Coal tar solvent

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Hydrocarbon class of coal tar solvents includes: benzene, cyclohexane, toluene, methylcyclohexane, xylenes, isopropylhexane, Decalin, Tetralin, metylnaphthalenes, isopropylbenzene, dimethylnaphthalenes, amylnaphthalenes, and mixtures of these compounds. They include solvents having bioling pounts as low as 800C and those distilling well above 3000C.

           

Table 1: Quality specifications of Solvent Type A

Coal Tar Solvent Type A
Property Specifications Assay result
 Appearance

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

 Dencity at 200C, g/m3  0.8600 - 0.8750  0.8750

Temperature range for distillation 90% (vol.) is distilled starting from the initial boiling point within the temperature range 0C

 120 - 160  160
 Volatility by xylene, max  1.8  1.8
 Color of sulphuric acid, unit of the reference solutions scale, max
 Phenol, %, by mass, max  0.010  0.010
 Total Sulphur, %, by mass, max 0.10  0.10 
 Reaction (acidity) of the aqueous extract  neutral  neutral 
 Closed cup flash point, 0C  n/a  n/a

         

Table 2: Quality specifications of Solvent Type B

Coal Tar Solvent Type B
Property Specifications Assay result
Appearance

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

 Dencity at 200C, g/m3  0.8600 - 0.8800  0.8800

Temperature range for distillation 90% (vol.) is distilled starting from the initial boiling point within the temperature range 0C

 120 - 170  170
 Volatility by xylene, max  2.0  2.0
 Color of sulphuric acid, unit of the reference solutions scale, max  n/a  n/a
 Phenol, %, by mass, max  0.020  0.020
 Total Sulphur, %, by mass, max 0.15  0.15 
 Reaction (acidity) of the aqueous extract  neutral  neutral 
 Closed cup flash point, 0C  n/a  n/a

 

Table 3: Quality specifications of Solvent Type C

Coal Tar Solvent Type C
Property Specifications Assay result
Appearance

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

Clear liquid from colorless to pale yellow, free of suspended particles (including water droplets)

 Dencity at 200C, g/m3  0.8600 - 0.8950  0.8950

Temperature range for distillation 90% (vol.) is distilled starting from the initial boiling point within the temperature range 0C

 120 - 180  180
 Volatility by xylene, max  2.0  2.0
 Color of sulphuric acid, unit of the reference solutions scale, max  n/a  n/a
 Phenol, %, by mass, max  0.100  0.100
 Total Sulphur, %, by mass, max 0.30  0.30 
 Reaction (acidity) of the aqueous extract  neutral  neutral 
 Closed cup flash point, 0C  n/a  n/a