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Section 1 - Chemical Product and Company Identification |
MSDS Name: Osmic Acid Anhydride
Catalog Numbers:
A235 1, A235 12, A235 14, A235-1, A235-12, A235-14, A2351, A23512, A23514
Synonyms:
Osmic acid; Osmium tetroxide; Perosmic oxide.
Company Identification:
Fisher Scientific
1 Reagent Lane
Fair Lawn, NJ 07410
For information, call: 201-796-7100
Emergency Number: 201-796-7100
For CHEMTREC assistance, call: 800-424-9300
For International CHEMTREC assistance, call: 703-527-3887
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Section 2 - Composition, Information on Ingredients
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| CAS# |
Chemical Name |
Percent |
EINECS/ELINCS |
| 20816-12-0 |
OSMIUM TETROXIDE |
100 | 244-058-7 |
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Section 3 - Hazards Identification
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EMERGENCY OVERVIEW
Appearance: white to pale yellow solid.
Danger! Corrosive. Causes eye and skin burns.
Causes digestive and respiratory tract burns. Aspiration hazard if
swallowed. Can enter lungs and cause damage. May cause adverse
reproductive effects.
Target Organs: Kidneys.
Potential Health Effects
Eye:
Causes eye burns. May result in corneal injury. May cause
blindness.
Skin:
Causes skin burns.
Ingestion:
Aspiration hazard. Causes gastrointestinal tract burns. May cause
kidney damage. Causes cough, sore throat, chest pain, and
lightheadedness.
Inhalation:
Causes chemical burns to the respiratory tract. May cause
bronchopneumonia and possible death.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Prolonged
or repeated exposure may cause adverse reproductive effects.
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Section 4 - First Aid Measures
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Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid imme
diately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately.
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.
Notes to Physician:
Treat symptomatically and supportively.
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Section 5 - Fire Fighting Measures
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General Information:
Evacuate area and fight fire from a safe distance. As in any fire,
wear a self-contained breathing apparatus in pressure-demand,
MSHA/NIOSH (approved or equivalent), and full protective gear. Use
water spray to keep fire-exposed containers cool. Oxidizer. Greatly
increases the burning rate of combustible materials. Containers may
explode in the heat of a fire. Contact with metals may evolve
flammable hydrogen gas.
Extinguishing Media:
Do NOT get water inside containers. For large fires, use dry
chemical, carbon dioxide, alcohol-resistant foam, or water spray. For
small fires, use dry chemical, carbon dioxide, water spray or regular
foam. Cool containers with flooding quantities of water until well
after fire is out.
Flash Point: Not available.
Autoignition Temperature: Not available.
Explosion Limits, Lower:N/A
Upper: N/A
NFPA Rating:
(estimated) Health: ; Flammability: ; Instability:
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Section 6 - Accidental Release Measures
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General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Reduce airborne dust and prevent scattering by moistening with
water. Wear a self contained breathing apparatus and appropriate
personal protection. (See Exposure Controls, Personal Protection
section). Sweep up, then place into a suitable container for
disposal. Avoid generating dusty conditions. Remove all sources of
ignition. Provide ventilation. Do not get water inside containers.
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Section 7 - Handling and Storage
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Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Minimize dust
generation and accumulation. Keep container tightly closed. Do not
get on skin or in eyes. Do not ingest or inhale.
Storage:
Do not store near combustible materials. Store in a tightly closed
container. Store in a cool, dry, well-ventilated area away from
incompatible substances. Corrosives area. Do not store in metal
containers.
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Section 8 - Exposure Controls, Personal Protection
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Engineering Controls:
Use adequate general or local exhaust ventilation to keep airborne
concentrations below the permissible exposure limits.
Exposure Limits
| Chemical Name |
ACGIH |
NIOSH |
OSHA - Final PELs |
| OSMIUM TETROXIDE
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0.0002 ppm TWA; 0.0006 ppm STEL
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0.0002 ppm TWA; 0.002 mg/m3 TWA 1 mg/m3 IDLH (as Os)
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0.002 mg/m3 TWA (As Os)
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OSHA Vacated PELs:
OSMIUM TETROXIDE:
0.0002 ppm TWA (as Os); 0.002 mg/m3 TWA (as Os)
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 protective gloves to prevent skin
exposure.
Clothing:
Wear a chemical apron. 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.
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Section 9 - Physical and Chemical Properties
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Physical State: Solid
Appearance: white to pale yellow
Odor: chlorine-like
pH: Not available.
