Dyes, Paints and Pigments — Chapter Summary
Telangana Open School (TOSS) · Class 12 · Chemistry
Summary of Dyes, Paints and Pigments for Telangana Open School (TOSS) Class 12 Chemistry. This chapter explores the chemistry behind dyes, paints.
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Overview
This chapter explores the chemistry behind dyes, paints, and pigments—substances that impart color to various materials. These compounds play a vital role in industries such as textiles, construction, printing, and cosmetics. While dyes are used to color fabrics and other materials by chemical bondi
Key Concepts
Dyes are colored organic compounds
Dyes are colored organic compounds that bind to fabrics. Their color comes from chromophores—groups like -N=N- (azo), -NO₂ (nitro), and quinonoid stru
Dyes are classified by constitution (e
Dyes are classified by constitution (e.g., azo, triphenylmethane) and by application method (e.g., acid, basic, mordant, vat dyes). For example, methy
Pigments are insoluble substances used
Pigments are insoluble substances used to add color to paints, inks, and plastics. They can be inorganic (like TiO₂, ZnO) or organic (like toners). Wh
Paints are mixtures of pigments
Paints are mixtures of pigments, vehicles (drying oils like linseed oil), driers (like cobalt salts), thinners (like turpentine), and additives. Each
Learning Objectives
- Define dyes, paints, and pigments
- Explain the constitution and classification of dyes
- Differentiate between dyes, pigments, and paints
- Classify various types of dyes and pigments
- Describe the process of dyeing and paint formulation
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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