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Cas Database |
| Name |
3-Nitro-1H-pyrazole |
EINECS | 640-509-0 |
| CAS No. | 26621-44-3 | Density | 1.553 g/cm3 |
| PSA | 74.50000 | LogP | 0.84110 |
| Solubility | N/A | Melting Point |
173-175 °C |
| Formula | C3H3N3O2 | Boiling Point | 333.962 °C at 760 mmHg |
| Molecular Weight | 113.076 | Flash Point | 155.775 °C |
| Transport Information | N/A | Appearance | light brown powder |
| Safety | 22-26-36/37/39 | Risk Codes | 22-36/37/38 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
Pyrazole,3-nitro- (8CI);5-Nitropyrazole; |
Article Data | 39 |
3-Nitro-1H-pyrazole Chemical Properties
IUPAC Name: 5-Nitro-1H-pyrazole
Synonyms of 1H-Pyrazole, 3-nitro- (CAS NO.26621-44-3): Djw 94 ; 3-Nitropyrazole ; Djw-94
CAS NO: 26621-44-3
Molecular Formula of 1H-Pyrazole, 3-nitro- (CAS NO.26621-44-3): C3H3N3O2
Molecular Weight: 113.0748
Molecular Structure:
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Melting point: 173-175 °C
H bond acceptors: 5
H bond donors: 1
Freely Rotating Bonds: 1
Polar Surface Area: 63.64 Å2
Index of Refraction: 1.612
Molar Refractivity: 25.32 cm3
Molar Volume: 72.8 cm3
Surface Tension: 78.1 dyne/cm
Density of 1H-Pyrazole, 3-nitro- (CAS NO.26621-44-3): 1.552 g/cm3
Flash Point: 155.8 °C
Enthalpy of Vaporization: 55.4 kJ/mol
Boiling Point: 334 °C at 760 mmHg
Vapour Pressure: 0.000256 mmHg at 25°C
3-Nitro-1H-pyrazole Safety Profile
Hazard Codes: 
Xn
Risk Statements: 22-36/37/38
R22: Harmful if swallowed.
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 22-26-36/37/39
S22: Do not breathe dust.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
HazardClass: IRRITANT
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