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3,5-Dimethylpyrazole

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[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.
[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.
[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.
[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
[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.
[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)
[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]

"CASEN_288-36-8.htm">288-36-8
[CAS]

"CASEN_67-51-6.htm">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
[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]

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.
[HS Code]

2933 19 90