|  | |  |  | 2-Methyl-5-nitrobenzenesulfonic acid Basic information | 
|  |  | 2-Methyl-5-nitrobenzenesulfonic acid Chemical Properties | 
 | Melting point | 135°C |  | Boiling point | 500°C (rough estimate) |  | density | 1.6040 (rough estimate) |  | vapor pressure | 0Pa at 20℃ |  | refractive index | 1.6100 (estimate) |  | storage temp. | Sealed in dry,Room Temperature |  | solubility | Methanol (Slightly), Water (Slightly) |  | pka | -1.14±0.33(Predicted) |  | form | Solid |  | color | Very Dark Brown |  | Water Solubility | 667g/L at 23℃ |  | CAS DataBase Reference | 121-03-9(CAS DataBase Reference) |  | EPA Substance Registry System | Benzenesulfonic acid, 2-methyl-5-nitro- (121-03-9) | 
| Hazard Codes | Xn |  | Risk Statements | 34-41-43-36-22 |  | Safety Statements | 26-36/37/39-39-36/37 |  | RIDADR | 3261 |  | RTECS | DB7175000 |  | HS Code | 2904.99.4700 |  | HazardClass | 8 |  | PackingGroup | III |  | Hazardous Substances Data | 121-03-9(Hazardous Substances Data) |  | Toxicity | rat,LD50,oral,3710mg/kg (3710mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1055, 1986. | 
|  |  | 2-Methyl-5-nitrobenzenesulfonic acid Usage And Synthesis | 
 | Uses | 5-Nitro-o-toluenesulfonic Acid is a precursor to 4,4''-dinitrostilbene-2,2''-disulfonic acid in fluorescent whitener. |  | Definition | ChEBI: The arenesulfonic acid that is toluene-2-sulfonic acid bearing a nitro substituent at C-4. |  | Flammability and Explosibility | Nonflammable | 
|  |  | 2-Methyl-5-nitrobenzenesulfonic acid Preparation Products And Raw materials | 
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