P-toluenesulfonic acid 96% [6192-52-5]
P-toluenesulfonic acid is used as an acid catalyst soluble in organic solvents, e.g. in esterification reactions and also for the elimination of the hydroxyl group.
Physical description White, almost white or pale pink crystals
Sulfuric acid ≤ 0.3%
Total acid ≥ 97.0% (C7H8O3S · H2O)
Boiling point: 140 ° C (27 hPa)
Flash point: 180 ° C
Flash point: 600 ° C
Melting point: 56 ° C Elimination of water of crystallisation
PH value: 1 (650 g / l, H₂O, 20 ° C) (anhydrous substance)
Bulk density: 510 kg / m3
Solubility: 750 g / l
Labeling of hazardous chemicals and mixtures that are part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The pictograms recommended by GHS have the shape of a square set on the top. They should contain a black symbol on a white background with a red border.
Priority rules to be observed in connection with the labeling of a substance:
– the skull and crossbones, the exclamation mark pictogram should not be added.
– corrosive effect, the exclamation mark pictogram should not be added if it concerns eye or skin irritation.
– health hazard determining respiratory sensitization, the exclamation mark pictogram should not be added if it concerns skin sensitization or irritation to eyes or skin.
Source: GHS pictograms