ICSC 0984 - MERCUROUS CHLORIDE

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MERCUROUS CHLORIDE

ICSC: 0984
_{April 2000}

Dimercury dichloride
Calomel

CAS No: 10112-91-1
RTECS No: OV8740000
UN No: 3077
EC No: 080-003-00-1

Cl₂Hg₂
Molecular mass: 472.09

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible.		In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION

EXPOSURE		AVOID ALL CONTACT!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Cough. Sore throat.	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.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Abdominal pain. Diarrhoea. Vomiting. Metallic taste.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: P3 filter respirator for toxic particles). Do NOT wash away into sewer.	Xn Symbol N Symbol R: 22-36/37/38-50/53 S: (2-)13-24/25-46-60-61 UN Hazard Class: 9 UN Pack Group: III	Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Severe marine pollutant.

EMERGENCY RESPONSE	STORAGE
Transport Emergency Card: TEC (R)-90G02	Separated from food and feedstuffs. Keep in the dark.

IMPORTANT DATA

Physical State; Appearance
WHITE CRYSTALLINE POWDER.

Chemical dangers
The substance decomposes slowly under influence of light producing mercuric chloride and mercury.

Occupational exposure limits
TLV (as Hg): 0.025 mg/m³ (skin) A4 (ACGIH 1999).
MAK as Hg: 0.1 mg/m³; BAT 25 µg/l in blood; 100 µg/l in urine (1999)
MAK as Hg STEL: 1 mg/m³; (1999)
MAK: class Sh (1999)

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

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

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

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

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Sublimation point: 400-500°C Density: 7.15 g/cm³ Solubility in water, g/100 ml at 25°C: none	The substance is very toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment because it persists in the environment. Avoid release to the environment in circumstances different to normal use.

NOTES

Do NOT take working clothes home.
Cyclosan, M-C Turf fungicide are trade names.
Depending on the degree of exposure, periodic medical examination is indicated.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2000

LEGAL NOTICE

Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

Updated by AS. Approved by EC. Last update: 10.10.2000