半岛bd体育手机客户端 说明
一般描述
2,3,5-triphenyltetrazolium chloride (TTC) is a dye largely used for enumeration of microbial colonies in solid culture media, being a key component of the dry rehydratable film system used for microbiological analysis of food. This dye is colorless in the oxidized form and red when reduced by microorganisms, due to formation of formazan. Live microorganisms reduce TTC by enzymatic action, forming red color formazan that is kept inside granules in the cells.
应用
2,3,5-triphenyltetrazolium chloride (TTC) is an indicator recommended for the microbiological analysis of food.
分析说明
Assay (perchloric acid titration, calculated on dried substance): ≥ 98 %
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax.(water): 245 - 248 nm
Spec. Absorptivity A 1%/1cm (λmax; 0,01?g/l; water; calculated on dried substance): ≥ 770
TLC-Test: passes test
Loss on drying (70 °C; ≤ 1 hPa): ≤ 0.5 %
Suitability for testing the germinability of seeds: passes test
Suitability for microbiology: passes test
基本信息
| 经验(实验)分子式 | C19H15ClN4 |
| 分子量 | 334.80 |
| Beilstein | 3923356 |
| MDL编号 | MFCD00011963 |
半岛bd体育手机客户端 性质
| 质量水平 | 200 |
| 测定 | ≥98% (calculated on dried substance, perchloric acid titration) |
| 形式 | solid |
| pH值(酸碱度) | 3.7 (20 ℃, 10 g/L in H2O) |
| mp | 243 ℃ (decomposition) |
| 溶解性 | 150 g/L |
| 堆积密度 | 230 kg/m3 |
| application(s) | microbiology |
| 储存温度 | 2-30℃ |
| SMILES string | [Cl-].c1ccc(cc1)-c2nn(-c3ccccc3)[n+](n2)-c4ccccc4 |
| InChI | 1S/C19H15N4.ClH/c1-4-10-16(11-5-1)19-20-22(17-12-6-2-7-13-17)23(21-19)18-14-8-3-9-15-18;/h1-15H;1H/q+1;/p-1 |
| InChI key | PKDBCJSWQUOKDO-UHFFFAOYSA-M |
安全信息
| 象形图 |   |
| 警示用语： | Danger |
| 危险声明 | H228 - H315 - H319 |
| 预防措施声明 | P210 - P240 - P241 - P264 - P302 + P352 - P305 + P351 + P338 |
| 危险分类 | Eye Irrit. 2 - Flam. Sol. 1 - Skin Irrit. 2 |
| 储存分类代码 | 4.1B - Flammable solid hazardous materials |
| WGK | WGK 3 |
Sigma-Aldrich
m.cnreagent.com
