Product ID:M8090-3 ALPHA-METHYLSTYRENE
MSDS Date:04/01/1995
FSC:6550
NIIN:00F041334
MSDS Number: BXNNC

Emergency Phone: 314-771-5765/800-325-3010

Info Phone: 314-771-5765/800-325-3010

Cage: 21076

Telephone: 314-771-5765

Cage: 21076

ALPHA METHYLSTYRENE (MONOMER)

CAS: 98-83-9

RTECS: WL5250000

Fraction By Weight: 99%

ACGIH TLV: 242 MG/CUM

LD50 LC50 Mixture:ORAL LD50(RAT): 4900 MG/KG
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:HARMFUL IF SWALLOWED, INHALED/ABSORBED
THROUGH SKIN. VAPOR/MIST IS IRRITATING TO THE EYES, MUCOUS
MEMBRANES & UPPER RESPIRATORY TRACT. MAY CAUSE BURNING SENSATION.
SKIN: IRRITANT.
Effects of Overexposure:IRRITATION, BURNING SENSATION, COUGHING,
WHEEZING, LARYNGITIS, SHORTNESS OF BREATH, HEADACHE, NAUSEA,
VOMITING

First Aid:EYES/SKIN: IMMEDIATELY FLUSH W/COPIOUS AMOUNTS OF WATER FOR
15 MINS. SKIN: WASH W/SOAP & COPIOUS AMOUNTS OF WATER. INHALATION:
REMOVE TO FRESH AIR. GIVE CPR/OXYGEN IF NECESSARY. INGESTION: WASH
OUT MO UTH W/WATER IF CONSCIOUS. OBTAIN MEDICAL ATTENTION IN ALL
CASES.

Flash Point:114F
Lower Limits:0.9
Upper Limits:6.1
Extinguishing Media:CO2, DRY CHEMICAL POWDER/APPROPRIATE FOAM, WATER
SPRAY
Fire Fighting Procedures:WEAR SELF CONTAINED BREATHING APPARATUS &
PROTECTIVE CLOTHING TO PREVENT CONTACT W/SKIN & EYES.
Unusual Fire/Explosion Hazard:COMBUSTIBLE LIQUID. EMITS TOXIC FUMES
UNDER FIRE CONDITIONS. VAPOR MAY TRAVEL CONSIDERABLE DISTANCE TO
SOURCE OF IGNITION & FLASH BACK.AUTOIGNITION TEMP: 1065F.

Spill Release Procedures:EVACUATE AREA, WEAR SELF CONTAINED BREATHING
APPARATUS, RUBBER BOOTS & HEAVY RUBBER GLOVES. COVER W/DRY
LIME/SODA ASH, PICK UP, KEEP IN CLOSED CONTAINERS & HOLD FOR WASTE
DISPOSAL. VENTILATE AREA & WA SH SITE AFTER MATERIAL PICKUP IS
COMPLETE.

Handling and Storage Precautions:KEEP TIGHTLY CLOSED & AWAY FROM
IGNITION SOURCES. REFRIGERATE. LACHRYMATOR.
Other Precautions:DON'T BREATHE VAPOR. DON'T GET IN EYES, ON SKIN/ON
CLOTHING. AVOID PROLONGED/REPEATED EXPOSURE.

Respiratory Protection:WEAR NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED
Protective Gloves:CHEMICAL-RESISTANT
Eye Protection:CHEMICAL SAFETY GOGGLES
Other Protective Equipment:PROTECTIVE CLOTHING, SAFETY SHOWER & EYE
BATH
Work Hygienic Practices:REMOVE/LAUNDER CONTAMINATED CLOTHING & SHOES
BEFORE REUSE. WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health

Boiling Pt:B.P. Text:329-336.2F
Melt/Freeze Pt:M.P/F.P Text:-11.2F
Vapor Pres:2.1
Vapor Density:4.1
Spec Gravity:0.090
Appearance and Odor:COLORLESS LIQUID

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS
Stability Condition to Avoid:HEAT, OPEN FLAME, & OTHER SOURCES OF
IGNITION.
Hazardous Decomposition Products:CO, CO2

Waste Disposal Methods:BURN IN A CHEMICAL INCINERATOR EQUIPPED W/AN
AFTERBURNER & SCRUBBER IN ACCORDANCE W/LOCAL, STATE & FEDERAL
REGULATIONS.

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.