International Chemical Safety Cards

MERCUROUS CHLORIDE

ICSC: 0984

Dimercury dichloride
Calomel
Cl₂Hg₂
Molecular mass: 472.09

ICSC #    0984
CAS #     10112-91-1
RTECS # OV8740000
UN #        3077
EC #         080-003-00-1
April 13, 2000 Peer reviewed

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

STORAGE

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.

Separated from food and feedstuffs . Keep in the dark.

Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
Severe
marine pollutant.
Xn symbol
N symbol
R: 22-36/37/38-50/53
S: 2-13-24/25-46-60-61
UN Hazard Class: 9
UN Packing Group: III

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0984

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

MERCUROUS CHLORIDE

ICSC: 0984

I

M

P

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R

T

A

N

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D

A

T

A

PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALLINE POWDER.

PHYSICAL DANGERS:

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 ug/l in blood; 100 ug/l in urine (1999) MAK as Hg STEL: 1 mg/m^3; (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

Sublimation point: 400-500°C
Density: 7.15
g/cm3

Solubility in water, g/100 ml at 25°C:
none

ENVIRONMENTAL
DATA

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.

N O T E S

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.

Transport Emergency Card: TEC (R)-90G02

ADDITIONAL INFORMATION

ICSC: 0984	MERCUROUS CHLORIDE
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.