MOLYCORP INC -- PRASEODYMIUM OXIDE, 5500  -- 6850-00N034140
<pre>=====================  Product Identification  =====================

Product ID:PRASEODYMIUM OXIDE, 5500
MSDS Date:09/01/1990
FSC:6850
NIIN:00N034140
=== Responsible Party ===
Company Name:MOLYCORP INC
Address:1201 WEST 5TH STREET
City:LOS ANGELES
State:CA
ZIP:90017
Country:US
Info Phone Num:213-977-7666
Emergency Phone Num:800-356-3129;800-424-9300(CHEMTREC)
CAGE:IO376
=== Contractor Identification ===
Company Name:MOLYCORP INC
Address:1201 WEST 5TH STREET
Box:City:LOS ANGELES
State:CA
ZIP:90017
Country:US
Phone:213-977-7666
CAGE:IO376
Company Name:UNION OIL CO OF CA UNION 76 DIV- WESTERN RGION
Address:1201 W 5TH ST
Box:7600
City:LOS ANGELES
State:CA
ZIP:90017-1443
Country:US
CAGE:79003

=============  Composition/Information on Ingredients  =============

Ingred Name:VENT:ADDN VENT/EXHAUST SYS MAY BE REQ. WHERE EXPLOS
    MIXTURES MAY BE PRESENT, ELEC SYS SAFE FOR SUCH LOCATIONS (ING 9)
RTECS #:9999999ZZ

Ingred Name:ING:MUST BE USED.
RTECS #:9999999ZZ

Ingred Name:OTHER PROT EQUIP:SHOULD BE WORN AS NEEDED.
RTECS #:9999999ZZ

Ingred Name:PRASEODYMIUM OXIDE
CAS:12037-29-5
Fraction by Wt: 96%

Ingred Name:LANTHANUM OXIDE
CAS:13128-10-8
Fraction by Wt: 1%

Ingred Name:CERIUM OXIDE
CAS:1306-38-3
Fraction by Wt: 1%

Ingred Name:NEODYMIUM OXIDE
CAS:1313-97-9
Fraction by Wt: 0.5%

Ingred Name:SUPP DATA:NOTE TO MD:LANTHANIDES, BECAUSE OF THEIR DENSITY,
    CAN PRDCE STRIKING ABNORM ON CHEST X-RAY, LANTHANIDES(ING 6)
RTECS #:9999999ZZ

Ingred Name:ING 5:ARE GENERALLY NOT FELT TO BE FIBROGENIC & LESIONS
    TYPICALLY HAVE LITTLE/NO CLINICAL SIGNIFICANCE. HOWEVER, (ING 7)
RTECS #:9999999ZZ

Ingred Name:ING 6:OCCASIONAL CASES OF SUSPECTED PNEUMOCONIOSIS HAVE
    BEEN REPORTED.
RTECS #:9999999ZZ

=====================  Hazards Identification  =====================

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES  Skin:NO  Ingestion:NO
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:EYE:CNTCT W/DUST MAY BE ABRASIVE &
    IRRIT & MAY CAUSE BURNING, TEARING, & REDNESS. SKIN:THIS MATL IS
    NOT KNOWN TO BE IRRIT, HOWEVER, CNTCT W/BROKEN SKIN MAY BE SEVERELY
    IRRIT & MAY CAUSE REDNESS, BURNI NG & SEVERE SKIN DAMAGE. THERE IS
    INSUFFICIENT INFO AVAIL ON THIS MATL TO PREDICT (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ: POTENTIAL FOR HARMFUL EFTS FROM SKIN
    ABSORP, HOWEVER, SKIN ABSORPTION OF THIS MATL IS UNLIKELY.
    INHAL:PRLNGD OVEREXP TO DUSTS MAY RESULT IN CHRONIC BRONCHITIS
    (LUNG INFLAM), W/SYMP OF COUGHI NG & SHORTNESS OF BREATH.
    INGEST:WHILE THIS MATL (SUPP DATA)
Medical Cond Aggravated by Exposure:PERSONS WITH PRE-EXISTING SKIN
    DISORDERS MAY BE MORE SUSCEPTIBLE TO EFTS OF THIS MATERIAL.

