Chemistry informtion about Benzenesulfonamide, N-ethyl-2(or 4)-methyl- (CAS NO.8047-99-2) is:
IUPAC Name: N-Ethyl-4-Methylbenzenesulfonamide
Synonyms: AI3-04487 ; AI3-08014 ; CCRIS 6102 ; Ketjenflex 8 ; N-Ethyl-2(or 4)-methylbenzenesulfonamide ; N-Ethyl-o(or p)-toluenesulfonamide ; Santicizer 8 ; Toluene ethylsulfonamide ; N-Ethyl-o(or p)-toluenesulphonamide ; N-Ethyltoluenesulfonamide
Molecular Formula: C₉H₁₃NO₂S
Molecular Weight: 199.27
EINECS: 232-465-2 
Density: 1.153 g/cm³
Flash Point: 141.9 °C
Boiling Point: 311 °C at 760 mmHg
Vapour Pressure: 0.00058 mmHg at 25°C 
Enthalpy of Vaporization: 55.19 kJ/mol
Water Solubility:  <0.01 G/100 ML AT 18 °C
Following is the molecular structure of Benzenesulfonamide, N-ethyl-2(or 4)-methyl- (CAS NO.8047-99-2) is:

 Benzenesulfonamide, N-ethyl-2(or 4)-methyl- (CAS NO.8047-99-2) is dye intermediate to produce acid dye.

Moderately toxic by ingestion. Low toxicity by skin contact. A mild eye irritant. When heated to decomposition it emits toxic vapors of NO_x and SO_x.

 Benzenesulfonamide, N-ethyl-2(or 4)-methyl- (CAS NO.8047-99-2) is a viscous slightly yellow liquid. It is insoluble in water. Also it is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P₂O₅ or SOCl₂ generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).And it is probably combustible.