Chemical PropertiesPyridine is a weak base (pKa= 5.25); a 0.2 M solution has a pH of 8.5 (HSDB 1988). Its carbon atoms are deactivated towards electrophilic substitution. This is especially true in acidic media, where salts form at the nitrogen. It does, however, readily undergo nucleophilic...
分子式 C5H5N 分子量 79.1 EINECS号 相关类别 Mol文件 110-86-1.mol 结构式 Pyridine 性质 熔点 -42 °C 沸点 115 °C 密度 0.978 蒸气密度 2.73 (vs air) 蒸气压 18 mm Hg @ at 20°C 折射率 1.509-1.510 闪点 17 °C 形态 液体 酸度系数(pKa) 5.23±0.10(Predicted) 颜色 无色至淡黄色 ...
吡啶(110-86-1,Pyridine),也称为py或氮杂苯,属于称为吡啶和衍生物的有机化合物。 吡啶和衍生物是含有吡啶环的化合物,该吡啶环是由一个氮原子和五个碳原子组成的六元芳族杂环。 吡啶以液态,可溶于水和非常强的碱性化合物(基于其pKa)而存在。 货品编码规格纯度价格 (¥)现价(¥)特价(¥)库存描述数量...
MOL File924649-14-9.mol Chemical Properties Melting point121-123 °C Boiling point178.1±40.0 °C(Predicted) Density1.369±0.06 g/cm3(Predicted) pka0.11±0.30(Predicted) Preparation Products And Raw materials Pyridine, 4-(1,3-dioxolan-2-yl)-3,5-difluoro- Suppliers...
Product NamePyridine, 2-bromo-4-(2,2-dimethylpropyl)- CAS2664214-61-1 MFC10H14BrN MW228.13 EINECS MOL File2664214-61-1.molChemical Properties Boiling point 275.9±20.0 °C(Predicted) Density 1.258±0.06 g/cm3(Predicted) pka 1.74±0.26(Predicted)...
Zolpidem is characterized by a single ionization constant, for which the pKa = 6.2 [3]. 1.2.4 Hygroscopicity A white or almost white hygroscopic crystalline powder [3]. 1.2.5 Thermal methods of analysis 1.2.5.1 Melting behavior The melting point of zolpidem is 196 °C. The melting point of...
Pyridine is a weak base (pKa= 5.25); a 0.2 M solution has a pH of 8.5 (HSDB 1988). Its carbon atoms are deactivated towards electrophilic substitution. This is especially true in acidic media, where salts form at the nitrogen. It does, however, readily undergo nucleophilic substitution, pr...
pKa Values of pyridine derivatives having sulfenyl and sulfinyl groups attached to either 2- or 2,6-positions in the pyridine nuclei were measured affording the following values; 2-SCH3 (3.64), 2-S(O)CH3 (0.17), 2-CH2SCH3 (5.40), 2-CH2S(O)CH3 (3.10), 2-CH2OCH3 (4.35), 2,6-(...
英文同义词:2,4,5-Triamino-pyridine;pyridine-2,4,5-triaMine;2,4,5-TriaMinopyridiChemicalbooknehydrochlorideCAS号:23244-87-3 分子式:C5H8N4 分子量:124.14382 沸点453.2±40.0°C(Predicted) 密度1.387±0.06g/cm3(Predicted) 酸度系数(pKa)9.23±0.24(Predicted) ...
酸度系数(pKa): 4.13±0.25(Predicted) 安全信息 Pyridine, 2-?(3,?4-?difluorophenyl)?-性质、用途与生产工艺 Pyridine, 2-?(3,?4-?difluorophenyl)?-上下游产品信息 上游原料 下游产品 Pyridine, 2-?(3,?4-?difluorophenyl)?-生产厂家 全球有 0家供应商Pyridine, 2-?(3,?4-?difluorophenyl)?-国内生产...