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![双吡嗪并[2,3-f:2′,3′-h]喹喔啉-2,3,6,7,10,11-己腈 95% (HPLC)](/deepweb/assets/sigmaaldrich/product/structures/151/558/c0e2c95f-5228-4864-a7a5-4b9765a19840/640/c0e2c95f-5228-4864-a7a5-4b9765a19840.png)
等級
ACS reagent
anhydrous
品質等級
蒸汽壓力
<1 mmHg ( 20 °C)
產品線
Redi-Dri™
化驗
≥99%
形狀
solid
品質
free-flowing
雜質
≤0.2% water
燃燒殘留物
≤0.1%
pH值
9.5-11.0 (25 °C, 5% in H2O)
pKa (25 °C)
6.95
bp
256 °C (lit.)
mp
88-91 °C (lit.)
正離子痕跡
Fe: ≤0.001%
SMILES 字串
c1c[nH]cn1
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
InChI 密鑰
RAXXELZNTBOGNW-UHFFFAOYSA-N
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應用
咪唑由于具有两性性质和快速的质子转移能力，可作为质子转移试剂用于多孔有机聚合物合成。
咪唑作为催化剂的用途：
咪唑作为催化剂的用途：
- 在氯硅烷/DMF存在下，醇、羧酸和胺类物质的硅烷化反应。
- 羧酸和光气制备相应酰氯。
- 咪唑-PPh3/I2催化体系用于醇变为碘化物的转换反应。
- 咪唑-PPh3/I2用于二醇脱氧反应。
特别适用于 pH 6.2-7.8 范围内的缓冲液
法律資訊
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
訊號詞
Danger
危險聲明
危險分類
Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C
儲存類別代碼
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
水污染物質分類（WGK）
WGK 2
閃點（°F）
293.0 °F - closed cup
閃點（°C）
145 °C - closed cup
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