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So, Chemistry’s back - and it’s diving into amines, a chapter that feels tricky at first but is actually super scoring once you crack the basics. Whether it’s IUPAC naming, reactions, or preparation methods - we’ve got you covered.
These amines class 12 notes include everything you need: NCERT definitions, flowcharts, short tricks, and exam-based reactions that’ll save you during those night-before-the-exam panic scrolls. These class 12 chemistry amines notes are short, sharp, and sorted.
Too many reactions, not enough time? Don’t worry - this amines class 12 notes PDF download is your scroll-and-revise lifesaver. Whether it’s types, naming, or last-minute prep, this PDF has it all - clean, compact, and exam-ready.
You can use it on your phone, laptop, or even print it out, whatever helps you revise faster. these notes of amines class 12 PDF are perfect when you’re in panic mode but still want full marks.
Amines are just nitrogen compounds that look like ammonia with a small twist – one, two, or all three hydrogen atoms are replaced by carbon chains. That tiny structural change makes them super important in real life. They're found in medicines, dyes, amino acids, and even the stuff that runs your brain.
So no, they’re not just another random organic group in your syllabus. And yeah, this is exactly why your class 12 chemistry amines notes start with this topic - because once you understand what amines really are, everything else in the chapter falls into place.
Amines may sound like just another classification topic in organic chemistry, but once you understand how they’re divided - it becomes very clear and logical. Their type depends on how many carbon groups are attached to nitrogen and whether those groups are chains or rings. Let’s break this down simply, with examples.
Depending on how many carbon groups are bonded to the nitrogen atom, amines are divided into three types:
This classification tells us whether the carbon group bonded to nitrogen is part of a straight chain or a ring.
This classification is the base of the whole chapter. Once you understand the types of amines, everything from naming to reactions will start making sense. That’s why your amines notes class 12 always begin with this.
Naming amines can feel tricky at first, but once you follow the basic IUPAC rules, it becomes simple and systematic. The name depends on the type of amine and the length of the carbon chain attached to the nitrogen. Let’s break it down clearly.
In primary amines, the nitrogen atom is attached to only one alkyl or aryl group. The name is derived by replacing the final “-e” in the parent alkane with “-amine.”
General structure: R–NH₂
Naming rule: Alkane name → remove -e → add -amine
Examples:
When two or three alkyl groups are attached to the nitrogen atom, the smaller alkyl groups are treated as substituents, and the “N-” prefix is used to show their position on nitrogen.
Secondary amine (2°):
Tertiary amine (3°):
In symmetrical amines (same groups), common names are also accepted, but IUPAC prefers systematic naming.
In aromatic amines, the nitrogen is attached directly to an aromatic ring. These compounds are usually named as derivatives of aniline (C₆H₅NH₂), where substituents on the ring are indicated using standard nomenclature.
Examples:
IUPAC naming is essential for recognizing structures, writing chemical reactions, and solving organic questions accurately. That’s why this part is emphasized in every standard textbook and your class 12 amines notes PDF - it builds your base for organic chemistry.
The preparation of amines is an important part of Class 12 organic chemistry. Different methods are used to obtain primary, secondary, and tertiary amines depending on the starting material and reagents used. Let’s go through the major methods systematically.
Each method is predictable and scoring - and that’s why they’re explained clearly in your class 12 chemistry amines notes PDF and often highlighted in CBSE marking schemes too.
Amines are super reactive due to the lone pair on nitrogen, and they behave both as nucleophiles and bases. This section in your amines notes class 12 PDF download covers all the important reactions that NCERT focuses on.
Diazonium salts are super reactive and form azo dyes when combined with phenols or aromatic amines - those bright-colored compounds used in textile dyes.
Once you’ve got their structure and reactions, it’s time to know what amines look like, smell like, dissolve in, and how they behave in real-world conditions. This part of your class 12 amines notes covers all the key physical and chemical properties - the stuff CBSE likes to ask in short-answer and reasoning-based questions.
Amines aren’t just a topic in organic chemistry - they actually show up in real life everywhere, from medicines to dyes. This part of your amines notes PDF covers the most important and practical uses of amines that CBSE expects you to know.
And that’s a wrap on Amines Class 12 Notes - from naming and preparation to properties and uses, it’s all here. No more flipping between guides or trying to decode NCERT lines at midnight.
With this PDF-style breakdown, you’ve now got all the chemistry you need - simplified, sorted, and 100% board-friendly.
Q1. What are the key named reactions of amines in Class 12?
Ans. Hoffmann bromamide, Gabriel synthesis, carbylamine test, and azo coupling - all are covered in your amines class 12 notes PDF and show up often in CBSE exams.
Q2. How can you identify 1°, 2°, and 3° amines in the lab?
Ans. Use Hinsberg’s test — it’s clearly explained in most class 12 amines notes. Primary amines give soluble products, secondary give insoluble ones, and tertiary amines don’t react.
Q3. Why doesn’t aniline take part in Friedel–Crafts reaction?
Ans. Because the –NH₂ group binds with the catalyst and blocks the ring. This concept is often asked in amines notes class 12 reasoning questions.
Q4. What’s the basic strength order of amines in water?
Ans. In general: Secondary > Primary > Tertiary > Ammonia - this trend is part of all standard amines notes PDF summaries.
Q5. How do you convert nitriles to primary amines?
Ans. Reduce them using H₂/Ni or LiAlH₄ - this reaction is listed in your notes of amines class 12 PDF under preparation methods.