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| Carbon Mounts for Scanning Electron Microscopy |
Date Effective........... January 8, 2009
(most recent revision)
Chemical family.......... Graphite
CAS #.................... 7782-42-5
Emergencies
Contacting CHEMTREC:
24 Hour Emergency Use Only #'s......
Worldwide phone: 1-(703)-527-3887
Worldwide FAX: 1-(703)-741-6090
Toll-free phone: 1-(800)-424-9300 USA only
Product or Trade Name.... Graphite (commonly called "carbon") mounts
Emergency Overview:
Contains no ingredients now known to be hazardous by OSHA.
The normal sharpening of the rod, whether being done in a carbon rod
sharpener or honing with a razor blade, is suspected of generating small
amounts of possibly respirable fibers. We believe that such sharpening
should be done in a ventilated hood facility.
Name CAS # Approximate Weight %
Graphite 7782-42-5 >99.99%
No hazardous components as defined by OSHA.
313 Listed Chemicals
If none are listed here, there are no 313 chemicals present above
threshold values.
NFPA (Scale 0-4):
Not known
Potential Health Effects:
Eye: Dust may cause eye irritation
Skin Contact: Dust may cause skin irritation.
Skin Absorption: Not expected to be a major route of entry.
Ingestion: Not known
Inhalation: Small graphite fibers or dust are suspected as being possible
inhalation hazards.
Chronic effects: A review of the literature does not show obvious long
term hazard.
Carcinogenicty: No component known to be present in this product and is
at > 0.1% is presently listed as a carcinogen by IARC
or OSHA unless other wise noted.
Routes of exposure: Inhalation
Permissible exposure:
15 MCCPF OSHA TWA, 10 mg/m3 ACGIH TWA (Total Dust)
CIRCLA Hazard Ratings:
Toxicity: 1 Ingnitgability: 0 Reactivity: 0 Persistence: 3
Toxicological Information:
Graphite causes benign pneumoconiosis (graphitosis). Symptoms of
pneumoconiosis from graphite exposure are dyspnea, coughing, black sputum,
bronchitis, ventricular hypertrophy and impairment of pulmonary function.
X-rays will show progressive nodulation of the lungs. The threshold limit
value was set in conformity with the limit for free crystalline silica,
which may be present in graphite.
Incompatibilies:
Strong oxidizers,fluorine, peroxides
Route of entry: Inhalation, Skin or eye contact.
Target organs: Lungs, Cardiovascular system.
Symptoms:
Coughing, forceful expiration. Dyspnea, difficulty in breathing.
Black sputum, black colored expectorate. Bronchitis, inflamed bronchial
mucous membranes, pulmonary fibrosis, fibrous tissue involving lungs.
Pneumoconiosis, degenerative respiratory disease.
Note:
Sometimes during transit, the mounts in the bag can contact with each other,
generating some level of dust in the bag. It might be convenient to
carefully open the bag and empty out the dust (powder) into some waste
container (for later disposal), replacing the mounts in the now clean
polybag. This could be good practice and hygiene in terms of the SEM is
concerned since it would eliminate this as a source of particulates in the
SEM.
Eyes: In case of contact, immediately flush eyes with copious amounts of
flowing water for at least 15 minutes, retracting eye lids often.
Get medical attention immediately. Contact lenses should not be
worn when working with this product.
Skin: Wash skin thoroughly with mild soap and water. Flush with luke warm
water for 15 minutes.
Inhalation: If large amounts of the dust are inhaled, move the exposed
person to fresh air at once. If symptoms persist contact
physician.
Ingestion: Not known
Flammability classification: Not classified.
Flash Point/Method: Not known, but very high!
Auto-Ignition Temperature: Not determined
Flammable Limits: Lower: Not applicable
Upper: Not applicable
Extinguishing Media: Non-burning
Special Conditions to Avoid: None known
Hazardous products of Combustion: None known
Unusual Fire Hazards: None known
Firefighting procedures/instructions:
Treat the surrounding fire; this product is non-burning.
Properties that could increase fire or explosion hazard:
None known.
This product is not subject to "accidental release" in normal use as an SEM mount. However, if the powder or fine dust should be released, wear protective clothing, and wet the released powder with any oil based material (e.g. vegetable oil) to keep them from becoming airborne, and then collect and store and then dispose of properly.
Storage and handling: Store in the plastic bags in which the product is shipped, tightly sealed.
