. Physical dangers No data. Chemical dangers Decomposes slowly under the influence of light. This produces mercuric chloride and mercury. See ICSC 0979, 0056.	Formula: Cl₂Hg₂ Molecular mass: 472.09 Sublimation point: 383°C Density: 7.15 g/cm³ Solubility in water, mg/l at 25°C: 4 (practically insoluble)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER.

Physical dangers
No data.

Chemical dangers
Decomposes slowly under the influence of light. This produces mercuric chloride and mercury. See ICSC 0979, 0056.

Formula: Cl₂Hg₂
Molecular mass: 472.09
Sublimation point: 383°C
Density: 7.15 g/cm³
Solubility in water, mg/l at 25°C: 4 (practically insoluble)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, through the skin and by ingestion. Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure The substance may have effects on the central nervous system, peripheral nervous system and kidneys. This may result in ataxia, sensory and memory disturbances, fatigue, muscle weakness and kidney impairment.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

Effects of long-term or repeated exposure
The substance may have effects on the central nervous system, peripheral nervous system and kidneys. This may result in ataxia, sensory and memory disturbances, fatigue, muscle weakness and kidney impairment.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (as Hg): 0.025 mg/m³, as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued. MAK: (as Hg, inhalable fraction): 0.02 mg/m³; peak limitation category: II(8); skin absorption (H); sensitization of skin (SH); carcinogen category: 3; pregnancy risk group: D

ENVIRONMENT
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. It is strongly advised not to let the chemical enter into the environment because it is persistent. Avoid release to the environment in circumstances different to normal use.

NOTES
Do NOT take working clothes home. Depending on the degree of exposure, periodic medical examination is suggested. Other CAS number: 7546-30-7 .

ADDITIONAL INFORMATION

EC Classification
H302; H315; H319; H335; H400; H410

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