phthalic acid

Thân thiện

A chemist carefully measures phthalic acid in a laboratory.

Definition

1. Noun:
   • A colorless crystalline organic acid: Phthalic acid is a specific chemical compound, an aromatic dicarboxylic acid, with the formula C₆H₄(COOH)₂. It is primarily used as a starting material or intermediate in industrial chemical synthesis.

Usage

• Phthalic acid is used industrially. It is not typically used in everyday conversation but in scientific, industrial, and manufacturing contexts.
• It commonly appears in discussions about the production of other chemicals.

Examples

• Noun:
  • The laboratory synthesized the dye from phthalic acid.
  • Phthalic acid is a key precursor in the manufacture of phthalate plasticizers.
  • The chemical properties of phthalic acid make it suitable for creating certain polymers.

Advanced Usage

• "Phthalic acid derivatives": Refers to compounds chemically derived from phthalic acid, such as its esters (phthalates).
  • The safety of various phthalic acid derivatives is under review.

Variants and Related Words

• Phthalate (noun): An ester or salt of phthalic acid, widely used as plasticizers.
  • Some phthalates are used to make plastics more flexible.
• Phthalic anhydride (noun): The anhydride form of phthalic acid, a major industrial chemical.
  • Phthalic anhydride is produced by the oxidation of ortho-xylene.

Synonyms

• Benzene-1,2-dicarboxylic acid: The systematic IUPAC name for phthalic acid.
• ortho-Phthalic acid: A name specifying the relative position of the carboxyl groups on the benzene ring.

Notes

• Phthalic acid itself is not commonly an end-product in consumer goods but is an important industrial intermediate. Its name is most frequently encountered in compound forms like "phthalates" or in the names of production processes.

Học thuật

Noun

1. a colorless acid used to make dyes and perfumes