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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
4-methylbenzene-1-sulfonic acid

Inventory

EC number:
203-180-0
EC name:
Toluene-4-sulphonic acid
CAS number:
104-15-4
CAS number:
104-15-4
Synonyms
Names:
4-Methylbenzenesulfonic acid monohydrate
Benzenesulfonic acid, 4-methyl-
P-Toluenesulfonic acid monohydrate
PARA-TOLUENESULPHONIC ACID
Identifier:
CAS number
6192-52-5
Identifier:
IUPAC name
4-methylbenzene-1-sulfonic acid hydrate
Identifier:
IUPAC name
4-methylbenzenesulfonic acid
Identifier:
IUPAC name
4-methylbenzenesulfonic acid hydrate
Identifier:
other: InChl
1/C7H8O3S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3,(H,8,9,10)
Identifier:
other: Molecular formula
C6H8O3S
Identifier:
other: Molecular formula
C7H8O3
Identifier:
other: Molecular formula
C7H8O3S*H2O
Identifier:
other: SMILES notation
CC1=CC=C(C=C1)S(=O)(=O)O.O
Identifier:
other: Molecular formula
CH3C6H4SO3H · H2O
Identifier:
other: InChl
InChI=1/C7H8O3S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3,(H,8,9,10)
Identifier:
other: InChl
InChI=1S/C7H8O3S.H2O/c1-6-2-4-7(5-3-6)11(8,9)10;/h2-5H,1H3,(H,8,9,10);1H2
Identifier:
other: SMILES notation
O=S(=O)(O)c1ccc(cc1)C
4-methylbenzene-1-sulfonic acid

Molecular and structural information

Molecular formula:
C7H8O3S
Molecular weight:
172.2
SMILES notation:
Cc1ccc(cc1)S(=O)(=O)O
InChl:
JOXIMZWYDAKGHI-UHFFFAOYSA-N
Structural formula:
Chemical structure

Related substances

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Identifier:
CAS number
Identity:
6192-52-5
Identifier:
CAS number
Identity:
104-15-4
Identifier:
EC number
Identity:
203-180-0
Identifier:
IUPAC name
Identity:
4-methylbenzene-1-sulfonic acid
Identifier:
EC name
Identity:
Toluene-4-sulphonic acid
Identity:
p-Toluenesulfonic acid