Pure 99.8% Phthalic Anhydride PA
CAS No.: 85-44-9
EINECS No.: 201-604-9
Formula: C8H4O3
Purity: 99.5%,99.8%
HS CODE: 29173500.00
Appearance: white flakes or crystalline powder
Usage: applied to plastic plasticizer, paint, coating, pharmaceutical
Packing: 25KG/BAG 25MT/20'FCL
Introduction:
Phthalic anhydride is the organic compound with the formula C8H4O3. This anhydride of
phthalic acid, a colourless solid, is an important industrial chemical, especially for
the large-scale production of plasticizers for plastics. In 2002, approximately 4.6 billion
kilograms were produced.
Specification:
Item | Index |
Top grade | First grade | Qualified product |
Appearance | white scaly or crystalline powder | white scaly or Crystalline powder with slight colors |
molten Chroma(Chroma no. )¡Ü | 20 | 50 | 100 |
thermostable Chroma(Chroma no. )¡Ü | 50 | 150 | - |
Chroma of vitriol(Chroma no. )¡Ü | 60 | 100 | 150 |
crystallization point¡ãC¡Ý | 130.5 | 130.3 | 130.0 |
Purity(mass fraction)%¡Ý | 99.80 | 99.50 | 99.00 |
Free acid(mass fraction)¡Ü % | 0.20 | 0.30 | 0.50 |
Ash(mass fraction)%¡Ü | 0.05 | - | - |
Applications in industry and organic synthesis:
Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is
bifunctional and cheaply available. It undergoes hydrolysis and alcoholysis. Hydrolysis
by hot water forms ortho-phthalic acid. This process is reversible: Phthalic anhydride
re-forms upon heating the acid above 180 ¡ãC.
Package:
Packed in 25Kg knitted plastic bag with inner plastic bag and no danger; keep in cool and
dry place.
20'FCL/16ton with pallet, 20'FCL/20ton without pallet 40'FCL/24ton with pallet, 40'FCL/32
ton without pallet
