Name | 4-nitrotoluene-2-sulphonic acid |
Synonyms | 5-nitro-o-toluenesulfonicaci 2-toluenesulfonicacid,5-nitro 4-Nitro-o-toluenesulfonicacid 5-nitro-o-toluenesulfonicacid 4-nitrotoluene-2-sulphonicacid 4-Nitrotoluene-2-sulfonic acid 4-nitrotoluene-2-sulphonic acid 2-Methyl-5-nitrobenzenesalfonicacid 2-methyl-5-nitro-benzenesulfonicaci 5-nitro-2-methylbenzenesulfonicacid 2-methyl-4-nitrobenzenesulfonic acid 2-Methyl-5-nitrobenzenesulfonic acid |
CAS | 121-03-9 |
EINECS | 204-445-3 |
InChI | InChI=1/C7H7NO5S/c1-5-4-6(8(9)10)2-3-7(5)14(11,12)13/h2-4H,1H3,(H,11,12,13) |
Molecular Formula | C7H7NO5S |
Molar Mass | 217.2 |
Density | 1.6040 (rough estimate) |
Melting Point | 135°C |
Boling Point | 500°C (rough estimate) |
Water Solubility | 667g/L at 23℃ |
Solubility | Methanol (Slightly), Water (Slightly) |
Vapor Presure | 0Pa at 20℃ |
Appearance | White crystal |
Color | Very Dark Brown |
pKa | -1.14±0.33(Predicted) |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.6100 (estimate) |
MDL | MFCD00024914 |
Physical and Chemical Properties | Trait plate-like crystals (recrystallized from water). melting point 133.5 ℃ solubility: soluble in ethanol, ether, chloroform. |
Use | As an intermediate of stilbene-based direct dyes |
Hazard Symbols | Xn - Harmful |
Risk Codes | R34 - Causes burns R41 - Risk of serious damage to eyes R43 - May cause sensitization by skin contact R36 - Irritating to the eyes R22 - Harmful if swallowed |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S39 - Wear eye / face protection. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | 3261 |
RTECS | DB7175000 |
Hazard Class | 8 |
Packing Group | III |