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Toluene

Toluene is primarily used in the manufacture of chemicals, drugs, explosives, food flavoring and sweetening agents, paints and resins.

TOLUENE CONFORMS TO IS 537:1967(REAFFIRMED 2000) SPECIFICATIONS FOR
TOLUENE, PURE NITRATION GRADE.

Sr. No.

Characteristics

Test Method appendix

Test method various Indian standards

Requirement

i)

Colour

-

5 of IS:82-1950**

Not darker than a freshly prepared solution of 0.1 N potassium dichromate & 12 ml. of 0.1N Cobalt sulphate made up to 1000 ml. with water

ii)

Specify gravity* at

  1. 15/15 c
  2. 27/27 c

-

6.3.3 of IS:82-1950**

0.870 to 0.874
0.859 to 0.863

iii)

Distillation Range:

-

IS:5298-1969***(See note)

The difference between the temperature (running points) at which 1 and 96 percent of the volume taken have been collected shall not exceed 0.6 c when a sample is tested by standard method. This range shall include the temperature of 110.6 c

iv)

Residue on evaporation, mg/ 100 ml. max.

-

9 of IS:82-1950**

5

v)

Total sulphur, % by weight, max.

Determination of total sulphur as given in annex C of the standard

--

0.1

vi)

Hydrogen sulphide

Determination of hydrogen sulphide as given in annex D of the standard

-

To pass test

vii)

Mercaptans

-

P:19(Doctor test) of IS:1448 (1960)***

Shall give no position reaction.

*When the material is required with especially low content of non-sulphonable hydrocarbon sp. Gr. At 27/27 c shall not be lower than 0.859.
**Method of test for thinners and solvents for paints.
***Method for determination of distillation range and of distillation of yield.
Note
Thermometer conforming to the following essential specifications shall be used.
Range:98 152 c
Subdivision: 0.2 c
Immersion:100 mm.

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