| Product Identification | Back to Contents | 【Product Name】
1H-Pyrazole | 【Synonyms】
1,2-Diazole | 【CAS】
288-13-1 | 【Formula】
C3H4N2 | 【Molecular Weight】
68.08 | 【EINECS】
206-017-1 | 【RTECS】
UQ4900000 | 【RTECS Class】
Reproductive Effector | 【Merck】
12,8144 | 【Beilstein/Gmelin】
103775 | 【Beilstein Reference】
5-23-04-00122 | 【EC Class】
harmful, irritant |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Colorless crystals. | 【Solubility in water】
Very soluble | 【Melting Point】
66 - 68 | 【Boiling Point】
186 | 【Vapor Pressure】
0.89 (25 C) | 【Density】
1.026 - 0.952 g/cm3 (70 - 155 C) | 【pKa/pKb】
11.53 (pKb) | 【Partition Coefficient】
.32 | 【Heat Of Vaporization】
40.6 kJ/mol | 【Heat Of Combustion】
-1858 kJ/mol | 【Usage】
Chelating agent. | 【Refractive Index】
1.4203 (20 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. | 【Inhalation】
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. | 【Skin】
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. | 【Eyes】
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. |
| Handling and Storage | Back to Contents | 【Storage】
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. |
| Hazards Identification | Back to Contents | 【Inhalation】
Inhalation of dust may cause respiratory tract irritation. | 【Skin】
May cause skin irritation. | 【Eyes】
May cause eye irritation. | 【Ingestion】
May be harmful if swallowed. | 【Hazards】
During a fire, irritating and highly toxic gasesmay be generated by thermal decomposition or combustion. | 【EC Risk Phrase】
R 22 36/37/38 | 【EC Safety Phrase】
S 26 36/37/39 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. | 【Respirators】
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. | 【Exposure Effects】
May cause reproductive and fetal effects. |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
88 | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
3 | 【Incompatibilities】
Oxidizing agents, acids. | 【Stability】
Stable under normal temperatures and pressures. | 【Decomposition】
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen. |
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