Product ID:MAGNESIUM OXIDE
MSDS Date:07/16/1992
FSC:6810
NIIN:00N047528
MSDS Number: BSTKD

SPECTRUM CHEMICAL MFG CORP

14422 S SAN PEDRO ST
GARDENA, CA 90248-9985
US

Emergency Phone: 301-516-8000;800-424-9300(CHEMTREC)

Info Phone: 301-516-8000

Cage: 63415

SPECTRUM LABORATORY PRODUCTS INC

GARDENA, CA 90248-2027 US

Telephone: 310-516-9843

Cage: 63415

ANY

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

ANY NIOSH/MSHA APPRVD POWERED, AIR-PURIFYING RESP

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

APPRVD AIR-PURIFYING, FULL-FACEPIECE RESP W/HEPA

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

NIOSH/MSHA APPRVD SUPP-AIR RESP W/FULL FACEPIECE.

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

TIGHT-FITTING FACEPIECE & HEPA FILTER. 5000 MG/M3

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

FACEPIECE & IS OPER IN PRESS-DEMAND OR OTHER

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

FULL-FACEPIECE RESP W/HEPA FILTER.ANY APPROP

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

ANY NIOSH/MSHA APPRVD SCBA THAT HAS FULL

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

MODE.ANY NIOSH/MSHA APPRVD SUPP-AIR RESP THAT HAS

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

POS-PRESS MODE IN COMBINATION WITH AN AUXILIARY

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

OCCAS LIFTING UPPER & LOWER LIDS, UNTIL NO

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

TREAT SYMP & SUPPORTIVELY. GET

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

NO SPECIFIC

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

MAGNESIUM OXIDE

CAS: 1309-48-4

RTECS: OM3850000

Fraction By Weight: 100%

OSHA PEL 15 MG/M3

ACGIH TLV: 10 MG/M3 TDUST

EMPLOYEE'S EYES MAY BE EXPOS TO SUBSTANCE,

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

WORK AREA FOR EMERGENCY USE.

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

RAPIDLY, BUT IS QUICKLY LOST. ALL SYMPS

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

MAY

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

THAT ORAL ADMIN CAUSES NOTHING MORE THAN PURGING. IF

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

MAGNESIUM MAY PRDCE CNS DEPRESS, ABOLITION OF

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

CAUSE RESP TRACT IRRIT, NASAL CATARRH & COUGHING UP

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

NO DATA

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

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:ACUTE:INHAL: DUST MAY CAUSE RESP TRACT
IRRIT. METAL FUME FEVER, AN INFLUENZA-LIKE ILLNESS, MAY OCCUR IF
FRESHLY FORMED MAGNESIUM OXIDE FUMES COMPOSED OF PARTICLES SIZED
BETWEEN 0.02-0.05 MICRONS ARE I NHALED IN SUFF AMTS. SYMPS MAY BE
DELAYED 4-12 HRS & BEGIN W/SUDDEN ONSET OF THIRST, & SWEET,
METALLIC (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ:OR FOUL TASTE IN MOUTH. OTHER SYMPS
MAY INCL UPPER RESP TRACT IRRIT ACCOMPANIED BY COUGHING & DRYNESS
OF MUC MEMB, LASSITUDE & GENERALIZED FEELING OF MALAISE. FEVER,
CHILLS, MUSCULAR PAIN, MI LD-SEV HDCH, NAUS, OCCAS VOMIT, DIARR,
PROSTRATION & LEUKOCYTOSIS MAY ALSO OCCUR. TOLERANCE TO FUMES
DEVELOPS (ING 4)
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:INHAL:REMOVE FROM EXPOS AREA TO FRESH AIR IMMED. IF BRTHG HAS
STOPPED, PERFORM ARTF RESP. KEEP PERSON WARM & AT REST. TREAT SYMP
& SUPPORTIVELY. GET MED ATTN IMMED. SKIN:REMOVE CONTAMD CLTHG &
SHOES I MMED. WASH AFFECTED AREA W/SOAP OR MILDDETERGENT & LRG AMTS
OF WATER UNTIL NO EVIDENCE OF CHEM REMAINS (APPROX 15-20 MINS). GET
MED ATTN IMMED. EYE:WASH IMMED W/LRG AMTS OF WATER/NORM SALINE,(ING
20)

