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Material
Safety Data Sheet
CHEMICAL NAME: Cemented Carbide Product with
Cobalt Binder
PRODUCTS ADDRESSED: All ANC Cemented Carbide Grades
TRADE NAMES & SYNONYMS: Hard Metal, Cemented WC, Tungsten Carbide
CHEMICAL FAMILY: Refractory Metal Carbide
MOLECULAR WEIGHT: N/A
MOLECULAR FORMULA: Mixture; Varies by Grade
PHYSICAL
DATA
_____________________________________________
|
Appearance
and Odor:
|
Dark
Gray Metal / No Odor
|
Specific
Gravity (H2O
= 1):
|
11.0
to 15.5
|
Boiling
Point:
|
N/A
|
Percentage
Volatile by Volume:
|
0
|
Vapor
Pressure (mm Hg):
|
N/A
|
Evaporation
Rate:
|
N/A
|
Vapor
Density (Alr=1):
|
N/A
|
How
Best Monitored:
|
Air
Sample
|
Solubility
in Water:
|
Insoluble
|
|
|
|
HAZARDOUS INGREDIENTS
_____________________________________________
|
| Material |
Notes |
Percent
by Weight |
OSHA
PEL |
ACGIH
TLV |
Tungsten
Carbide
|
(limits
for Tungsten dust)
|
41.0
- 97.0% *
|
5
mg / m3
|
5
mg / m3
|
Cobalt
**
|
|
3.0
- 30.0% *
|
0.1
mg / m3
|
0.02
mg / m3
|
Tantalum
Carbide
|
(limits
for Tantalum dust)
|
0.0
- 52.0% *
|
5
mg / m3
|
5
mg / m3
|
Titanium
Carbide
|
(limits
for Titanium dust)
|
0.0
- 20.0% *
|
5
mg / m3
|
none
established
|
Niobium
Carbide
|
(limits
for Niobium dust)
|
0.0
- 20.0% *
|
5
mg / m3
|
5
mg / m3
|
Molybdenum
Carbide
|
(limits
for Molybdenum dust)
|
0.0
- 10.0% *
|
15
mg / m3
|
10
mg / m3
|
Hafnium
Carbide
|
(limits
for Hafnium dust)
|
0.0
- 10.0% *
|
0.5
mg / m3
|
0.5
mg / m3
|
Chromium
Carbide
|
(limits
for Chromium (+3) dust)
|
0.0
- 5.1% *
|
0.5
mg / m3
|
0.5
mg / m3
|
Vanadium
Carbide
|
(limits
for Vanadium dust)
|
0.0
- 2.0% *
|
none
established
|
none
established
|
|
*
Depends on grade specifications
** Identifies substances that are subject to the requirements
of section 313 of Title III of the Superfund Amendments and
Reauthorization Act of 1986 and 40 CFR Part 372.
HEALTH HAZARD
DATA
_____________________________________________
ROUTES OF EXPOSURE:
Grinding cemented carbide product or handling of grinding sludges
will produce dust of potentially hazardous ingredients that
can be inhaled, swallowed or come in contact with the skin or
eyes.
|
| Type |
Effects
of Overexposure |
Inhalation
|
Dust
from grinding can cause irritation of the nose and throat.
It also has the potential for causing transient or permanent
respiratory disease, including occupational asthma and
interstitial fibrosis in a small percentage of exposed
individuals. It is reported that cobalt dust is
the most probable cause of such respiratory diseases.
Symptoms include coughing, wheezing, shortness of breath,
chest-tightness and weight loss. Interstitial fibrosis
(lung scarring) can lead to permanent disability or death.
Certain pulmonary conditions may be aggravated by exposure.
|
Skin
Contact
|
Can
cause irritation or an allergic skin rash due to cobalt
sensitization. Certain skin conditions, such as
dry skin, may be aggravated by exposure.
|
Eye
Contact
|
Can
cause irritation.
|
Ingestion
|
Reports
outside the industry suggest that ingestion of significant
amounts of cobalt has the potential for causing blood,
heart and other organ problems.
|
|
| Type |
Emergency
and First Aid Procudures - For Dust and Mist |
Inhalation
|
If
symptoms of pulmonary involvement develop (coughing, wheezing,
shortness of breath, etc.) remove from exposure and seek
medical attention.
|
Skin
Contact
|
If
irritation or rash occurs, thoroughly wash affected area
with soap and water and isolate from exposure. If
irritation or rash persists, seek medical attention.
|
Eye
Contact
|
If
irritation occurs, flush with copious amounts of water.
