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edaravone 89-25-8 MSDS
Name: 3-Methyl-1-phenyl-2-pyrazolin-5-one 99% Material Safety Data Sheet
Synonym: 3-Methyl-1-phenyl-5-pyrazolone; Norphenazone; 2,4-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one; 2-Pyrazolin-5-one, 3-methyl-1-phenyl-; 1-Phenyl-3-methyl-5-oxo-2-pyrazolin
CAS: 89-25-8
Section 1 - Chemical Product   MSDS Name:3-Methyl-1-phenyl-2-pyrazolin-5-one 99% Material Safety Data Sheet
Synonym:3-Methyl-1-phenyl-5-pyrazolone; Norphenazone; 2,4-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one; 2-Pyrazolin-5-one, 3-methyl-1-phenyl-; 1-Phenyl-3-methyl-5-oxo-2-pyrazolin

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
89-25-8 3-Methyl-1-phenyl-2-pyrazolin-5-one 99 201-891-0
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Light sensitive.
Potential Health Effects
Eye:
Causes mild eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Store protected from light.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 89-25-8: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Crystals
Color: white
Odor: None reported.
pH: Not available.
Vapor Pressure: < 0.01 mm Hg @ 20 C
Viscosity: Not available.
Boiling Point: 287 deg C @ 265.00mmHg
Freezing/Melting Point: 129.00 - 130.00 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: >300 deg C
Solubility in water: Soluble in hot water.
Specific Gravity/Density:
Molecular Formula: C10H10N2O
Molecular Weight: 174.20

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, light, dust generation, strong oxidants.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of nitrogen, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 89-25-8: UQ9625000 LD50/LC50:
CAS# 89-25-8: Draize test, rabbit, eye: 500 mg/24H Mild; Oral, mouse: LD50 = 1683 mg/kg; Oral, rat: LD50 = 1915 mg/kg.
Carcinogenicity:
3-Methyl-1-phenyl-2-pyrazolin-5-one - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 89-25-8: 1
Canada
CAS# 89-25-8 is listed on Canada's DSL List.
CAS# 89-25-8 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 89-25-8 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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