4-Ethynyl-1H-pyrazole

Overview

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Identification

C#CC1=CNN=C1

InChI=1S/C5H4N2/c1-2-5-3-6-7-4-5/h1,3-4H,(H,6,7)

Safety & Regulations

• WarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
• DangerH311 (50%): Toxic in contact with skin [Danger Acute toxicity, dermal]
• WarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• DangerH318 (50%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• WarningH319 (50%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• WarningH335 (50%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• DangerH372 (50%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
• H412 (50%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Storage Conditions

Store at ambient temperature and humidity (2–8 °C).