3-(4-Methylphenyl)-1H-pyrazole

Modify Date: 2026-07-05 18:34:25

3-(4-Methylphenyl)-1H-pyrazole Structure
3-(4-Methylphenyl)-1H-pyrazole structure
Common Name 3-(4-Methylphenyl)-1H-pyrazole
CAS Number 59843-75-3 Molecular Weight 158.200
Density 1.1±0.1 g/cm3 Boiling Point 343.9±11.0 °C at 760 mmHg
Molecular Formula C10H10N2 Melting Point 82-86ºC
MSDS N/A Flash Point 162.4±12.2 °C

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 5-(4-methylphenyl)-1H-pyrazole
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.1±0.1 g/cm3
Boiling Point 343.9±11.0 °C at 760 mmHg
Melting Point 82-86ºC
Molecular Formula C10H10N2
Molecular Weight 158.200
Flash Point 162.4±12.2 °C
Exact Mass 158.084396
PSA 28.68000
LogP 2.68
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.591
InChIKey VOMXXXBTALQTAK-UHFFFAOYSA-N
SMILES Cc1ccc(-c2ccn[nH]2)cc1

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

Name: 3-(4-Tolyl)pyrazole 99+% Material Safety Data Sheet
Synonym: None
CAS: 59843-75-3
Section 1 - Chemical Product MSDS Name:3-(4-Tolyl)pyrazole 99+% Material Safety Data Sheet
Synonym:None

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
59843-75-3 3-(4-Tolyl)pyrazole 99+ unlisted
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
Eyes: 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:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
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. Use water spray, dry chemical, carbon dioxide, 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. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed.
Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 59843-75-3: 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: Powder
Color: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 82-86 C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C10H10N2
Molecular Weight: 158.20

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, excess heat.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of nitrogen, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 59843-75-3 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
3-(4-Tolyl)pyrazole - Not listed by ACGIH, IARC, or NTP.

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.
S 28A After contact with skin, wash immediately with
plenty of water.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 59843-75-3: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 59843-75-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 59843-75-3 is not listed on the TSCA inventory.
It is for research and development use only.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes Xn
Safety Phrases S24/25

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~86%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Gerard, Anne-Laure; Bouillon, Alexandre; Mahatsekake, Clement; Collot, Valerie; Rault, Sylvain Tetrahedron Letters, 2006 , vol. 47, # 27 p. 4665 - 4669

~9%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), , p. 1945 - 1950

~%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Chemistry of Heterocyclic Compounds, , vol. 38, # 6 p. 668 - 676

~%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

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Literature: Synthesis, , # 6/7 p. 690 - 691

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3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

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Literature: Synthesis, , # 6/7 p. 690 - 691

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3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Synthesis, , # 6/7 p. 690 - 691

~%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Journal of Organic Chemistry, , vol. 70, # 19 p. 7530 - 7536

~%

3-(4-Methylphenyl)-1H-pyrazole Structure

3-(4-Methylphen...

CAS#:59843-75-3

Learn More
Literature: Synlett, , vol. 1997, # 8 p. 959 - 961

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  3

DownStream  0

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

MFCD00665963
3-(4-Methylphenyl)-1H-pyrazole
3-p-tolylpyrazole
5-p-Tolyl-1H-pyrazole
5-(4-Methylphenyl)-1H-pyrazole

 3-(4-Methylphenyl)-1H-pyrazole | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the InChIKey of 5-(4-methylphenyl)-1H-pyrazole?
A: InChIKey of 5-(4-methylphenyl)-1H-pyrazole is VOMXXXBTALQTAK-UHFFFAOYSA-N.
Q: What is the molecular formula of 5-(4-methylphenyl)-1H-pyrazole?
A: Molecular formula of 5-(4-methylphenyl)-1H-pyrazole is C10H10N2.
Q: What is the melting point of 5-(4-methylphenyl)-1H-pyrazole?
A: Melting point of 5-(4-methylphenyl)-1H-pyrazole is 82-86ºC.
Q: What English synonyms does 5-(4-methylphenyl)-1H-pyrazole have?
A: English synonyms of 5-(4-methylphenyl)-1H-pyrazole: MFCD00665963, 3-(4-Methylphenyl)-1H-pyrazole, 3-p-tolylpyrazole, 5-p-Tolyl-1H-pyrazole, 5-(4-Methylphenyl)-1H-pyrazole.
Q: What is the polar surface area (PSA) of 5-(4-methylphenyl)-1H-pyrazole?
A: Polar surface area (PSA) of 5-(4-methylphenyl)-1H-pyrazole is 28.68000.
Q: What is the molecular weight of 5-(4-methylphenyl)-1H-pyrazole?
A: Molecular weight of 5-(4-methylphenyl)-1H-pyrazole is 158.200.
Q: What are the upstream materials of 5-(4-methylphenyl)-1H-pyrazole?
A: Related upstream materials(CAS) of 5-(4-methylphenyl)-1H-pyrazole: 14377-02-7;104-87-0;624-31-7.
Q: What is the safety information for 5-(4-methylphenyl)-1H-pyrazole?
A: Safety information for 5-(4-methylphenyl)-1H-pyrazole: S24/25.
Q: What is the SMILES notation of 5-(4-methylphenyl)-1H-pyrazole?
A: SMILES notation of 5-(4-methylphenyl)-1H-pyrazole is Cc1ccc(-c2ccn[nH]2)cc1.
Q: What is the boiling point of 5-(4-methylphenyl)-1H-pyrazole?
A: Boiling point of 5-(4-methylphenyl)-1H-pyrazole is 343.9±11.0 °C at 760 mmHg.

 3-(4-Methylphenyl)-1H-pyrazolefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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