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LC5526 Toluene-4-sulfonic acid monohydrate
for analysis ACS


Order number Packaging Quantity Price €
AC32526 Plastic bottle 100 g 12.78
AC32526 Plastic bottle 500 g 45.00


Product information
Grade ACS
Synonyms p-toluenesulfonic acid
Hill Formula C7H8O3S * H2O
Chemical formula CH3C6H4SO3H * H2O
HS Code 2904 10 00
EC number 203-180-0
Molar mass 190.22 g/mol
EC index number 016-030-00-2
CAS number 6192-52-5


Chemical and physical data
Ignition temperature 600 °C
Solubility 670 g/l (20 °C)
Melting point 56 °C Elimination of water of crystallisation
Molar mass 190.22 g/mol
Density 0.5 g/cm3
Bulk density 510 kg/m3
pH value 1 (650 g/l, H2O, 20 °C) (anhydrous substance)
Boiling point 140 °C (27 hPa)
Vapor pressure (20 °C)
Flash point 180 °C


Safety information according to GHS
Hazard Statement(s) H319: Causes serious eye irritation.
H315: Causes skin irritation.
H335: May cause respiratory irritation.
Precautionary Statement(s) P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
Signal Word Warning
RTECS DB7164000
Storage class 8 A Combustible substances, corrosive
WGK WGK 1 slightly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Safety information
R Phrase R 36/37/38
Irritating to eyes, respiratory system and skin.
S Phrase S 26-37
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves.
Categories of danger irritant
Hazard Symbol Irritant


Transport information
Declaration (transport by sea) IMDG-Code UN 2585 ARYLSULPHONIC ACIDS, SOLID, 8, III, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 2585 ARYLSULPHONIC ACIDS, SOLID, 8, III


Toxicological data
LD 50 oral LD50 rat 2570 mg/kg


Assay (acidimetric, calc. on anhydrous substance) ≥ 99.0 %
Identity passes test
Appearance of solution conforms
Sulphate (SO4) ≤ 0.3 %
Heavy metals (as Pb) ≤ 0.001 %
Fe (Iron) ≤ 0.01 %
Na (Sodium) ≤ 0.002 %
TLC-Test passes test
Sulfated ash ≤ 0.1 %
Water (according to Karl Fischer) 9.5 – 11.5 %
Identity (IR) passes test