MSDS Name:   Ethylmercurithiosalicylic acid, sodium salt, 97.0-101.0%
Synonym:   Thimerosal, Merthiolate sodium
Company:   AboutChem.com

**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 54-64-8 |Ethylmercurithiosalicylic acid, sodium| 97.0-101 | 200-210-4 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T+ N
Risk Phrases: 26/27/28 33 50/53

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Very toxic by inhalation, in contact with skin and if swallowed.
Danger of cumulative effects. Very toxic to aquatic organisms, may
cause long-term adverse effects in the aquatic environment.Light
sensitive.

Potential Health Effects
Eye:
Causes mild eye irritation. May cause conjunctivitis.
Skin:
May be fatal if absorbed through the skin.
Ingestion:
May be fatal if swallowed.
Inhalation:
May be fatal if inhaled. The toxicological properties of this
substance have not been fully investigated.
Chronic:
Not available.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes.
Ingestion:
POISON material. If swallowed, get medical aid immediately. Only
induce vomiting if directed to do so by medical personnel. Never give
anything by mouth to an unconscious person.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Avoid generating dusty conditions.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on
skin, or on clothing. Use only in a chemical fume hood.
Storage:
Store in a cool, dry place. Do not store in direct sunlight. Store
in a tightly closed container. Hormones and antibiotics room.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 54-64-8:
United States OSHA: 0.1 mg/m3 Ceiling (listed under Mercury, ary
and inorganic compounds).
Belgium - TWA: (listed as mercury, aryl and inorganic compounds):
mg/m3 VLE (as Hg)
France - VME: (listed as mercury, aryl and inorganic compounds):
mg/m3 VME (as Hg)
Germany: (listed as mercury, aryl and inorganic compounds): 0.1 m
VME (as Hg)
Malaysia: (listed as mercury, aryl and inorganic compounds): 0.1
mg/m3 TWA (as Hg)
Spain: (listed as mercury, aryl and inorganic compounds): 0.1 mg/
VLA-ED (as Hg)

Personal Protective Equipment

Eyes:
Not available.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Powder
Color: white - light cream
Odor: Not available.
pH: 6-8 @ 1% aq.sol.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 232 - 233 deg C (dec.)
Autoignition Temperature: Not available.
Flash Point: > 250 deg C (> 482.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Not available.
Specific Gravity/Density:
Molecular Formula: C9H9HgNaO2S
Molecular Weight: 404.80

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, light, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases, aluminum.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide, mercury/mercury
oxides.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 54-64-8: OV8400000
LD50/LC50:
CAS# 54-64-8: Draize test, rabbit, eye: 8 ug Mild; Oral, mouse: LD50
= 91 mg/kg; Oral, rat: LD50 = 75 mg/kg.
Carcinogenicity:
Ethylmercurithiosalicylic acid, sodium salt -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing Group: III
IMO
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing Group: III
RID/ADR
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing group: III

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ N
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 33 Danger of cumulative effects.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 13 Keep away from food, drink and animal feeding
stuffs.
S 28A After contact with skin, wash immediately with
plenty of water.
S 36 Wear suitable protective clothing.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 54-64-8: 3
Canada
CAS# 54-64-8 is listed on Canada's DSL List.
CAS# 54-64-8 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 54-64-8 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 3/12/1998 Revision #4 Date: 6/10/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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