alizarine
/ə'lizərin/ Cách viết khác : (alizarin) /ə'lizərin/
Definition
Noun: * A chemical compound: Alizarine is an orange-red crystalline compound. It is a type of organic compound historically obtained from the root of the madder plant (Rubia tinctorum). It is used primarily as a dye and in the production of pigments.
Usage
Alizarine is used as a specific term in chemistry, textile manufacturing, and art history. * It functions as a countable noun (e.g., the alizarine, an alizarine compound). * It is often used attributively as a modifier (e.g., alizarine dye, alizarine crimson).
Examples
- The chemist synthesized alizarine in the laboratory for her research on natural dyes.
- Alizarine was a crucial colorant for producing Turkey red, a famous and colorfast red dye for textiles.
- Many traditional red pigments, such as alizarine crimson, are based on this compound.
Advanced Usage
- Historical Context: The term is strongly associated with the history of dyeing and the 19th-century chemical industry, following the successful synthetic production of alizarine, which replaced the cultivation of madder plants.
- Technical Use: In chemistry, it is classified as a hydroxyanthraquinone. Its chemical structure allows it to form complexes with metal ions (mordants), resulting in different colors, which is key to its use as a dye.
Variants and Related Words
- Alizarin: The more common modern spelling and form of the word. "Alizarine" and "alizarin" are used interchangeably, though "alizarin" is now standard in scientific contexts.
- Alizarin crimson: A specific, important red pigment used by artists, made from alizarin.
- Madder: The common name for the plant from which natural alizarin was originally extracted.
- Anthraquinone: The broader class of organic compounds to which alizarin belongs.
Synonyms
- 1,2-dihydroxyanthraquinone (Systematic IUPAC chemical name)
- Madder lake (when referring to the historical pigment made from the plant extract)
Related Phrases/Idioms
- None: As a specific technical noun, "alizarine" does not form common idioms or phrasal verbs.
Noun
-
an orange-red crystalline compound used in making red pigments and in dyeing
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