SECTION 1: PRODUCT AND COMPANY IDENTIFICATION
reactive skinProduct Names:Navajo Brand®, PFM
Synonym/s:Pumice, Volcanic Glass
Manufacturer:
CR Minerals
P.O. Box 708
Ohkay Owingeh, NM 87566
505-428-2940
Emergency Phone: Chemtrec 1-800-424-9300
Chemical Name:Pumice (Amorphous Metal silicates)
Chemical Family:
Chemical Formula:M x O y.SiO2 (M=Al, Ca, Mg + other minor metal oxides bound with SiO2) Product Use/s:Abrasive, Filter Media, Light weight aggregate, Pozzolan
Prepared By:CR Minerals
SECTION 2: COMPOSITION / INFORMATION ON INGREDIENTS
Ingredient CAS OSHA PEL,
TWA 8/40h
(mg/m3)
ACGIH TLV,
TWA 8/40h
(mg/m3)
NIOSH REL,
TWA 8/40h
(mg/m3)
NIOSH IDLH
(mg/m3)
Conc.
(%)
Pumice (Amorphous metal silicates)1332-09-8
15(total dust)
5 (respirable)
10
10(total dust)
5 (respirable)
N.A.> 90
Crystalline Silica, SiO2        (Quartz)14808-60-7
10/(SiO2% + 2)
(respirable)
0.025
(respirable)
0.05
(respirable)
50< 5%
OSHA Regulatory Status: This material is subject to 29 CFR 1910.1200 (Hazard Communication). SECTION 3: HAZARDS IDENTIFICATION
Emergency Overview:Pumice is an odorless white or grayish-white material that ranges from pebble to
a granular powder. Contact can cause irritation to eyes, skin, respiratory system, and
gastrointestinal tract.
Potential Health Effects
Eyes:  Contact can cause irritation of eyes.
Skin:  Contact can cause mild irritation of skin.
Ingestion:  This product can cause mild irritation of gastrointestinal tract if swallowed.
Inhalation:  This product can cause mild irritation of the respiratory system. Long-term exposure may cause permanent damage. Pumice is not listed by MSHA, OSHA, or IARC as a
carcinogen. However, this product may contain trace amounts of crystalline silica in the
form of quartz or crystobalite, which has been classified by IARC as a Group I carcinogen
to humans when inhaled. Inhalation of silica can also cause a chronic lung disorder,
silicosis.
Medical
Conditions Aggravated
by Exposure:Contact may aggravate disorders of the eyes, skin, gastrointestinal tract, and respiratory system.
Potential
Environmental Effects:Pumice is an inert material.
SECTION 4: FIRST AID MEASURES
Eyes:  Immediately flush eyes with generous amounts of water or eye wash solution if water is
unavailable. Pull back eyelid while flushing to ensure that all dust has been washed
out. Seek medical attention promptly if the initial flushing of the eyes does not remove the
irritant. Do not rub eyes.
Skin:  Brush off or remove as much dry dust as possible. Wash exposed area with large amounts of water. If irritation persists, seek medical attention promptly.
Inhalation:  Move victim to fresh air. Seek medical attention. If breathing has stopped, give artificial
respiration.
Ingestion:  Do not induce vomiting. Seek medical attention immediately. Never give anything by mouth unless instructed to do so by medical personnel.
SECTION 5: FIRE FIGHTING MEASURES
Fire Hazards:Pumice is not combustible or flammable. This product is not considered to be an
explosion hazard.
Hazardous
Combustion Products:None
Extinguishing Media:Use extinguishing media appropriate for surrounding fire.
Fire
Fighting Instructions:Keep personnel away from and upwind of fire. Avoid skin contact or inhalation of dust.
Wear full fire-fighting turn-out gear (full Bunker gear), and respiratory protection (SCBA).
SECTION 6: ACCIDENTAL RELEASE MEASURES
Spill / Leak Procedures:Use proper protective equipment.
