| Product Identification | Back to Contents | 【Product Name】
3,5-Dimethylpyrazole | 【Synonyms】
,5-Dimethylpyrazole
1,2,3-Triazole
1H-3,5-Dimethylpyrazole
2H-1,2,3-Triazole
2H-Triazole
Osotriazole
Pyrrodiazole
TH 564
Triazacyclopentadiene
U 6245 | 【CAS】
288-36-8 | 【CAS】
67-51-6 | 【Formula】
C2H3N3 | 【Formula】
C5H8N2 | 【Molecular Weight】
69.06 | 【Molecular Weight】
96.13 | 【EINECS】
200-657-5 | 【RTECS】
UQ6477600 | 【RTECS Class】
Drug | 【Beilstein/Gmelin】
104766 | 【Beilstein/Gmelin】
106325 | 【Beilstein Reference】
4-26-00-00029 | 【Beilstein Reference】
5-23-05-00110 |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Solid. | 【Appearance】
White powder. | 【Solubility in water】
Soluble | 【Solubility in water】
Very soluble | 【Melting Point】
23-25 | 【Boiling Point】
208 | 【Boiling Point】
218 | 【Vapor Pressure】
0.2 (25 C) | 【Vapor Pressure】
0.4 (25 C) | 【Density】
0.8839 g/cm3 (16C) | 【Density】
1.192 g/cm3 | 【pKa/pKb】
9.00 (pKa) | 【pKa/pKb】
9.74 (pKb) | 【Partition Coefficient】
.23 | 【Partition Coefficient】
1.24 | 【Heat Of Vaporization】
42.1 kJ/mol | 【Heat Of Vaporization】
43.6 kJ/mol | 【Heat Of Combustion】
-3130 kJ/mol | 【Usage】
Building block for more complex chemical compounds, such as pharmaceutical drugs like tazobactam. | 【Refractive Index】
1.4854 (25 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
Get medical aid. Wash mouth out with water. | 【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. | 【Inhalation】
Causes respiratory tract irritation. May be harmful if inhaled. | 【Skin】
Causes skin irritation. May be harmful if absorbed through the skin. | 【Skin】
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. | 【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. | 【Eyes】
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. | 【Eyes】
Causes eye irritation. |
| Handling and Storage | Back to Contents | 【Storage】
Store in a cool, dry place. Store in a tightly closed container. | 【Storage】
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. | 【Handling】
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. |
| Hazards Identification | Back to Contents | 【Ingestion】
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. | 【Ingestion】
May cause irritation of the digestive tract. May be harmful if swallowed. | 【Inhalation】
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. | 【Skin】
May cause skin irritation. The toxicological properties of this material have not been fully investigated. | 【Eyes】
May cause eye irritation. The toxicological properties of this material have not been fully investigated. | 【EC Risk Phrase】
R 22 | 【EC Risk Phrase】
R 22 36/37/38 | 【EC Safety Phrase】
S 26 36/37/39 | 【EC Safety Phrase】
S 36/37 |
| 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. | 【Personal Protection】
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. |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
107 | 【Flash Point】
91 | 【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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam. | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation. | 【Small spills/leaks】
Vacuum or sweep up material and place into a suitable disposal container. |
| Stability and Reactivity | Back to Contents | 【Stability】
No data. | 【Incompatibilities】
Oxidizing agents. | 【Stability】
Stable under normal temperatures and pressures. | 【Incompatibilities】
Strong oxidizing agents, acids, acetic anhydride, acid chlorides, carbon dioxide. | 【Disposal Code】
5 | 【Decomposition】
Nitrogen oxides, carbon monoxide, carbon dioxide. | 【Decomposition】
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. |
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