Identification
Product identifiers, regulatory numbers, and supplier information
Product Information
- Product Name
- 3-Methyl-1-phenyl-2-pyrazolin-5-one
- Product Code
- 127460000; 127460050; 127461000; 127465000
- Chemical Name
- 3-Methyl-1-phenyl-2-pyrazolin-5-one
- Synonyms
- 2,4-Dihydro-5-methyl-2-phenyl-3H-pyrazol; 3-Methyl-1-phenyl-5-pyrazolone; 3-Methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one; Norphenazone
Regulatory Identifiers
- CAS Number
- 89-25-8 Check regulations →
- EC Number
- 201-891-0 Check regulations →
Identified Uses
Laboratory chemicals.
Uses advised against
No Information available
Manufacturers & Suppliers
Fisher Scientific UK
national supplier
Bishop Meadow Road, Loughborough, Leicestershire LE11 5RG, United Kingdom
Thermo Fisher Scientific
national supplier
Janssen Pharmaceuticalaan 3a, 2440 Geel, Belgium
Emergency Contacts
Emergency Contact
001-800-227-6701
Emergency Contact
+32 14 57 52 11
Emergency Contact
001-201-796-7100
Emergency Contact
+32 14 57 52 99
CHEMTREC
001-800-424-9300
CHEMTREC
001-703-527-3887
Hazard Identification
GHS classification, signal word, pictograms, and hazard statements
Hazard Classifications
GHS Pictograms
GHS07
Hazard Statements
Precautionary Statements
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Composition / Information on Ingredients
Chemical components, concentration ranges, and hazardous substance identification
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| 3-Methyl-1-phenyl-2-pyrazolin-5-one EC: 201-891-0 | 89-25-8 | 95% | Yes |
First Aid Measures
Emergency procedures for chemical exposure incidents
Remove to fresh air. If not breathing, give artificial respiration. Get medical attention if symptoms occur.
Wash off immediately with plenty of water for at least 15 minutes. If skin irritation persists, call a physician.
Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention.
Clean mouth with water and drink afterwards plenty of water. Get medical attention if symptoms occur.
Medical Treatment
Treat symptomatically.
Firefighting Measures
Extinguishing media, specific hazards, and firefighter protection
Water spray, carbon dioxide (CO2), dry chemical, alcohol-resistant foam.
No information available.
Thermal decomposition can lead to release of irritating gases and vapors.
Firefighter Protection
As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.
Accidental Release Measures
Spill cleanup procedures, containment, and environmental protection
Should not be released into the environment.
Sweep up and shovel into suitable containers for disposal.
Materials: suitable containers
Related Products
Similar products with comparable safety profiles
4,5-dimethyl-2,4-dihydro-3H-pyrazol-3-one
---
3-Amino-5-cyclopropyl-1H-pyrazole
CAS: 175137-46-9
3-Methylpyrrolidine
CAS: 34375-89-8
5-Ethyl-2-methylpyridine
---
5-Methylpiperidin-2-one
CAS: 3298-16-6
1-Methyl-2-pyrrolidinone
CAS: 872-50-4
1-Methyl-2-pyrrolidinone
CAS: 872-50-4
1-Methyl-2-pyrrolidinone
CAS: 872-50-4
Handling and Storage
Safe handling precautions, storage conditions, and workplace requirements
Wear personal protective equipment/face protection. Do not get in eyes, on skin, or on clothing. Avoid ingestion and inhalation.
Keep in a dry, cool and well-ventilated place. Keep container tightly closed.
Handle in accordance with good industrial hygiene and safety practice. Keep away from food, drink and animal feeding stuffs. Do not eat, drink or smoke when using this product. Remove and wash contaminated clothing and gloves, including the inside, before re-use. Wash hands before breaks and after work.
Exposure Controls / PPE
Occupational exposure limits, engineering controls, and protective equipment
Ensure adequate ventilation, especially in confined areas. Wherever possible, engineering control measures such as the isolation or enclosure of the process, the introduction of process or equipment changes to minimise release or contact, and the use of properly designed ventilation systems, should be adopted to control hazardous materials at source
Protective gloves. Glove material: Nitrile rubber, Neoprene, Natural rubber, PVC. Breakthrough time: See manufacturers recommendations. EU standard: EN 374. Glove comments: (minimum requirement)
Goggles (European standard - EN 166)
When workers are facing concentrations above the exposure limit they must use appropriate certified respirators. To protect the wearer, respiratory protective equipment must be the correct fit and be used and maintained properly. Large scale/emergency use: Use a NIOSH/MSHA or European Standard EN 136 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced Recommended Filter type: Particulates filter conforming to EN 143. Small scale/Laboratory use: Use a NIOSH/MSHA or European Standard EN 149:2001 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Recommended half mask:- Particle filtering: EN149:2001 When RPE is used a face piece Fit Test should be conducted
Long sleeved clothing.
Physical and Chemical Properties
Appearance, physical state, melting point, boiling point, and material characteristics
Stability and Reactivity
Chemical stability, hazardous reactions, and incompatible materials
Stable under normal conditions.
None known, based on information available
None under normal processing. Hazardous Polymerization No information available.
Strong oxidizing agents.
Nitrogen oxides (NOx). Carbon monoxide (CO). Carbon dioxide (CO2)
Ecological Information
Environmental toxicity, biodegradation, and bioaccumulation data
12.1. Toxicity
12.2. Persistence and degradability
12.3. Bioaccumulative potential
12.3. Bioaccumulative potential
12.4. Mobility in soil
The product is water soluble and highly mobile in soils, with the potential to spread in water systems.
12.5. Results of PBT and vPvB assessment
No data available for assessment.
12.6. Endocrine disrupting properties
This product does not contain any known or suspected endocrine disruptors
12.7. Other adverse effects
This product does not contain any known or suspected substance regarding Persistent Organic Pollutant and Ozone Depletion Potential.
Disposal Considerations
Waste treatment methods, disposal recommendations, and waste codes
Dispose of in accordance with the European Directives on waste and hazardous waste. Dispose of in accordance with local regulations.
Dispose of in accordance with the European Directives on waste and hazardous waste. Dispose of in accordance with local regulations.
Transport Information
UN numbers, shipping names, transport classes, and regulatory requirements
Regulatory Information
Chemical regulations, safety assessments, and compliance status
Frequently Asked Questions
Common questions about safety, handling, and properties
What other names is 3-Methyl-1-phenyl-2-pyrazolin-5-one known by?
3-Methyl-1-phenyl-2-pyrazolin-5-one is also known as: 2,4-Dihydro-5-methyl-2-phenyl-3H-pyrazol; 3-Methyl-1-phenyl-5-pyrazolone; 3-Methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one; Norphenazone
What is the hazard signal word for 3-Methyl-1-phenyl-2-pyrazolin-5-one?
The signal word is warning.
What is the physical form of 3-Methyl-1-phenyl-2-pyrazolin-5-one?
3-Methyl-1-phenyl-2-pyrazolin-5-one is a powder solid appearing as light yellow . It has odorless odor.
What is 3-Methyl-1-phenyl-2-pyrazolin-5-one used for?
Laboratory chemicals.
What are the hazard statements for 3-Methyl-1-phenyl-2-pyrazolin-5-one?
This substance has 1 hazard statement:
- H302: Harmful if swallowed
What is the melting point of 3-Methyl-1-phenyl-2-pyrazolin-5-one?
The melting point is 127 - 131 °C / 260.6 - 267.8 °F and the boiling point is 287 °C / 548.6 °F @ 265 mmHg.