Small Spills:Use dry methods to collect spilled materials. Avoid generating dust. Do not clean up with
compressed air. Store collected materials in dry, sealed plastic or non-aluminum metal
containers. Residue on surfaces may be water washed.
Large Spills:Use dry methods to collect spilled materials. Evacuate area downwind of clean-up
operations to minimize dust exposure. Store spilled materials in dry, sealed plastic or
non-aluminum metal containers.
Containment:Minimize dust generation and prevent bulk release to sewers or waterways.
Clean-up:Residual amounts of material can be flushed with large amounts of water. Equipment can
be washed with either a mild vinegar and water solution, or detergent and water.
SECTION 7: HANDLING AND STORAGE
Handling:Avoid forming dust. Keep in tightly closed plastic or metal containers.
Protect container from physical damage. Avoid direct skin contact with the material. Storage:Store in a cool, dry, and well-ventilated location.
SECTION 8: EXPOSURE CONTROLS / PERSONAL PROTECTION
Engineering Controls:Provide ventilation adequate to maintain PELs.
Respiratory Protection:Use NIOSH/MSHA approved respirators if airborne concentration exceeds PELs.
Skin Protection:Use appropriate gloves and footwear to prevent skin contact and the potential for irritat
ion.
Clothing should fully cover arms and legs.
Eye Protection: Use safety glasses with side shields or safety goggles. Contact lenses should not be worn when working in dusty environment.
Other:Eye wash fountain/stations and emergency showers should be available.
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES
Appearance:Odor:Physical State:
Odorless Solid
White or grayish-white
lumps or powder
Boiling Point (°C/°F):Melting Point (°C/°F):Specific Gravity
N.A.N.A.  2.4
Vapor Pressure (mm Hg):Vapor Density:Evaporation Rate:
N.A.N.A.N.A.
Solubility in Water pH (25°C/77°F):
Negligible solubility in water8 - 10
SECTION 10: STABILITY AND REACTIVITY
Stability:Chemically stable.
Incompatibility/
Conditions to Avoid:Pumice should not be mixed or stored with the following materials, due to the potential
for vigorous reaction and release of heat:
Hydrofluoric Acid
Hazardous
Decomposition
Products:None
Hazardous
Polymerization:None
SECTION 11: TOXICOLOGICAL INFORMATION
An LD50 of 6450mg/kg (Rat, oral) has been identified for this product. Pumice is not
listed by MSHA, OSHA, or IARC as a carcinogen, but this product may contain
crystalline silica, which has been classified by IARC as carcinogenic to
humans when inhaled in the form of quartz or crystobalite.
SECTION 12: ECOLOGICAL INFORMATION
Ecotoxicity:Because of its unreactive nature, it would not be expected to produce
ecotoxicity upon exposure to aquatic organisms and aquatic systems.
Environmental Fate:This material shows no bioaccumulation effect or food chain concentration toxicity. SECTION 13: DISPOSAL CONSIDERATIONS
Dispose of in accordance with all applicable federal, state, and local environmental
regulations. If this product as supplied, and unmixed, becomes a waste, it will not meet
the criteria of a hazardous waste as defined under the U.S. Resource Conservation and
Recovery Act (RCRA).
SECTION 14: TRANSPORTATION INFORMATION
Pumice is not classified as a hazardous material by US DOT and is not regulated by the
Transportation of Dangerous Goods (TDG) when shipped by any mode of transport.
SECTION 16: OTHER INFORMATION
Prepared By:CR Minerals:  June 2010
CR Minerals provides the information contained herein in good faith but makes no representation as to its comprehensiveness or accuracy.  This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person.  Individuals receiving this information must consult their own technical and legal advisors and/ or exercise their own judgment in determining its appropriateness for a particular purpose.
CR Minerals makes no representations or warranties, either express or implied, including without limitation
and warranties of merchantability or fitness for a particular purpose with respect to the information set forth herein
or the product(s) to which the information refers.  Accordingly, CR Minerals will not be responsible or
liable for any claims, losses or damages resulting from the use of or reliance upon or failure to use this information.

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