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1、 Product overview
Name | Toluene | CAS： | 108-88-3 |
Synonymous | Methylbenzol | Chinese name | 甲苯 |
Molecular formula | C7H8；CH3C6H5 | Molecular weight | 92.13 |
Melting point | -94.4℃ | Boiling point | 110.6℃ |
Flash point | 4℃ | Density | 0.87 |
Solubility | Insoluble in water, miscible in most organic solvents such as benzene, alcohol and ether | Stable explosion limit | 1.1%-7.1% |
Appearance | Colorless transparent liquid with aromatic smell similar to benzene | Danger marking | 3.2 |
2、 Quality index
Item | Index | |
Ⅰ | Ⅱ | |
Appearance | Transparent liquid, no insoluble water and mechanical impurities | Transparent liquid, no insoluble water and mechanical impurities |
Color (platinum cobalt number) not darker than | 10 | 20 |
Purity (mass fraction) /% not less than | 99.80 | - |
Density（20℃）（Kg/m3） | - | 865 ～868 |
Benzene content (mass fraction)%, no more than | 0.03 | 0.01 |
C8 aromatics content (mass fraction)%, no more than | 0.05 | 0.10 |
Non aromatic content (mass fraction)%, no more than | 0.10 | 0.25 |
Pickling colorimetry | The color of the acid layer is not darker than 1000ml dilute acid, containing 0.2 reconstitutable potassium standard solution | The color of the acid layer is not darker than 1000ml dilute acid, containing 0.2 reconstitutable potassium standard solution |
Total sulfur content not more than | 2 | 2 |
Evaporation residue not more than | 3 | 3 |
Neutral experiment | neutral |
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3、 Purpose:
It is used for blending gasoline composition and as the main raw material for the production of toluene derivatives, explosives, dye intermediates and drugs.
4、 Precautions
Store in a cool and ventilated warehouse. Keep away from kindling and heat sources. The storage temperature should not exceed 30 ℃. Keep the container sealed. It should be stored separately from oxidant and should not be mixed. Explosion proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area shall be equipped with leakage emergency treatment equipment and appropriate receiving materials.
Manufacturing
