Basic information
- Name:
p-Toluenesulfonamide
- CAS No.:
70-55-3
- Molecular Structure:
- Formula:
- C7H9NO2S
- Molecular Weight:
- 171.21
- Synonyms:
- p-Toluenesulfonamide(8CI);4-Methylbenzenesulfonamide;4-Methylphenylsulfonamide;4-Tolylsulfonamide;Benzenesulfonamide,4-methyl-;Plasticizer 15;Toluene-4-sulfonamide;Tolylsulfonamide;Topcizer 1S;Tosylamide;Uniplex 173;p-Methylbenzenesulfonamide;p-Tolylsulfonamide;p-Tosylamide;
- EINECS:
- 200-741-1
- Density:
- 1.271 g/cm3
- Melting Point:
- 134-137 °C(lit.)
- Boiling Point:
- 322.2 °C at 760 mmHg
- Flash Point:
- 148.6 °C
- Solubility:
- 0.32 g/100ml (25 °C) in water
- Appearance:
- White crystalline powder
- Hazard Symbols:
Xn, 
Xi- Risk Codes:
- 36-20/21/22
- Safety Description:
- 26-36 Details
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Chemistry
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IUPAC Name: 4-Methylbenzenesulfonamide
Molecular Formula: C7H9NO2S
Molecular Weight: 171.21 g/mol
SMILES: O=S(=O)(c1ccc(cc1)C)N Copy
InChI: InChI=1/C7H9NO2S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3,(H2,8,9,10)
EINECS: 200-741-1
Classification Code: Drug / Therapeutic Agent; Mutation data
Product Categories: SULFONAMIDE; FINE Chemical & INTERMEDIATES; Organic Building Blocks; Sulfonamides / Sulfinamides; Sulfur Compounds
Melting Point: 134-137 °C(lit.)
Water Solubility: 0.32 g/100 mL (25 °C)
Index of Refraction: 1.564
Molar Refractivity: 43.81 cm3
Molar Volume: 134.6 cm3
Surface Tension: 46.3 dyne/cm
Density: 1.271 g/cm3
Flash Point: 148.6 °C
Enthalpy of Vaporization: 56.4 kJ/mol
Boiling Point: 322.2 °C at 760 mmHg
Vapour Pressure of p-Toluenesulfonamide (CAS NO.70-55-3): 0.000285 mmHg at 25 °C
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 75mg/kg (75mg/kg) | Toxicology and Applied Pharmacology. Vol. 21, Pg. 315, 1972. | |
| guinea pig | LDLo | subcutaneous | 2gm/kg (2000mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: EXCITEMENT BEHAVIORAL: MUSCLE WEAKNESS | Journal of Pharmacology and Experimental Therapeutics. Vol. 14, Pg. 259, 1920. |
| mouse | LD50 | intraperitoneal | 250mg/kg (250mg/kg) | National Technical Information Service. Vol. AD691-490, |
Consensus Reports
Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.
Safety Profile
Poison by ingestion and intraperitoneal routes. Mutation data reported. Used as a fungicide. When heated to decomposition it emits very toxic fumes of NOx and SOx.
Hazard Codes: 
Xi,
Xn
Risk Statements: 36-20/21/22
R36:Irritating to eyes.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
WGK Germany: 1
RTECS: XT5075000
PackingGroup of p-Toluenesulfonamide (CAS NO.70-55-3): III
Specification
p-Toluenesulfonamide (CAS NO.70-55-3), its Synonyms are 4-Toluenesulfonamide ; 4-Methylbenzenesulfonamide ; 4-Toluenesulfonic acid, amide ; Benzenesulfonamide, 4-methyl- ; Toluene-4-sulfonamide ; Toluene-p-sulphonamide ; Tolylsulfonamide ; para-Toluenesulfonamide . It is white crystalline powder.