Phthalic anhydride pure [85-44-9]
Phthalic anhydride is used for the production of plasticizers and fillers for polymers and dyes. As a result of condensation with phenol, it forms phenolphthalein, used as an acid-base indicator. An important application is the production of anthraquinone and its derivatives.
Aroma: slightly aromatic
Melting point: 129 – 132 ° C
Boiling point: 285 ° C
Auto-ignition temperature: 580 ° C
Flash point: 151 ° C
lower: 1.7% vol.
upper: 10,4% vol.
Vapor pressure: 0.01
Density: (20 ° C): 1.527 g / cm3.
Bulk weight: 500 – 700 kg / m3
in water: 6 g / l (20 ° C)
in organic solvents: ethanol, diethyl ether, formic acid
Labels for 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.
– corrosivity, the pictogram exclamation mark should not be added if it concerns eye or skin irritation.
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Source: GHS pictograms