Phthalic Anhydride (PA/Phthalic Acid Anhydride)

Phthalic anhydride is an organic compound, C8H4O3, which is a circular anhydride formed by the dehydration of phthalic acid molecules. Phthalic anhydride is a white solid, it is an important raw material in the chemical industry, especially used in plasticizer manufacture. HS code for PA is 2917350000.

Features of Phthalic Anhydride (PA)

Hypotoxic

The danger of combustion in case of high heat, open flame, or contact with an oxidizer

The eighth category of dangerous goods

Phthalic Anhydride Properties

Phthalic Anhydride Cas Number (Cas No.)	85-44-9
Phthalic Anhydride UN Number	2214
Phthalic Anhydride Molecular Formula	C8H4O3
Phthalic Anhydride Formula Structure
Phthalic Anhydride Molecular Weight
Phthalic Anhydride IUPAC Name	2-benzofuran-1,3-dione
Phthalic Anhydride Synonyms	Phthalic Acid Anhydride
Phthalic Anhydride Density At
Phthalic Anhydride Boiling Point	284℃
Phthalic Anhydride Melting Point

FAQs of Phthalic Anhydride/Phthalic Acid Anhydride

What is phthalic anhydride made from?

Phthalic Anhydride is made from phthalates or naphthalene.

What is phthalic anhydride used for?

It is widely used in the production of plasticizers and pigments. It can also be used as a scorch retarder, light stabilizer and heat stabilizer.

Is phthalic anhydride dangerous?

If exposed to phthalic anhydride, it may cause acute irritation to personnel, including irritation to eyes, respiratory tract and skin, but no permanent damage has been observed.

Which process reaction does formation of phthalic anhydride take place by?

There are three ways of the phthalic anhydride production process: Ortho-xylene process, naphthaline process and mixing process.

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