Personal Protective Equipment (PPE): Eye/Face Protection: ANSI 87.1 approved safety glasses with side shield when cutting the fibers, either with razor blade or scissors. Skin Protection: No particular protection needed when handling this material on an occasional basis. For converting bulk rolls of the fiber into smaller packs, we recommend the wearing of some kind of gloves, for example, latex gloves. Respiratory Protection: For the occasional cutting or grinding of a carbon mount, we would recommend appropriate protection. Other: Sometimes it is necessary to "polish" the mount on a metallographic polishing table. There is no dust hazard so long as the polishing media is kept wet. However, if the polishing media is allowed to try out, and then disturbed, a dust hazard can result.
Appearance: Black solid pieces of high purity graphite Color: Black pH: Not applicable Odor: None Vapor Pressure: Not applicable Vapor Density (Air=1): Not available Boiling Point/Range: >3000° C Melting Point/Range: Not available Specific Gravity: 2 to 2.5 g/cc Solubility in water: None Softening Point: Not determined Molecular Formula: Not known Molecular Weight: 12.01 %Volatile by Volume: Not determined Evaporation Rate (n-butyl acetate = 1): Not available Viscosity: Not available Bulk Density: Not determined
Chemical Stability: The product is stable under normal use conditions. Reactivity: This material is not reactive. Conditions to Avoid: Heat, sparks, flames, and other ignition sources; avoid heating above 290° C (554° F) Incompatibility (materials to avoid): Strong oxidizers, fluorine, peroxides Hazardous Products of Decomposition: None known Reactions with Air and Water: None known
Eye Effects: Powder or dust from this material may cause eye irritation. Skin Effects, Contact: Powder or dust from this material may cause skin irritation Skin Effects, Absorption: No absorption or acute effects expected. However the dust might cause some mild irritation of the skin. Acute Oral Effects (Ingestion): None known Acute Inhalation Effects: None known. Chronic Effects: A review of the literature does not show obvious long term hazard. Carcinogenicity: No component known to be present in this product at > 0.1% is presently listed as a carcinogen by IARC, NTP, or OSHA unless otherwise noted in Section 16.
Exotoxicity: No ecological information is available for this product.
US EPA Hazardous Waste Numbers:
This product as purchased does not fall under current US EPA
(Environmental Protection Agency) RCRA definitions of hazardous
waste. Under RCRA it is the generator's responsibility to determine
the status of the waste at the time of its disposal.
General Disposal Considerations:
All recovered material should be packaged, transported and disposed of
(or reclaimed) using good engineering practices. Disposal method must
be in compliance with local, state, and federal regulations regarding
health, air and water pollution.
CERCLA Reportable Quantity: This product does not contain any CERCLA
regulated materials.
Proper Shipping Name: Not Regulated DOT Hazard Class: Non-Regulated UN/NA ID: Not Regulated Packing Group: Not Applicable Labels: Not Regulated Marine Pollutant: No information DOT Status: Not Regulated
All components of this product are listed on the Toxic Substance Control Act (TSCA) Section 8(b) Chemical Inventory and the Canadian Environmental Protection Act (CEPA) provisional domestic substances list (DSL). This product is not a HAZMAT as defined by the OSHA Hazard Communications Standard (29 CFR 1910.1200). This product is not a "controlled product" as defined by the Canadian Workplace Hazardous Materials Information System (WHMIS). SARA Section 302 Extremely Hazardous Substances: Not listed anywhere. SARA 311/312 Acute: No Chronic: No Fire: No Reactivity: No Sudden release of pressure: No SARA Section 313 Toxic Chemicals: No "313 chemicals" contained in this product. California Prop. 65: Proposition 65 requires manufacturers or distributors of consumer products into the State of California to provide a warning statement if the product contains ingredients for which the State has found to cause cancer, birth defects or other reproductive harm. If this product contains an ingredient listed by the State of California to cause cancer or reproductive toxicity, it will be listed below: No ingredients, present at concentrations > 0.1%, have been found that are presently listed as a carcinogen by IARC, NTP, or OSHA.
Disclaimer of Liability: Caution! Do not use SPI Supplies products or materials in applications involving implantation within the body; direct or indirect contact with the blood pathway; contact with bone, tissue, tissue fluid, or blood; or prolonged contact with mucous membranes. Products offered by SPI Supplies are not designed or manufactured for use in implantation in the human body or in contact with internal body fluids or tissues. SPI Supplies will not provide to customers making devices for such applications any notice, certification, or information necessary for such medical device use required by US FDA (Food and Drug Administration) regulation or any other statute. SPI Supplies and Structure Probe, Inc. make no representation, promise, express warranty or implied warranty concerning the suitability of these materials for use in implantation in the human body or in contact with internal body tissues of fluids.
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