Pyrazole
- CAS No.
- 288-13-1
- Chemical Name:
- Pyrazole
- Synonyms
- 1H-PYRAZOLE;PYRAZOL;1H-Pyrazol;Pyrrazole;Pyrazole, pure, 98%;PYRAZOLE;Ryrazole;1,2-DIAZOL;1,2-DIAZOLE;Pyrazole>
- CBNumber:
- CB6689669
- Molecular Formula:
- C3H4N2
- Molecular Weight:
- 68.08
- MDL Number:
- MFCD00005234
- MOL File:
- 288-13-1.mol
- MSDS File:
- SDS
| Melting point | 67-70 °C (lit.) |
|---|---|
| Boiling point | 186-188 °C (lit.) |
| Density | 1.4088 (rough estimate) |
| vapor pressure | 21Pa at 20℃ |
| refractive index | 1.4203 |
| Flash point | 186-188°C |
| storage temp. | Store below +30°C. |
| solubility | Chloroform, Methanol |
| form | Crystals or Crystalline Powder |
| pka | 2.49(at 25℃) |
| color | White to yellow |
| Water Solubility | SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,7960 |
| BRN | 103775 |
| InChIKey | WTKZEGDFNFYCGP-UHFFFAOYSA-N |
| LogP | 0.33 at 25℃ |
| CAS DataBase Reference | 288-13-1(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 3QD5KJZ7ZJ |
| NIST Chemistry Reference | 1H-Pyrazole(288-13-1) |
| EPA Substance Registry System | Pyrazole (288-13-1) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS05,GHS06,GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H311-H315-H318-H373-H412 | |||||||||
| Precautionary statements | P273-P280-P301+P312-P302+P352+P312-P305+P351+P338-P314 | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22-36/37/38-52-20/21/22 | |||||||||
| Safety Statements | 26-36/37-61-37/39-36 | |||||||||
| RIDADR | 2811 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | UQ4900000 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 6.1(b) | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29331990 | |||||||||
| Toxicity | LD50 (24 hr) in rats, mice (mmol/kg): 19, 21 i.v.; 21, 22 orally (Magnussen) | |||||||||
| NFPA 704 |
|
Pyrazole price More Price(29)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | P56607 | Pyrazole 98% | 288-13-1 | 5g | $17.9 | 2024-03-01 | Buy |
| Sigma-Aldrich | P56607 | Pyrazole 98% | 288-13-1 | 25g | $63.8 | 2024-03-01 | Buy |
| Sigma-Aldrich | 8.07572 | Pyrazole for synthesis | 288-13-1 | 25g | $86 | 2024-03-01 | Buy |
| TCI Chemical | P0546 | Pyrazole >98.0%(GC)(T) | 288-13-1 | 25g | $43 | 2024-03-01 | Buy |
| TCI Chemical | P0546 | Pyrazole >98.0%(GC)(T) | 288-13-1 | 250g | $118 | 2024-03-01 | Buy |
Pyrazole Chemical Properties,Uses,Production
Chemical Properties
white to yellow crystals or crystalline powder
Uses
Pyrazole is used in organic synthesis and asa chelating agent.
Definition
ChEBI: 1H-pyrazole is the 1H-tautomer of pyrazole. It is a conjugate base of a pyrazolium. It is a conjugate acid of a pyrazol-1-ide. It is a tautomer of a 3H-pyrazole and a 4H-pyrazole.
General Description
Pyrazine is a heterocyclic crystalline aromatic compound with a five-membered ring containing three carbon atoms and two nitrogen atoms. It is a symmetricdiazine.
Hazard
Toxic by ingestion and inhalation, irritant to skin and eyes.
Health Hazard
The acute toxic symptoms from oral administrationof pyrazole in experimental animalswere ataxia, muscle weakness, and respiratorydepression. It is less toxic than pyrroleand pyrrolidine. The oral LD50 value in miceis within the range 1450 mg/kg.
Pyrazole exhibited reproductive toxicityin rats and mice when administered by oralor intraperitoneal route. The effects includefetal death, developmental abnormalities pertainingto the urogenital system, and postimplantationmortality.
Fire Hazard
Noncombustible solid.
Safety Profile
Moderately toxic by ingestion and intraperitoneal routes. Experimental teratogenic and reproductive effects. When heated to decomposition it emits toxic fumes of NOx.
Purification Methods
Crystallise pyrazole from pet ether, cyclohexane, or water. Its solubility in H2O at 9.6o is 2.7moles/L, and at 24.8o it is 19.4moles/L; in cyclohexane at 31.8o it is 0.577moles/L, and at 56.2o it is 5.86moles/L; and in benzene at 5.2o it is 0.31moles/L, and at 46.5o it is 16.8moles/1000mL. [Barszcz et al. J Chem Soc, Dalton Trans 2025 1986, Beilstein 23 H 39, 23 I 15, 23 II 33, 23 III/IV 550, 23/4 V 122.]
Pyrazole Preparation Products And Raw materials
Raw materials
Preparation Products
1of5
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Yancheng Green Chemicals Co.,Ltd | +undefined-86-25-86655873 | info@royal-chem.com | China | 114 | 58 |
| Gansu Jinyuantai New Material Co., Ltd. | +86-025-86618065 +86-13914714331 | sales@jinyuantaichem.com | China | 73 | 58 |
| Ningxia Jinhua Chemical Co.,Ltd | 025-52279164 | info@nxjhchem.com | China | 79 | 58 |
| Changde Changlian Chemical Co., Ltd. | +86-25-86736270 +86-15905172087 | brian.he@royal-chem.com | China | 103 | 58 |
| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 | sales@hbmojin.com | China | 12456 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8617531190177 | peter@yan-xi.com | China | 5993 | 58 |
| Henan Tengmao Chemical Technology Co. LTD | +8615238638457 | salesvip2@hntmhg.com | China | 415 | 58 |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29797 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21691 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 | jack.li@time-chemicals.com | China | 1807 | 55 |
Related articles
- Pyrazole - Properties, Synthesis, Reactions etc.
- Pyrazole is a colorless crystalline solid with a pyridine-like odor and weak base, with a pKb of 11.5. It is partially solub....
- Jan 29，2022
View Lastest Price from Pyrazole manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2024-04-25 | Pyrazole
288-13-1
|
US $14000.00-1200000.00 / kg | 1000kg | 99% | 500 tons | Ningxia Jinhua Chemical Co.,Ltd | |
 |
2024-04-25 | Pyrazole
288-13-1
|
US $14000.00-1200000.00 / kg | 1000kg | 99% | 500 tons | Changde Changlian Chemical Co., Ltd. | |
 |
2024-04-24 | Pyrazole
288-13-1
|
US $14000.00-1200000.00 / kg | 1000kg | 99% | 500 tons | Gansu Jinyuantai New Material Co., Ltd. |