2-Methyl-5-nitrobenzenesulfonic acid
对硝基甲苯邻磺酸
Also known as: 4-nitrotoluene-2-sulfonic acid, 4-nitrotoluene-2-sulphonic acid, 4-Nitrotoluenesulfonic Acid, 5-nitro-o-toluenesulfonic acid, Benzenesulfonic acid, 2-methyl-5-nitro-, 2-methyl-5-nitrobenzenesulfonato, 5-nitro-2-methylbenzenesulfonic acid, p-nitrotoluene-ortho-sulfonic acid, PNTOS, EINECS 204-445-3, MFCD00024914
- CAS No.
- 121-03-9
- Jingsj CID
- J-1101226-3
- Molecular Formula
- C7H7NO5S
- Chinese Name
- 对硝基甲苯邻磺酸
- Molecular Weight
- 217.199 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | 135°C |
|---|---|
| Boiling Point | 500ºC |
| Density | 1.5±0.1 g/cm3 |
Frequently Asked Questions
What is the CAS number of 2-Methyl-5-nitrobenzenesulfonic acid?
121-03-9
What are the molecular formula and molecular weight of 2-Methyl-5-nitrobenzenesulfonic acid?
C7H7NO5S, molecular weight 217.199 g/mol
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026