Список характеристик испытаний на толуол и метод испытаний
Толуол — бесцветная прозрачная жидкость с химической формулой C8H10.. It is one of the isomers of benzene and has an aromatic taste. Toluene is widely used as solvent, raw material and reaction intermediate, often used in the production of plastics, смолы, красители, фармацевтика, и т. д..
Толуол (methylbenzene) is a commonly used organic solvent, which is mainly used in coatings, printing inks, клей, plastics and other industries. Its main properties include physical properties, chemical properties, environmental properties and toxicological properties.
Производительность обнаружения
The following is a table of some important properties of toluene and their testing methods:
| Производительность | Описание | Метод обнаружения |
|---|---|---|
| Относительная плотность | At room temperature, the relative density of toluene is 0.87-0.89 | Determination by gravimetric method |
| Показатель преломления | At room temperature, the refractive index of toluene is 1.496-1.498 | Determination by refractive method |
| Содержание воды | The lower the moisture content, the better the quality of toluene | Determination by water titration |
| Degree of acidity | Excessive acidity can cause toluene to deteriorate | Determination by acid-base titration |
| Oxide oxide | The content of the oxide affects the quality of toluene | Determination by iodometry |
| остаток | High levels of residues can cause toluene to deteriorate | Determination by distillation |
| Степень растворимости | Solubility of toluene with other substances | Determination by gravimetry or gas chromatography |
| Toxicology | Including acute toxicity, chronic toxicity, mutagenicity, carcinogenicity, и т. д. | Animal experiments or in vitro cell experiments |
Список характеристик испытаний на толуол и метод испытаний
These properties can be tested by different experimental methods, such as gravimetry, refractometry, титрование, iodometry, distillation, удельный вес, gas chromatography, animal experiments or in vitro cell experiments. These methods need to carry out strict experimental control to ensure the accuracy and reliability of the detection results.
Метод обнаружения
The main detection methods of toluene include physical detection and chemical detection.
Physical testing includes:
The concentration of toluene in air can be measured by gas chromatograph after air sampling.
Toluene in liquid and solid can be detected by chromatography;
In the workplace, combustible gas detectors and other field detection instruments can be used for rapid detection.
Список характеристик испытаний на толуол и метод испытаний
Chemical testing includes:
Toluene can be separated and purified by extraction, distillation, chromatography and other methods for quality determination.
Toluene in water can be detected by gas chromatography or liquid chromatography.
Мы напоминаем вам: different toluene samples may need to use different detection methods, specific detection methods should be selected according to the actual situation and requirements.