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Pyrazole

Pyrazole
Pyrazole structure
CAS No.
288-13-1
Chemical Name:
Pyrazole
Synonyms
PYRAZOL;PYRAZOLE;Pyrrazole;1H-Pyrazol;1,2-DIAZOL;1H-PYRAZOLE;1,2-DIAZOLE;Pyrazole ,99%;2-PyrroMonazole;PYRAZOLE, 98%, PURE
CBNumber:
CB6689669
Molecular Formula:
C3H4N2
Formula Weight:
68.08
MOL File:
288-13-1.mol

Pyrazole Properties

Melting point:
67-70 °C(lit.)
Boiling point:
186-188 °C(lit.)
Density 
1.4088 (rough estimate)
refractive index 
1.4203
Flash point:
186-188°C
storage temp. 
Store below +30°C.
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
CAS DataBase Reference
288-13-1(CAS DataBase Reference)
NIST Chemistry Reference
1H-Pyrazole(288-13-1)
EPA Substance Registry System
1H-Pyrazole(288-13-1)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P201 Obtain special instructions before use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Pyrazole price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich P56607 Pyrazole 98% 288-13-1 5g $14 2018-11-13 Buy
Sigma-Aldrich P56607 Pyrazole 98% 288-13-1 25g $50.7 2018-11-13 Buy
TCI Chemical P0546 Pyrazole >98.0%(GC)(T) 288-13-1 25g $36 2018-11-22 Buy
TCI Chemical P0546 Pyrazole >98.0%(GC)(T) 288-13-1 250g $107 2018-11-22 Buy
Alfa Aesar A14186 1H-Pyrazole, 98% 288-13-1 100g $128 2018-11-13 Buy

Pyrazole Chemical Properties,Uses,Production

Chemical Properties

white to yellow crystals or crystalline powder

Uses

Used as a ligand to prepare organometallic compounds.1,2

Uses

Chelating agent; in organic synthesis.

Uses

Pyrazole is used in organic synthesis and asa chelating agent.

Definition

ChEBI: The 1H-tautomer of pyrazole.

Definition

A heterocyclic crystalline aromatic compound with a five-membered ring containing three carbon atoms and two nitrogen atoms.

Definition

pyrazole: An unsaturated heterocycliccompound having two nitrogenatoms in a five-membered ring,C3H4N2; m.p. 66–70°C; b.p. 168–188°C. Pyrazine 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


Pyrazole Suppliers

Global( 318)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Yancheng Green Chemicals Co.,Ltd
86-515-87883661
86-515-87883652 sales@greenchem-china.com CHINA 348 58
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 sales@capotchem.com China 19918 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21751 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555
+86-021-57951555 jack.li@time-chemicals.com CHINA 1365 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
Anhui Royal Chemical Co., Ltd.
+86-025-86736275
dana.jiang@royal-chem.com CHINA 488 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 27142 58
Shaanxi Yikanglong Biotechnology Co., Ltd.
17791478691
yklbiotech@163.com CHINA 297 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 sales@jushengtech.com CHINA 28236 58

View Lastest Price from Pyrazole manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-05-24 Pyrazole
288-13-1
US $1.00 / KG 1KG 98% 100KG career henan chemical co
2019-04-02 Pyrazole
288-13-1
US $10.00 / KG 100g 99% 10tons Hebei Jimi Trading Co., Ltd.

Pyrazole Spectrum


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