Vapor Pressure: 7 mm Hg @ 20C
Vapor Density: Not available.
Evaporation Rate:Negligible.
Viscosity: Not available.
Boiling Point: 130 deg C @ 760.00mmHg
Freezing/Melting Point:39.50 - 41.00 deg C
Decomposition Temperature:Not available.
Solubility: 7.24g/100ml (25 c)
Specific Gravity/Density:4.9
Molecular Formula:O4Os
Molecular Weight:254.20
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Section 10 - Stability and Reactivity
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Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, acids, metals, excess heat, bases.
Incompatibilities with Other Materials:
Combustible materials, Hydrogen chloride, Reducing agents, Strong
oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon
dioxide.
Hazardous Polymerization: Has not been reported.
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Section 11 - Toxicological Information
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RTECS#:
CAS# 20816-12-0:
RN1140000
LD50/LC50:
CAS# 20816-12-0:
Oral, mouse: LD50
= 162 mg/kg;
.
Carcinogenicity:
CAS# 20816-12-0:
Not listed by ACGIH, IARC, NTP, or CA Prop 65.
Epidemiology:
No information available.
Teratogenicity:
No information available.
Reproductive Effects:
Paternal Effects: Spermatogenesis and Testes/sperm
duct/epididymis, intratesticular-rat TDLo=20336ug/kg.
Mutagenicity:
Unscheduled DNA Synthesis: hamster embryo 200umol/L
Neurotoxicity:
No information available.
Other Studies:
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Section 12 - Ecological Information
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Ecotoxicity:
No data available.
No information available.
Environmental:
No information reported.
Physical:
No information available.
Other:
None.
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Section 13 - Disposal Considerations
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Chemical waste generators must determine whether a discarded chemical is classified
as a hazardous waste.
US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3.
Additionally, waste generators must consult state and local hazardous waste regulations to
ensure complete and accurate classification.
RCRA P-Series: CAS# 20816-12-0: waste
number P087.
RCRA U-Series: None listed.
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Section 14 - Transport Information
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| |
US DOT |
Canada TDG |
| Shipping Name: |
DOT regulated - small quantity provisions apply (see 49CFR173.4) |
OSMIUM TETROXIDE |
| Hazard Class: |
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6.1 |
| UN Number: |
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UN2471 |
| Packing Group: |
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I |
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Section 15 - Regulatory Information
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US FEDERAL
TSCA
CAS# 20816-12-0 is listed on the TSCA inventory.
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
CAS# 20816-12-0: 1000 lb final RQ; 454 kg final RQ
SARA Section 302 Extremely Hazardous Substances
None of the chemicals in this product have a TPQ.
SARA Codes
CAS # 20816-12-0: immediate, fire.
Section 313
This material contains OSMIUM
TETROXIDE (CAS# 20816-12-0, 100%),which is subject to the reporting
requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
This material does not contain any hazardous air pollutants.
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product
are listed as Hazardous Substances under the CWA.
None of the chemicals in this
product are listed as Priority Pollutants under the CWA.
None of the chemicals in this
product are listed as Toxic Pollutants under the CWA.
OSHA:
CAS# 20816-12-0 is considered highly hazardous by OSHA.
STATE
CAS# 20816-12-0 can be found on the
following state right to know lists: California, New Jersey,
Pennsylvania, Minnesota, Massachusetts.
California Prop 65
California No Significant Risk Level:
None of the chemicals in this product are listed.
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
T+ C
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with skin and if
swallowed.
R 34 Causes burns.
Safety Phrases:
S 1/2 Keep locked up and out of reach of children.
S 26 In case of contact with eyes, rinse immediately with plenty of
water and seek medical advice.
S 45 In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
S 7/9 Keep container tightly closed and in a well-ventilated place.
WGK (Water Danger/Protection)
CAS# 20816-12-0: 2
Canada - DSL/NDSL
CAS# 20816-12-0 is listed on Canada's DSL List.
Canada - WHMIS
This product has a WHMIS classification of D1A, E.
This product has been classified in accordance with the hazard
criteria of the Controlled Products Regulations and the MSDS
contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
CAS# 20816-12-0 is listed on the Canadian Ingredient Disclosure List.
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Section 16 - Additional Information
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MSDS Creation Date: 3/09/1998
Revision #4 Date: 10/03/2005
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 event shall Fisher 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 Fisher has been advised of
the possibility of such damages.
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