Plumbago
Black lead
Mineral carbon
C
ICSC # 0893
CAS # 7782-42-5
RTECS # MD9659600
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible under specific conditions.
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NO open flames.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Finely dispersed particles form explosive mixtures in air.
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Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
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•Skin
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Roughness.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Safety spectacles,
or eye protection in combination with breathing protection if powder.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Rinse mouth.
Rest.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Then wash away with plenty of water.
Wash away remainder with plenty of water.
(Extra personal protection: P1 filter respirator for inert particles).
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Separated from
strong oxidants.
Dry.
Keep in a well-ventilated room.
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Important Data
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Physical State; Appearance:
BLACK FLAKES,
LUMPS,
POWDER
,
CHIPS.
Physical Dangers:
Dust explosion possible if in powder or granular form, mixed with air.
Chemical Dangers:
The substance is a strong reducing agent and reacts with oxidants.
Occupational Exposure Limits:
TLV: 2 mg/m3
(Respirable fraction)
as TWA (ACGIH 2008).
MAK: 4 mg/m3 (Inhalable fraction); 1.5 mg/m3 (Respirable fraction);
Pregnancy risk group: C
(DFG 2008).
OSHA PEL: TWA 15 mppcf
NIOSH REL: TWA 2.5 mg/m3 (resp)
NIOSH IDLH: 1250 mg/m3 See: 7782425
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
Lungs may be affected by repeated or prolonged exposure to dusts
, resulting in graphite pneumoconiosis.
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Physical
Properties
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Sublimation point: 3652°C
Relative density (water = 1): 2.09-2.23
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Solubility in water: insoluble
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Environmental
Data
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N O T E S
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See Synthetic graphite CAS 7440-44-0. Synthetic and natural graphite may be mixed and many graphite products contain deliberate additives such as cristobalite, clay, coal, and petroleum products.
Natural Graphite is usually found associated with impurities such as mica, iron oxide, granite and free silica. Content can range 2-25%.
Card has been partially updated in November 2008: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 0893
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GRAPHITE (NATURAL)
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(C) IPCS, CEC, 1994
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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.
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