An organic compound Phthalic anhydride CAS:85-44-9 CAS NO.85-44-9

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Keywords

Phthalic anhydride
85-44-9
Benzene-->Maleic anhydride -->Naphthalene-->1,2-Dimethylbenzene-->Vanadium pentoxide -->Motor benzol-->Lubricating oil-->Technical naphthalene-->Storage sump

Quick Details

ProName: An organic compound Phthalic anhydrid...
CasNo: 85-44-9
Molecular Formula: C8H4O3
Appearance: White solid
Application: Phthalic Anhydride is an organic comp...
DeliveryTime: Shipped in 1-3 working days after pay...
PackAge: as your requirements
Port: china main port
ProductionCapacity: 10000 Metric Ton/Year
Purity: 99%
Storage: Store at RT.
Transportation: as your requirements
LimitNum: 1 Kilogram
Heavy metal: ≤10ppm
Grade: Industrial Grade,Pharma Grade

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Details

Introduction:

CHEMICAL NAME: Phthalic Anhydride 99.5%

Formula: C8H4O3

CAS No.: 85-44-9

F.W.: 148.11

UN NO.: 2214

Phthalic anhydride is a common laboratory chemical, Pthalic anhydride has been shown to be esterified with primary alcohols at room temperature. Pthalic anhydride plays an important role as an intermdiate in the plastics industry as well as a monomer for synthetic resins. It is also a precursor ot many dyes such as phthalein, phtalocyanine, rhodamine, fluorescein, and xanthene. Phthalic anhydride has also been used in the synthesis of primary amines.

Property:

It is a precursor to a variety of reagents useful in organic synthesis. Important derivatives include phthalimide and its many derivatives. Chiral alcohols form half-esters (see above), and these derivatives are often resolvable because they form diastereomeric salts with chiral amines such as brucine. A related ring-opening reaction involves peroxides to give the useful peroxy acid:

C6H4(CO)2O + H2O2 → C6H4(CO3H)CO2H

Applications:

1. Mainly used in the production of plastic plasticizer, alkyd resin, dye, unsaturated resin and some medicine and pesticide.

2. Applications in industry and organic synthesis.

3. Hydrolysis of anhydrides is not typically a reversible process. However, phthalic acid is easily dehydrated to form phthalic anhydride due to the creation of a thermodynamically favorable 5-membered ring.

4. Widely used in industry for the production of certain dyes. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride.

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