If irritation persists, seek medical attention.
|
Ingestion
|
If
substantial quantities are swallowed, dilute with a large
amount of water, induce vomiting, and seek medical attention.
|
|
Carcinogenic
Assessment (NTP Annual Report, IARC Monographs, others):
The International Agency for Research on Cancer (IARC) found
there was inadequate evidence that metallic cobalt is carcinogenic
to humans but that there is sufficient evidence that it is carcinogenic
in animals. IARC concluded that metallic cobalt is possibly
carcinogenic to humans (Substance Group 2B). Cobalt has
not been classified as a known or suspected carcinogen by OSHA
or the National Toxicology Program. Chromium is listed
by IARC and NTP as a human carcinogen.
FIRE AND
EXPLOSION HAZARD DATA
_____________________________________________
FLASH POINT: N/A
EXTINGUISHING MEDIA: For powder fires, smother with dry sand,
dry dolomite, ABC type fire extinguisher, or flood with water.
SPECIFIC FIRE FIGHTING PROCEDURES: For a powder fire confined
to a small area, use a respirator approved for toxic dusts and
fumes. For a large fire, fire fighters should use self-contained
breathing apparatus.
UNUSUAL FIRE AND EXPLOSION HAZARDS: Hard cemented carbide product
is not a fire hazard. Dust generated in grinding operations
may present a fire or explosion hazard under rare favoring conditions
of particle size, dispersion and strong ignition source.
However, this is not expected to be a problem under normal handling
and use.
REACTIVITY
DATA
_____________________________________________
STABILITY: Stable
HAZARDOUS POLYMERIZATION: Will not occur
INCOMPATIBILITY: Contact of dust with strong oxidizers may cause
fire or explosions.
CONDITIONS TO AVOID: Contact with incompatible materials
HAZARDOUS DECOMPOSITION PRODUCTS: None
MATERIALS TO AVOID: Strong acids, strong oxidizers
SPILL OR
LEAK PROCEDURES
_____________________________________________
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED: Ventilate
area of spill. Clean up using methods which avoid dust
generation such as vacuum (with appropriate filter to prevent
airborne dust levels exceeding the PEL or TLV) or wet clean-up.
If airborne dust is generated, use an appropriate NIOSH approved
respirator.
WASTE DISPOSAL METHOD: Dispose of in accordance with applicable
government regulations. May be sold as scrap for reclamation.
SPECIAL
PROTECTION INFORMATION
_____________________________________________
RESPIRATORY PROTECTION: Use an appropriate NIOSH approved respirator
if airborne dust concentrations exceed the applicable PEL or
TLV. All requirements set forth in 29 CFR 1910.134 should
be met.
VENTILATION: Use adequate local exhaust ventilation to limit
personal exposure to airborne dust to levels below the PEL or
TLV. If such equipment is not available, use respirators
as specified above.
PROTECTION GLOVES: Protective gloves or barrier cream are recommended
when contact with dust or mist is likely. Prior to applying
the barrier cream or use of protective gloves, wash thoroughly.
EYE PROTECTION: Safety glasses with side shields or goggles
are recommended. Eyewash equipment should be available
and accessible at the workplace.
OTHER PROTECTIVE EQUIPMENT: N/A
SPECIAL
PRECAUTIONS
_____________________________________________
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORAGE: Maintain good
housekeeping procedures to prevent dust accumulation during
grinding. Avoid dust inhalation and direct skin contact
with dust.
OTHER PRECAUTIONS: Clean up using methods that avoid dust generation
such as vacuum (with appropriate filter to prevent airborne
dust levels exceeding the PEL and TLV) or wet clean-up.
If airborne dust is generated, use an appropriate NIOSH approved
respirator. Wash hands thoroughly after handling, before
eating or smoking. Wash exposed skin at the end of the
work shift. Do not shake clothing, rags, or other items
to remove dust. Dust should be removed by washing or vacuuming
(with appropriate filters) the clothing, rags, or other items.
Periodic medical examinations are recommended for individuals
regularly exposed to dust or mist.
_____________________________________________
FOR FURTHER INFORMATION, PLEASE CALL:
AMERICAN NATIONAL CARBIDE COMPANY
915 South Cherry Street
Tomball, Texas 77375
(281) 351-7165
REVISION: 8
ISSUE DATE: 1 June 2003
SUPERSEDES: 1 April 2001
Although ANC has attempted to provide current and accurate information
herein, ANC makes no representations regarding the accuracy
or completeness of the information and assumes no liability
for any loss, damage, or injury of any kind which may result
from or arise out of the use or reliance on the information
by any person.
N/A - Not Applicable
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