=======================  First Aid Measures  =======================

First Aid:EYE CNTCT:MOVE VICTIM AWAY FROM EXPOS & INTO FRESH AIR. IF
    IRRIT/REDNESS PERSISTS, SEE MD ATTN. FOR DIRECT CNTCT, HOLD EYELIDS
    APART & FLUSH AFFECTED EYE(S) W/CLEAN WATER FOR AT LEAST 15
    MINS.SEEK MD  ATTN. SKIN CNTCT:IMMED FLUSH AFFECTED AREA(S) W/LG
    AMTS OF WATER.IF IRRIT/REDNESS DEVELOPS, SEEK MD ATTN. INHAL:MOVE
    VICTIM AWAY FROM SOURCE OF EXPOS & INTO FRESH AIR. IF SYMPTOMS
    PERSIST,(SUPP DATA)

=====================  Fire Fighting Measures  =====================

Extinguishing Media:USE EXTINGUISHING MEDIA SUITABLE FOR SURROUNDING
    FIRE .
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA AND FULL
    PROTECTIVE EQUIPMENT . THE USE OF NIOSH/MSHA APPROVED TOXIC DUST
    RESPIRATORS IS ADVISED.
Unusual Fire/Explosion Hazard:NONE.

==================  Accidental Release Measures  ==================

Spill Release Procedures:FLUSH SPILLED	MATERIAL INTO SUITABLE
    RETAINING AREAS OR CONTAINERS WITH WATER TO AVOID AIRBORNE
    PARTICULATES. MINIMIZE DUST GENERATION. REFER TO OTHER PROTECTIVE
    EQUIPMENT.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

======================	Handling and Storage  ======================

Handling and Storage Precautions:AVOID BREATHING OR SPREADING DUST.
    STORE IN CLOSED CONTAINER.
Other Precautions:NONE SPECIFIED BY MANUFACTURER.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:IF AIRBORNE CONCENTRATIONS EXCEED ESTABLISHED
    EXPOSURE LIMITS (SEE ING SECTION), A SUITABLE NIOSH/MSHA APPROVED
    FILTER TYPE RESPIRATOR SHOULD BE WORN.
Ventilation:IF CURRENT VENT PRACT ARE NOT ADEQ TO MAINTAIN AIRBORNE
    CONC BELOW ESTABLISHED EXPOS LIMITS (ING 8)
Protective Gloves:IMPERMEABLE GLOVES.
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:IT IS SUGGESTED THAT SOURCE OF CLEAN WATER
    BE AVAIL IN WORK AREA FOR FLUSHING OF EYES/SKIN. IMPERVIOUS CLTHG
    (ING 10)
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
EFTS OF OVEREXP:HAS LOW DEGREE OF TOX, INGEST OF EXCESS QTYS MAY CAUSE
    IRRITATION OF THE DIGESTIVE TRACT. FIRST AID:SEEK IMMEDIATE MD
    ATTN. IF VICTIM IS NOT BRTHG, ARTF RESP SHOULD BE ADMIN. IF BRTHG 
    DIFFICULTIES DEVELOP, OXYGEN SHOULD BE ADMIN BY QUALIFIED PERS.
    SEEK IMMED MD ATTN. INGEST:SEEK IMMED MD ATTN. (ING 5)

==================  Physical/Chemical Properties  ==================

HCC:N1
Spec Gravity:0.8-1
Solubility in Water:NIL
Appearance and Odor:BLACK POWDER.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
NONE
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:NONE

====================  Disposal Considerations  ====================

Waste Disposal Methods:DISPOSE OF IN ACCORDANCE WITH LOCAL, STATE, AND
    FEDERAL REGULATIONS.

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