821-10-3ClCC#CCClRCHDLEVSZBOHOS-UHFFFAOYSA-N821-10-3DTXSID0061165
Danger
H301 (11.1%): Toxic if swallowed [Danger Acute toxicity, oral];H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation];H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation];H335 (95.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 45 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.;Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Acute Tox. 3 (11.1%);Skin Irrit. 2 (100%);Eye Irrit. 2 (100%);STOT SE 3 (95.6%)
Acute toxicity (Oral) - Category 3
용도1,4-Dichloro-2-butyne used in the synthesis of 1,4-disubstituted 1,2,3-triazoles. Also, it is used in the approach of the 20S-camptothecin family of antitumor agents.
1,4-Dichloro-2-butyne could be conveniently prepared by treating 1,4-butynediol with Thionyl Chloride. However, as a precautionary measure, the medium is diluted with CH2Cl2 and cooled to 30°C before adding thionyl chloride to avoid hazards associated with the exothermicity of the reaction.
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CLEAR COLORLESS TO YELLOWISH LIQUID