| Identification | More | [Name]
2-Methyl-5-nitrobenzenesulfonic acid | [CAS]
121-03-9 | [Synonyms]
2-METHYL-5-NITROBENZENESULFONIC ACID
4-NITRO-2-TOLUENESULFONIC ACID
4-NITROTOLUENE-2-SULFONIC ACID
LABOTEST-BB LT00052933
PARANITROTOLUENE SULFONIC ACID
P-NITROTOLUENE SULFONIC ACID
PNTOS
2-Methyl-5-nitrobenzenesalfonicacid
2-methyl-5-nitro-benzenesulfonicaci
2-toluenesulfonicacid,5-nitro
4-Nitro-o-toluenesulfonicacid
4-nitrotoluene-2-sulphonicacid
5-nitro-2-methylbenzenesulfonicacid
5-nitro-o-toluenesulfonicaci
5-nitro-o-toluenesulfonicacid
Benzenesulfonicacid,2-methyl-5-nitro-
kyselina4-nitrotoluen-2-sulfonova
kyselina4-nitrotoluen-2-sulfonova(czech)
p-nitrotoluene-o-sulfonicacid
PARANITRO TOLUVIN ORTHO SULPHONIC ACID (P.N.T.O.S.A.) | [EINECS(EC#)]
204-445-3 | [Molecular Formula]
C7H7NO5S | [MDL Number]
MFCD00024914 | [Molecular Weight]
217.2 | [MOL File]
121-03-9.mol |
| Chemical Properties | Back Directory | [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) | [form ]
Solid | [pka]
-1.14±0.33(Predicted) | [color ]
Very Dark Brown | [Water Solubility ]
667g/L at 23℃ | [InChI]
InChI=1S/C7H7NO5S/c1-5-2-3-6(8(9)10)4-7(5)14(11,12)13/h2-4H,1H3,(H,11,12,13) | [InChIKey]
ZDTXQHVBLWYPHS-UHFFFAOYSA-N | [SMILES]
C1(S(O)(=O)=O)=CC([N+]([O-])=O)=CC=C1C | [CAS DataBase Reference]
121-03-9(CAS DataBase Reference) | [EPA Substance Registry System]
121-03-9(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R34:Causes burns.
R41:Risk of serious damage to eyes. | [Safety Statements ]
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 . | [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. |
| Hazard Information | Back Directory | [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. | [Production Methods]
4-Nitrotoluene is sulfonated with 25 % oleum at 60 ℃ and worked up to give a solution of the sodium salt of 2-Methyl-5-nitrobenzenesulfonic acid. | [Flammability and Explosibility]
Nonflammable |
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