Toluene test performance list and test method
Toluene is a colorless transparent liquid with chemical formula 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, resins, dyes, pharmaceuticals, etc.
Toluene (methylbenzene) is a commonly used organic solvent, which is mainly used in coatings, printing inks, glue, plastics and other industries. Its main properties include physical properties, chemical properties, environmental properties and toxicological properties.
Performance of detection
The following is a table of some important properties of toluene and their testing methods:
| Performance | Description | Method of detection |
|---|---|---|
| Relative density | At room temperature, the relative density of toluene is 0.87-0.89 | Determination by gravimetric method |
| Index of refraction | At room temperature, the refractive index of toluene is 1.496-1.498 | Determination by refractive method |
| Water content | 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 |
| residue | High levels of residues can cause toluene to deteriorate | Determination by distillation |
| Degree of solubility | Solubility of toluene with other substances | Determination by gravimetry or gas chromatography |
| Toxicology | Including acute toxicity, chronic toxicity, mutagenicity, carcinogenicity, etc | Animal experiments or in vitro cell experiments |
Toluene test performance list and test method
These properties can be tested by different experimental methods, such as gravimetry, refractometry, titration, iodometry, distillation, specific gravity, 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.
Method of detection
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.
Toluene test performance list and test method
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.
We remind you: different toluene samples may need to use different detection methods, specific detection methods should be selected according to the actual situation and requirements.