Phthalic anhydride CAS:85-44-9

Name:  Phthalic anhydride

CAS:  85-44-9

Synonyms:   1,2-BENZENEDICARBONIC ACID, ANHYDRIDE
                     1,2-BENZENE DICARBOXYLIC ACID ANHYDRIDE
                     1,3-DIOXOPHTHALAN
                     1,3-DIOXOPHTHALANE
                     1,3-ISOBENZOFURANDIONE
                     1,3-ISOBENZOFURANIDONE
                     AKOS BBS-00004337
                     O-PHTHALIC ANHYDRIDE
                     PHTHALANDIONE
                     PHTHALIC ACID ANHYDRIDE
                     PHTHALIC ANHYDRIDE
                    1,2-Benzenedicarboxylic Anhydride
                    1,2-benzenedicarboxylicanhydride
                    1,3-dihydro-1,3-dioxo-isobenzofura
                    1,3-dihydro-1,3-dioxoisobenzofuran
                    1,3-phthalandion
                    1,3-Phthalandione
                    2-Benzofuran-1,3-dione
                   Anhydrid kyseliny ftalove
                  Anhydride phtalique

Molecular Formula:  C8H4O3

Molecular Weight:  148.12

Appearance:  Phthalic Anhydride is moderately flammable, white solid (flake) or a clear, colorless, mobile liquid (molten) Characteristic, acrid, choking odor

Appearance:  white crystalline solid with choking odour

Melting point:  131-134 °C(lit.)

mp:  131-134 °C(lit.)

Boiling point:  284 °C(lit.)

bp:  284 °C(lit.)

density:  1,53 g/cm3

vapor density:  5.1 (vs air)

vapor pressure:  <0.01 mm Hg ( 20 °C)

refractive index:  1.4500 (estimate)

Fp:  152 °C

storage temp.:  Store at RT.

solubility:   6g/l (slow decomposition)

form:  Flaky Crystals

color:   White

Stability:  Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air.

Odor:  Characteristic choking odor

PH:  2 (6g/l, H2O, 20℃)

PH Range:   2 at 6 g/l at 20 °C

explosive limit:   1.7-10.5%(V)

Water Solubility:  6 g/L (20 ºC)

Sensitive:  Moisture Sensitive

Merck:  14,7372