alizarin carmine
Noun 1. A type of synthetic red dye: Alizarin carmine is a specific class of synthetic, acidic dye compounds. It is derived from or related to alizarin, the original red dye obtained from the madder plant, but produced artificially. Its primary historical and industrial use was to color wool a bright, scarlet red shade.
- This term is highly technical and is primarily used in the contexts of industrial dyeing, textile chemistry, and historical pigment analysis.
- It refers to the substance itself (the dye powder or liquid), not the action of dyeing or the resulting color in a general sense.
- Example: "The 19th-century textile sample was analyzed and found to contain alizarin carmine, confirming its post-madder production date."
- "To achieve the vibrant hue in the uniform, the manufacturers used alizarin carmine."
- "Under the microscope, alizarin carmine can be distinguished from natural madder lake by its crystalline structure."
- "The recipe called for a mordant and a specific quantity of alizarin carmine."
- In biological staining (histology), a closely related compound called "Alizarin Red S" is used to stain calcium deposits (e.g., in bone or tissue sections). It is critical to note that while related, "Alizarin Red S" is a distinct modern compound used for a different purpose and is not typically referred to as "alizarin carmine" in scientific literature.
- Alizarin (noun): The parent compound, originally a natural red dye from the madder root (), later synthesized. Alizarin carmine is a modified, sulfonated form of alizarin to make it more soluble and suitable as an acid dye for wool.
- Acid dye (noun): The broader class of dyes to which alizarin carmine belongs. These dyes are characterized by their acidic nature and are typically used for dyeing protein fibers like wool and silk.
- Scarlet (noun/adjective): The intense, bright red color for which this dye was famously used.
- Alizarin Red (in a broad, non-technical historical context)
- Synthetic alizarin dye
- Acid Alizarin Red
The term "alizarin carmine" specifically denotes the acid dye variant used for textile dyeing. It should not be confused with: 1. Alizarin Crimson, which is typically a pigment used in artists' paints (often a lake pigment made by precipitating the dye onto a substrate like alumina). 2. The general color "carmine", which usually refers to a different red dye derived from cochineal insects. Its definition is precise and tied to its chemical function as an acid dye for wool.
- any of various acid dyes; used for dyeing wool scarlet red