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

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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)

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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)

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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.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: P56607
Product name: Pyrazole
Purity: 98%
Packaging: 5g
Price: $17.9
Updated: 2024/03/01

Sigma-Aldrich

Product number: P56607
Product name: Pyrazole
Purity: 98%
Packaging: 25g
Price: $63.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.07572
Product name: Pyrazole
Purity: for synthesis
Packaging: 25g
Price: $86
Updated: 2024/03/01

TCI Chemical

Product number: P0546
Product name: Pyrazole
Purity: >98.0%(GC)(T)
Packaging: 25g
Price: $43
Updated: 2024/03/01

TCI Chemical

Product number: P0546
Product name: Pyrazole
Purity: >98.0%(GC)(T)
Packaging: 250g
Price: $118
Updated: 2024/03/01

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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

5-Methyl-2-phenyl-1,2-dihydropyrazol-3-one

Preparation Products

(6-(1H-Pyrazol-1-yl)pyridin-3-yl)methanol 3-(1H-PYRAZOL-1-YL)ANILINE 1-(1H-pyrazol-1-yl)propan-2-amine 2-BROMO-6-(1H-PYRAZOL-1-YL)PYRIDINE 4-Pyrazol-1-yl-benzaldehyde 5-Amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole Metazachlor Pyraclofos 2-(1H-PYRAZOL-1-YL)BENZOIC ACID 3-(1H-PYRAZOL-3-YL)BENZOIC ACID Fenpyroximate Methyl 6-(1H-pyrazol-1-yl)pyridine-3-carboxylate 6-(1H-PYRAZOL-1-YL)NICOTINONITRILE 6-(1H-PYRAZOL-1-YL)NICOTINIC ACID 4-(1H-PYRAZOL-1-YL)PHENYL ISOTHIOCYANATE Fipronil 5-Chloromethyl-2-(pyrazol-1-yl)pyridine 4-Pyrazolecarboxylic acid N-METHYL-6-(1H-PYRAZOL-1-YL)NICOTINAMIDE 3-Phenyl-1H-pyrazole 3-(1H-PYRAZOL-1-YL)BENZALDEHYDE Climbazole Pyrazole-3-boronic acid [6-(1H-PYRAZOL-1-YL)PYRIDIN-3-YL]METHYLAMINE

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Pyrazole Suppliers

Americas 1 Belgium 1 China 419 Europe 3 Germany 6 India 19 Japan 5 Slovakia 1 Switzerland 2 The Netherlands 1 Ukraine 1 United Kingdom 11 United States 42 Global 512

Apollo Scientific Ltd.

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Apin Chemicals Limited (UK)

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Carbosynth Limited

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CARBONE SCIENTIFIC CO.,LTD

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MOLEKULA Ltd.

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UK GREEN SCIENTIFIC CO.,LIMITED

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Fluorochem Ltd

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Eurolabs Limited

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Fluorochem Ltd.

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Apin Chemicals Ltd.

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VWR International

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ProdList: 6548
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View Lastest Price from Pyrazole manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd

Product: Pyrazole 288-13-1
Price: US $85.00-25.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-05-22

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Pyrazole 288-13-1
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-01-18

Ningxia Jinhua Chemical Co.,Ltd

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

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