**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 21908-53-2 |Mercury (II) Oxide | >99% | 244-654-7 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T+
Risk Phrases: 26/27/28 33
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Very toxic by inhalation, in contact with skin and if swallowed.
Danger of cumulative effects.
Potential Health Effects
Eye:
May cause eye irritation. Contact may cause ulceration of the
conjunctiva and cornea.
Skin:
May cause mild skin irritation. Harmful if absorbed through the
skin.
Ingestion:
May be fatal if swallowed. May cause severe and permanent damage to
the digestive tract. Causes gastrointestinal irritation with nausea,
vomiting and diarrhea. May cause kidney damage. Inorganic mercury
compounds may cause central and peripheral nervous system effects.
Inhalation:
May cause respiratory tract irritation. May cause abdominal pain,
nausea, vomiting, and inflammation of the gums and mouth. Acute
exposure to high concentrations of mercury vapors may cause severe
respiratory tract irritation. May cause liver damage.
Chronic:
Overexposure may cause delayed kidney injury. Prolonged or repeated
skin contact may cause dermatitis. Prolonged or repeated exposure
can cause psychic abnormalities such as anxiety, depression and
excitability. May cause adverse nervous system effects including
muscle tremors and incoordination. May cause reproductive and fetal
effects.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid immediately. Flush skin with plenty of water for at
least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting
unless directed to do so by medical personnel. Never give anything by
mouth to an unconscious person. Get medical aid.
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. Do NOT use mouth-to-mouth
resuscitation. If breathing has ceased apply artificial respiration
using oxygen and a suitable mechanical device such as a bag and a
mask.
Notes to Physician:
Antidote:
The use of Dimercaprol or BAL (British Anti-Lewisite) as a chelating
agent should be determined by qualified medical personnel.
**** 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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Containers may explode
when heated. Non-combustible, substance itself does not burn but may
decompose upon heating to produce corrosive and/or toxic fumes.
Extinguishing Media:
Do NOT get water inside containers. Do NOT use straight streams of
water. For small fires, use dry chemical, carbon dioxide, or water
spray. For large fires, use water spray, fog or regular foam. Cool
containers with flooding quantities of water until well after fire is
out.
**** 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 runoff into storm sewers and ditches which lead to
waterways. Clean up spills immediately, observing precautions in the
Protective Equipment section. If sweeping is necessary, use a dust
suppressant agent. Avoid generating dusty conditions. Provide
ventilation.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Wash hands before eating. Remove
contaminated clothing and wash before reuse. Use only in a
well-ventilated area. Minimize dust generation and accumulation.
Wash clothing before reuse.
Storage:
Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits.
Exposure Limits
CAS# 21908-53-2:
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)
Germany: (listed as mercury inorganic compounds): Skin absorber
Malaysia: (listed as mercury, aryl and inorganic compounds): 0.1
mg/m3 TWA (as Hg)
Netherlands: (listed as mercury inorganic compounds): 0.15 mg/m3
Netherlands: (listed as mercury inorganic compounds): 0.05 mg/m3
Russia: (listed as mercury inorganic compounds): 0.2 mg/m3 TWA (a
Hg)
Russia: (listed as mercury inorganic compounds): 0.05 mg/m3 STEL
Hg)
Spain: (listed as mercury, aryl and inorganic compounds): 0.1 mg/
VLA-ED (as Hg)
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate 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: Solid
Color: red or yellow
Odor: odorless
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 932 deg F
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: 0.053 g/L at 25C.
Specific Gravity/Density: 11.1 at 20C.
Molecular Formula: HgO
Molecular Weight: 216.5894
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat.
Incompatibilities with Other Materials:
Chlorine, hydrazine hydrate, hydrogen peroxide, hypophosphorus acid,
iodine + methyl and ethyl alcohol, magnesium, phospham, phosphorus,
sodium + potassium, sulfur, reducing agents, easily oxidized
materials, phosphinic acid.
Hazardous Decomposition Products:
Mercury/mercury oxides, oxygen.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 21908-53-2: OW8750000
LD50/LC50:
CAS# 21908-53-2: Oral, mouse: LD50 = 16 mg/kg; Oral, rat: LD50 = 18
mg/kg; Skin, rat: LD50 = 315 mg/kg.
Carcinogenicity:
Mercury (II) Oxide -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Ecotoxicity:
Marine fish TLm=0.29 ppm/48H
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: MERCURY OXIDE
Hazard Class: 6.1
UN Number: 1641
Packing Group: II
IMO
Shipping Name: MERCURY OXIDE
Hazard Class: 6.1
UN Number: 1641
Packing Group: II
RID/ADR
Shipping Name: MERCURY OXIDE
Hazard Class: 6.1
UN Number: 1641
Packing group: II
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 33 Danger of cumulative effects.
Safety Phrases:
S 22 Do not breathe dust.
S 24/25 Avoid contact with skin and eyes.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28B After contact with skin, wash immediately with
plenty of water and soap.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 21908-53-2: 3
Canada
CAS# 21908-53-2 is listed on Canada's DSL List.
CAS# 21908-53-2 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 21908-53-2 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 4/29/1999 Revision #2 Date: 12/03/2002
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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