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

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

neutral