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What is the formula for phthalic anhydride?

What is the formula for phthalic anhydride?

C8H4O3
Phthalic anhydride/Formula

What is the structure of anhydrous phthalic acid?

Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. It has a role as an allergen. It is a cyclic dicarboxylic anhydride and a member of 2-benzofurans. Exposure to phthalic anhydride may occur during its use as a chemical intermediate in the plastics industry.

What is the Iupac name of phthalic anhydride?

Phthalic anhydride

Names
Preferred IUPAC name 2-Benzofuran-1,3-dione
Other names Isobenzofuran-1,3-dione Phthalic anhydride
Identifiers
CAS Number 85-44-9

What is an anhydride in chemistry?

Anhydride, any chemical compound obtained, either in practice or in principle, by the elimination of water from another compound. Examples of inorganic anhydrides are sulfur trioxide, SO3, which is derived from sulfuric acid, and calcium oxide, CaO, derived from calcium hydroxide.

Is phthalic acid a strong acid?

As a weak acid, phthalic acid reacts vigorously with strong bases.

Is terephthalic acid a dicarboxylic acid?

Terephthalic acid is an organic compound with formula C6H4(CO2H)2. This white solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. Several million tonnes are produced annually….Terephthalic acid.

Names
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Properties
Chemical formula C8H6O4

What is the Colour of succinic anhydride?

colorless
This colorless solid is the acid anhydride of succinic acid….Succinic anhydride.

Names
Appearance Colorless crystalline needles
Density 1.23 g/cm3
Melting point 119 to 120 °C (246 to 248 °F; 392 to 393 K)
Boiling point 261 °C (502 °F; 534 K)

Which product is obtained from phthalic acid after dehydration?

Let us write the reaction which is happening and the product formed. This will give us an idea about the least reactive reaction. In the first option, Phthalic acid undergoes dehydration giving Phthalic anhydride, a five-membered cyclic anhydride. The delocalisation is increased with two Carbon atoms.

What is phthalic anhydride used for?

The primary use of phthalic anhydride (PA) is as a chemical intermediate in the production of plasticizers from polyvinyl chloride (PVC). The primary use of phthalic anhydride (PA) is as a chemical intermediate in the production of plastics from vinyl chloride.

What is amide formula?

6.9 Amides The simplest amides are derivatives of ammonia (NH3) in which one hydrogen atom has been replaced by an acyl group. Closely related and even more numerous are amides derived from primary amines (R′NH2) with the formula RC(O)NHR′.

Which is the chemical formula for phthalic anhydride?

PubChem CID 6811 Structure Find Similar Structures Chemical Safety Laboratory Chemical Safety Summary (LCSS Molecular Formula C8H4O3or C6H4(CO)2O Synonyms PHTHALIC ANHYDRIDE 85-44-9 Isobenzofuran

What is the odor threshold for phthalic anhydride?

(6,8) Phthalic anhydride has an odor threshold of 0.053 parts per million (ppm). (7) The chemical formula for phthalic anhydride is CH O , and it has a molecular weight of 148.12 g/mol. , and it has a molecular weight of 148.12 g/ mol.

How is phthalic anhydride prepared from naphthalene?

The naphthalene route (the Gibbs phthalic anhydride process or the Gibbs–Wohg naphthalene oxidation reaction), a process whose use has declined in compared to the o-xylene route, has the following mechanism: Phthalic anhydride can also be prepared from phthalic acid by simple dehydration.

What is the melting point of phthalic acid?

Melting point 64°F Flash point 305°F. Forms a corrosive solution when mixed with water. Used in the manufacture of materials such as artificial resins. Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid.