甲酚红 基本信息
| 中文名称 | 甲酚红 |
|---|---|
| 中文同义词 | 邻甲酚磺酰酞,邻甲磺酞;甲酚红,INDICATOR;甲酚红,AR;甲酚红/邻甲酚红;甲酚红;邻甲酚红;鄰甲酚紅;鄰甲酚磺酞 |
| 英文名称 | Cresol Red |
| 英文同义词 | Phenol, 4,4-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis2-methyl-;Cresol Red;Cresol Red, Indicator grade, pure 25GR;Cresol Red, Indicator grade, pure 5GR;Cresol Red (0.1% in ca. 20% Ethanol) [for Titration];3,3-Bis(3-methyl-4-hydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide;Cresol Red,pure,Indicator grade;o-Cresol Red p.a. (green powder) |
| CAS号 | 1733-12-6 |
| 分子式 | C21H18O5S |
| 分子量 | 382.43 |
| EINECS号 | 217-064-2 |
| 相关类别 | 滴定;酸碱指示剂;细胞染色剂;其他生化试剂;分析试剂;专业试剂;色素类;生物染色剂;Organics;Analytical Chemistry;Indicator (pH);pH Indicators;染色剂和染料;Sulfonephthalein;生化试剂;生化试剂-色素类;试剂;细胞生物学-细胞氧化应激;化学试剂;分析纯;试剂盒-Elisa试剂盒;通用生化试剂-生物染色剂与化学指示剂;化工原料;其它;bulk reagents |
| Mol文件 | 1733-12-6.mol |
| 结构式 |  |
甲酚红 性质
| 熔点 | 290 °C |
|---|---|
| 沸点 | 479.59°C (rough estimate) |
| 密度 | 0.998 g/cm3 |
| 折射率 | 1.5300 (estimate) |
| 储存条件 | Store at +5°C to +30°C. |
| 溶解度 | 微溶于水；溶于乙醇 |
| 形态 | 粉末 |
| 酸度系数(pKa) | 1.0(at 25℃) |
| 颜色 | 深绿色或棕红色 |
| 酸碱指示剂变色ph值范围 | 7.2(YELLOW)--8.8(PURPLISH RED) |
| PH值 | 7.2～8.8 |
| 水溶解性 | soluble |
| 最大波长(λmax) | 570nm, 367nm, 432nm |
| Merck | 14,2578 |
| BRN | 343399 |
| 主要应用 | Display device, optical sensors, combustion gas detection system, inks, correction fluid, diapers, toothpaste, identifying fresh and stale rice, food storage, determine glucose in dialysis solution, monitor metabolic activity of microorganisms, detect bacterialinfection, psychoactive drugs, dental impression material |
| InChIKey | ASMGMVUGPNODGX-UHFFFAOYSA-N |
| EPA化学物质信息 | Cresol Red (1733-12-6) |
化学性质
带绿色光泽的晶体，磨碎后为红棕色粉末。易溶于醇及稀氢氧化钠溶液，微溶于水。用途
酸碱提示剂。用20%乙醇配成0.1%溶液或0.04%水溶液（取0.04g该品溶于1.05ml0.1MNaOH溶液），再稀释至100ml。pH变色范围：7.2（黄）-8.8（紫红）；2.0（红）-3.0（琥珀色）。用途
酸碱指示剂。生产方法
将苯甲磺酸酐、邻甲酚、无水氯化锌混和，搅拌加热，在115-120℃缩合反应约7h，通水蒸气赶净剩余的邻甲酚。过滤，滤饼用热碳酸钠水溶液溶解，过滤，在清亮滤液中加1：1盐酸中和，剧烈搅拌。滤出结晶，用少量水洗涤，干燥，得成品。必要时可用冰醋酸重结晶提纯。安全信息
| 危险品标志 | Xi,Xn,F |
|---|---|
| 危险类别码 | 36/37/38-20/21/22-11 |
| 安全说明 | 24/25-36-26-16 |
| 危险品运输编号 | UN1170 - class 3 - PG 3 - Ethanol, solution |
| WGK Germany | 3 |
| TSCA | Yes |
| 海关编码 | 29349990 |
| 毒性 | A potent lacrimator which is chemically stable and retains its irritancy in water and so can be used in liquid jets in personnel control. In addition to lacrimation, it causes eye pain, blepharospasm, eyelid swelling, irritation of the conjunctiva, a rise in intraocular pressure, and erythema of the skin. Because it can be used in water, its use is less affected by changes in climatic conditions. It is a more potent lacrimator than CS but it is less potent in lethality than CS. |
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