p-Toluenesulfonic acid
Properties
- Molecular formula
- C7H8O3S
- Molar mass
- 172.20 g/mol
- Exact mass
- 172.0194 Da
- Density
- 1.24 g/mL
- Melting point
- 106–107 °C
- Boiling point
- 140 °C (at 20 Torr)
- pKa
- -1.34
- Flash point
- 183.9 °C (closed cup)
- Water solubility
- 670 g/L (25 °C)
- logP
- 1.24Crippen estimate
- Polar surface area
- 54.4 Ų
- H-bond donors / acceptors
- 1 / 2
- Rotatable bonds
- 1
Hazards
Warning
- H315 Causes skin irritationSkin corrosion/irritation
- H319 Causes serious eye irritationSerious eye damage/eye irritation
- H335 May cause respiratory irritationSpecific target organ toxicity, single exposure; Respiratory tract irritation
Harmonised EU classification (CLP Annex VI, index 016-030-00-2), via PubChem.
Precautionary statements
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Identifiers
CAS number
104-15-4SMILES
Cc1ccc(S(=O)(=O)O)cc1InChIKey
JOXIMZWYDAKGHI-UHFFFAOYSA-NInChI
InChI=1S/C7H8O3S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3,(H,8,9,10)Weigh it out
Type any one amount. The others follow from the molar mass and density.
Names and synonyms
37 names · show all
- Benzenesulfonic acid, 4-methyl-
- 4-Methylbenzenesulfonic acid
- p-Methylbenzenesulfonic acid
- Tosic acid
- p-Methylphenylsulfonic acid
- Toluenesulfonic acid
- p-Tolylsulfonic acid
- 4-Toluenesulfonic acid
- K-Cure 1040
- Cyzac 4040
- Nacure 1040
- PTS 100
- NSC 167068
- NSC 2167
- KC 1040
- Dryer 900
- TSA 95
- Cat 51-53
- Taycatox 300
- C 250
- AD 3302W
- Methylbenzenesulfonic acid
- 4-Methylbenzene-1-sulfonic acid
- Activator 100T3
- Cycat 4040
- KCG 3553
- 4-Methyl-benzensulfonic acid
- p-Tsoh
- PTS-M 7000
- TsOH
- Cycat 602
- Aktivator 100 SR
- Taycacure AC 700
- Neocat C 4
- Benzene, 1-methyl-4-(sulfosulfonyl)-
- 1-Methyl-4-(sulfosulfonyl)benzene
- Taycacure AC 707
Work with p-Toluenesulfonic acid
Stereoisomers, salts and isotopologues
The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.
p-Toluenesulfonic acid monohydrate6192-52-5Hydrate
Sodium p-toluenesulfonate657-84-1Salt
Pyridinium p-toluenesulfonate24057-28-1Salt
Collidinium P-toluenesulfonate59229-09-3Salt
Ferric p-toluenesulfonate77214-82-5Salt
Trump IR134127-48-3Salt
O-Benzylglycine toluene-p-sulphonate1738-76-7Salt
L-Alanine benzyl ester tosylate42854-62-6Salt
Valine benzyl ester 4-toluenesulfonate16652-76-9Salt
1-Cyclohexyl-3-(2-morpholinoethyl)carbodiimide metho-p-toluenesulfonate2491-17-0Salt
1-Cyclohexyl-3-(2-morpholinoethyl)carbodiimide metho-p-toluenesulfonate4641-47-8Salt
L-Aspartic acid dibenzyl ester tosylate2886-33-1Salt
Similar compounds
(1,1'-Biphenyl)-4,4'-disulfonic acid5314-37-463 % similar
4-Hydroxybenzenesulfonic acid98-67-958 % similar
2,5-Dimethylbenzenesulfonic acid609-54-157 % similar
Benzenesulfonic acid98-11-356 % similar
Sulfanilic acid121-57-356 % similar
4-Iodobenzenesulphonic acid13035-63-756 % similar
4-Fluorobenzenesulfonic acid368-88-756 % similar
4-Chlorobenzenesulfonic acid98-66-856 % similar
Tanimoto similarity of circular fingerprints over the whole catalogue.