Name | Pyrazole |
Synonyms | Pyrazol Pyrazole Pyrrazole 1,2-Diazole 1H-pyrazole 2-PyrroMonazole PYRAZOLE FOR SYNTHESIS 25 G |
CAS | 288-13-1 |
EINECS | 206-017-1 |
InChI | InChI=1/C3H4N2/c1-2-4-5-3-1/h1-3H,(H,4,5) |
InChIKey | WTKZEGDFNFYCGP-UHFFFAOYSA-N |
Molecular Formula | C3H4N2 |
Molar Mass | 68.08 |
Density | 1.4088 (rough estimate) |
Melting Point | 67-70 °C (lit.) |
Boling Point | 186-188 °C (lit.) |
Flash Point | 186-188°C |
Water Solubility | SOLUBLE |
Solubility | Soluble in water, soluble in alcohol, ether and benzene. |
Vapor Presure | 21Pa at 20℃ |
Appearance | White to yellow crystals |
Color | White to yellow |
Merck | 14,7960 |
BRN | 103775 |
pKa | 2.49(at 25℃) |
Storage Condition | Store below +30°C. |
Sensitive | Hygroscopic |
Refractive Index | 1.4203 |
MDL | MFCD00005234 |
Physical and Chemical Properties | Melting Point 67-70 °c, boiling point 186-188 °c. |
Use | Pyrazoline, a derivative of pyrazole, is an important intermediate for pharmaceuticals and dyes |
Hazard Symbols | Xn - Harmful |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R52 - Harmful to aquatic organisms R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S37/39 - Wear suitable gloves and eye/face protection S36 - Wear suitable protective clothing. |
UN IDs | 2811 |
WGK Germany | 1 |
RTECS | UQ4900000 |
TSCA | Yes |
HS Code | 29331990 |
Hazard Class | 6.1(b) |
Packing Group | III |
Toxicity | LD50 (24 hr) in rats, mice (mmol/kg): 19, 21 i.v.; 21, 22 orally (Magnussen) |