Bromination of Saturated and Unsaturated Hydrocarbons
Dehydration of Sugar by Sulfuric Acid
Organic Synthesis With Familiar Materials
Oxidation of Primary, Secondary, Tertiary Alcohols
Underwater Fireworks: Chlorination of Acetylene
Differences in Miscibility of Organic Alcohols With Increasing Chain Length
Combustion of Cellulose Nitrate (Guncotton)
Different Smells of Carvone Isomers
Distinguishing Between HD and LD Polyethylene
Enviro-bond: Cleaning Oil Spills
Esterification Using a Dean-Stark Trap
IR Demonstration I – Atomic Coupling
IR Demonstration II – Molecular Vibrations
IR Demonstration III – Molecular Vibrations
Making a Rubber Ball from Latex
Reaction Intermediates in Organic Chemistry
Reducing Sugars and Fehling’s Solution
Rod Climbing by a Polymer Solution
Superabsorbent Polyacrylate Gel
Aniline Hydrochloride-Formaldehyde Polymer
Relative Reactivity of Reducing Agents
Electrophilic Aromatic Substitution Reaction/ EAS Reaction
Reactivity of Alkanes vs Aromatic Compounds
Optical Activity of Racemic Mixtures With Limonene
Relationship of Absorbed Light to Observed Color
Density and Miscibility of Liquids
Extraction of Copper Ions from Solution with Orform®
Gel Formation with Sodium Alginate and Calcium Chloride
Hydrolysis of T-Butyl Chloride: A Lecture and Lab Experiment
Aniline Hydrochloride-Formaldehyde Polymer
Description: Solutions of aniline hydrochloride and formaldehyde, when mixed, solidify within seconds to a red, rubbery mass accompanied by a temperature rise of about 40° C. This demonstration is performed in a hood.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1983 Vol: 1 Page: 225
Keywords: Polymers, Aniline, Formaldehyde, Plastics
Rating: 
Hazard: High
- Acute toxicity hazard – oral, dermal, inhalation
- Flammability hazard
- Serious eye damage
- Carcinogenicity hazard
- Short and long term aquatic hazard
- Mutagenicity hazard
- Skin corrosion hazard
- Inhalation hazard
- Specific organ target toxicity – eyes, blood, respiratory system
Effectiveness: Good
- Results are clearly observable without guidance
- Time to result is low
- Good connection from demo to course material
- Effects are engaging
Difficulty: High
- Multi-step procedure
- Reaction using toxic compounds
- Use of flammable reagents
- Some sequential manipulations
Safety Precautions:
- Eye protection required
- Gloves required
- Lab coat required
- Use of downdraft hood required
- Absorbent material on hand
- Not to be performed in discussion room
- ABC fire extinguisher on hand
- Thermal gloves recommended
- Prevent release of reagents to the environment
Class: Organic Chemistry, Polymers
Division: General Chemistry, Organic Chemistry
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