Pyrazole
- Product Name
- 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
- Formula Weight
- 68.08
- MOL File
- 288-13-1.mol
Pyrazole Property
- 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)
- NIST Chemistry Reference
- 1H-Pyrazole(288-13-1)
- EPA Substance Registry System
- Pyrazole (288-13-1)
Safety
- 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)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H302Harmful if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H318Causes serious eye damage
H373May cause damage to organs through prolonged or repeated exposure
H412Harmful to aquatic life with long lasting effects
- Precautionary statements
-
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P314Get medical advice/attention if you feel unwell.
N-Bromosuccinimide Price
- Product number
- P56607
- Product name
- Pyrazole
- Purity
- 98%
- Packaging
- 5g
- Price
- $17.9
- Updated
- 2024/03/01
- Product number
- P56607
- Product name
- Pyrazole
- Purity
- 98%
- Packaging
- 25g
- Price
- $63.8
- Updated
- 2024/03/01
- Product number
- 8.07572
- Product name
- Pyrazole
- Purity
- for synthesis
- Packaging
- 25g
- Price
- $86
- Updated
- 2024/03/01
- Product number
- P0546
- Product name
- Pyrazole
- Purity
- >98.0%(GC)(T)
- Packaging
- 25g
- Price
- $43
- Updated
- 2024/03/01
- Product number
- P0546
- Product name
- Pyrazole
- Purity
- >98.0%(GC)(T)
- Packaging
- 250g
- Price
- $118
- Updated
- 2024/03/01
Pyrazole Chemical Properties,Usage,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
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View Lastest Price from Pyrazole manufacturers
- Product
- Pyrazole 288-13-1
- Price
- US $14000.00-1200000.00/kg
- Min. Order
- 1000kg
- Purity
- 99%
- Supply Ability
- 500 tons
- Release date
- 2023-12-14
- Product
- Pyrazole 288-13-1
- Price
- US $14000.00-1200000.00/kg
- Min. Order
- 1000kg
- Purity
- 99%
- Supply Ability
- 500 tons
- Release date
- 2023-12-12
- Product
- Pyrazole 288-13-1
- Price
- US $14000.00-120000.00/kg
- Min. Order
- 1000kg
- Purity
- 99%
- Supply Ability
- 500 tons
- Release date
- 2023-12-12