Extinguishing Media:EXTINGUISH USING AGENT SUITABLE FOR TYPE OF
SURROUNDING FIRE.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT . NO ACUTE HAZARD. MOVE CNTNR FROM FIRE AREA
IF POSS. AVOID BRTHG VAPS/DUSTS; KEEP UPWIND.
Unusual Fire/Explosion Hazard:NEGLIGIBLE FIRE HAZARD WHEN EXPOSED TO
HEAT OR FLAME.

Spill Release Procedures:SOAK UP SPILL WITH VERMICULITE OR OTHER
ABSORBENT MATERIAL AND PLACE INTO SUITABLE CONTAINERS FOR LATER
DISPOSAL.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE AWAY FROM INCOMPATIBLE
SUBSTANCES.
Other Precautions:OBSERVE ALL FEDERAL, STATE AND LOCAL REGULATIONS WHEN
STORING OF SUBSTANCE. FOR ASSISTANCE, CONTACT DISTRICT DIRECTOR OF
ENVIRONMENTAL PROTECTION AGENCY.

Respiratory Protection:SPECIFIC RESP SELECTED MUST BE BASED ON CONTAM
LEVS FOUND IN WORK PLACE, MUST NOT EXCEED WORKING LIMITS OF RESP &
BE APPRVD BY NIOSH/MSHA. 100 MG/M3-ANY NIOSH/MSHA APPRVD DUST, MIST
& FUME RESP. ANY N IOSH/MSHA APPRVD SUPP-AIR RESP. (ING 10)
Ventilation:PROVIDE LOCAL EXHAUST VENTILATION SYSTEM TO MEET PUBLISHED
EXPOSURE LIMITS.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:SPLASH PROOF/DUST RESIST SAFETY GOGGS.
Other Protective Equipment:EMPLOYEE MUST WEAR APPROP PROT (IMPERVIOUS)
CLTHG & EQUIP TO PVNT RPTD/PRLNGD SKIN CONT W/SUBSTANCE. WHERE
THERE(SUPDAT)
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
MATERIALS TO AVOID: CHLORINE TRIFLUORIDE: MAY IGNITE. INTERHALOGENS:
INCOMPATIBLE. MAGNESIUM POWDER: MAY IGNITE OR EXPLO WHEN HEATED.
PHOSPHORUS PENTACHLORIDE: INCANDESCES BRILLIANTLY ON HEATING. SULF
UR (SUBLIMED): MAY IGNITE OR EXPLO WHENHEATED. OTHER PROTECTIVE
EQUIPMENT: IS ANY POSSIBILITY THAT AN (ING 2)

HCC:N1
Boiling Pt:B.P. Text:6512F,3600C
Melt/Freeze Pt:M.P/F.P Text:5160F,2849C
Spec Gravity:3.58 @ 25C
pH:10.3
Solubility in Water:SLIGHTLY SOLUBLE
Appearance and Odor:ODORLESS, FINE WHITE POWDER.

Stability Indicator/Materials to Avoid:YES
ACIDS (STRONG): VIOLENT RXN. ALUMINUM POWDER: MAY IGNITE/EXPLO WHEN
HEATED. BROMINE PENTAFLUORIDE: VIOLENT RXN. (SUPDAT)
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:THERMAL DECOMPOSITION MAY RELEASE
TOXIC AND/OR HAZARDOUS GASES.

Waste Disposal Methods:OBSERVE ALL FEDERAL, STATE AND LOCAL REGULATIONS
WHEN DISPOSING OF SUBSTANCE. FOR ASSISTANCE, CONTACT DISTRICT
DIRECTOR OF ENVIRONMENTAL PROTECTION AGENCY.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.