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AMIDES & IMIDES

AMIDES & IMIDES. Amide. Imide. Sulphanilamide. Urea. Phthalimide. 1 ry amide. 1 ry amide. 2 ry amide. Aromatic. Aromatic. Aliphatic. Solid, granules. Solid, fine powder. Solid, fine powder. White. All characteristic odor. Ignition test:. Inflammable, non luminous, non smoky.

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AMIDES & IMIDES

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  1. AMIDES & IMIDES

  2. Amide Imide Sulphanilamide Urea Phthalimide 1ry amide 1ry amide 2ry amide Aromatic Aromatic Aliphatic

  3. Solid, granules. Solid, fine powder. Solid, fine powder. White All characteristic odor Ignition test: Inflammable, non luminous, non smoky Inflammable, luminous, smoky Melting then solidifying Melting Ammonia odor No change White residue No residue The compound is aliphatic The compounds are aromatic

  4. Soluble In soluble In soluble No change In soluble Soluble with warm .: No effervescence Neutral .: Weak acid ─ • Soluble in Dil. HCl but not ppted by 30% NaOH • - Soluble in 10% NaOH but not ppted by Conc. HCl

  5. No reaction in all Ammonia odor in all No reaction in all Ammonia odor in all No reaction in all No reaction in all No reaction in all No reaction in all

  6. 1. Biuret reaction: few gm urea until melt cooling white residue + 10%NaOH (( to dissolve it drop by drop)) shaking clear solution + 1 or 2 drop CuSO4 ((Cupper sulphate)) Purple color 2. Oxalate formation test: Saturated solution of urea + Oxalic acid solution white ppt of urea oxalate 3. Nitrate formation test: Saturated solution of urea + 2 drops Conc. HNO3(( nitric acid)) white ppt of urea nitrate

  7. Amphoteric character: 2. Azo dye formation test: sulphanilamide + dil.HCl (until dissolve) + 1 drop of NaNO2 (sod. Nitrite solution) until faint pale yellow color (1) {Diazonium salt formed} It is unstable because that we must put it in ice, without ice it will decompose few phenol + 10% NaOH (until phenol dissolved) (2) Add (1) on (2) gradually ((Azo – dye formation)) Orange – red color or ppt

  8. Phthalein test Phthalimide + Phenol + 4 drops Conc. H2SO4 cool pour in 10% NaOH in beaker heat until fussion Pink color 2. Flourescein test Phthalimide + resorcinol + 2-3 drops Conc. H2SO4 cool then pour in 10% NaOH in heat until fussion beaker Green fluorescence + H2O fluorescence

  9. C=O streatching band 1670 – 1640 cm -1 -NH streatching band 3500 – 3100 cm -1 1670 – 1640 cm -1 C=O streatching band 3500 – 3100 cm -1 -NH streatching band > 3000 cm -1 CH aromatic streatching band

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