Anilium Chloride Extra Pure

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SHORT DESCRIPTION

Anilinium Chloride Extra Pure is a high-purity, white to off-white crystalline salt formed from aniline and hydrochloric acid, commonly used in laboratory chemistry for organic synthesis and analytical applications. It serves as a stable, water-soluble source of the anilinium ion, useful in studies of aromatic amines, protonation reactions, and acid-base equilibria. In synthetic chemistry, it acts as an intermediate in the preparation of dyes, pharmaceuticals, and polymer additives. The extra pure grade ensures minimal impurities, making it suitable for sensitive experimental procedures requiring high precision. It should be stored in a tightly sealed container in a cool, dry place to maintain stability and prevent degradation.

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Category: LABORATORY CHEMICALS Tags: AcidBaseChemistry, AmineHydrochloride, AnalyticalReagent, AniliniumSalt, AromaticAmine, HighPurityReagent, OrganicSynthesis, ProtonatedAniline

Description

USES

Primary Uses

Intermediate in the Synthesis of Dyes and Aromatic Compounds
- Acts as a protected form of aniline, used in the controlled synthesis of azo dyes, quinolines, and other aromatic derivatives.
Reagent in Acid–Base Equilibria and pKa Studies
- An excellent model compound for teaching weak base–strong acid salt behavior and calculating pKa/pKb in buffer systems.
Precursor for Aniline Regeneration
- Easily converted back to aniline (C₆H₅NH₂) via base treatment, useful in stepwise syntheses where temporary protonation is needed.
Demonstration of Aromatic Ammonium Salt Properties
- Ideal for educational labs illustrating protonation of amines, hydrogen bonding, and infrared/NMR spectral changes upon salt formation.
Model Compound in Organic Mechanistic Studies
- Studied for its role in protonation equilibria, electrophilic aromatic substitution, and reaction kinetics in undergraduate and research labs.

Secondary Uses

Starting Material for Anilinium-Based Ionic Liquids
- Occasionally used in research to prepare low-melting salts or ionic liquids for green chemistry and electrochemical studies.
Reagent in Electrochemical and Conductivity Studies
- Useful for studying the conductivity of substituted ammonium salts in various solvents.
Teaching Crystallization and Salt Characterization
- A stable, crystalline compound that demonstrates melting point determination, recrystallization, and elemental analysis.
Source of Weak Acid Cation in Ion Exchange Research
- Studied in ion exchange systems or chromatographic methods for separating aromatic amines.
Control Compound in Aromatic Substitution Pathway Experiments

Used to observe the effect of protonation on nucleophilic and electrophilic behavior in substituted benzenes.

KEY PRODUCT FEATURES

KEY ATTRIBUTES

1. Basic Identification Attributes

Chemical Name: Anilinium Chloride
CAS Number: 3724-65-0
HS Code: 29214200 (Aniline derivatives)
Molecular Formula: C₆H₈ClN
Synonyms:
- Aniline hydrochloride
- Anilinium chloride
- Benzenamine hydrochloride
- Phenylammonium chloride

2. Physical & Chemical Properties

Physical State: Solid (crystalline powder)
Color & Odor: White to pale yellow; slight amine-like odor
Boiling Point: Decomposes before boiling
Melting Point: ~198–203 °C
Density/Specific Gravity: ~1.22 g/cm³
Solubility:
- Water: Freely soluble
- Ethanol: Slightly soluble
pH Level: Acidic in aqueous solution (~pH 3–4)
Vapor Pressure: Negligible (non-volatile solid)
Flash Point: Not applicable (non-flammable)
Autoignition Temperature: Not applicable
Viscosity: Not applicable

3. Safety & Hazard Attributes

Hazard Class (GHS):
- Acute Toxicity – Oral (Category 4)
- Skin Irritation (Category 2)
- Eye Irritation (Category 2A)
NFPA Ratings:
- Health: 2
- Flammability: 0
- Reactivity: 0
Exposure Limits:
- No established OSHA/ACGIH limits for anilinium chloride specifically
- Handle with standard protective lab gear
Reactivity:
- Stable under normal lab conditions
- Incompatible with strong oxidizing agents and strong bases

4. Storage & Handling Attributes

Storage Conditions:
- Store in tightly sealed containers in a cool, dry place
- Protect from light and moisture
Incompatible Materials:
- Oxidizing agents, strong alkalis
Container Type:
- Amber glass or plastic container with desiccant
Shelf Life & Expiration Date:
- ~2–3 years if stored properly
Special Handling Requirements:
- Use gloves, goggles, and dust mask
- Handle under fume hood if heated or used in large amounts

5. Regulatory & Compliance Attributes

Regulatory Status:
- Listed in TSCA and under REACH
- Not commonly regulated for transport in small lab quantities
Transportation Restrictions:
- Not classified as hazardous for transport
Waste Disposal Method:
- Dispose as hazardous organic waste
- Do not pour into drain or mix with oxidizers

6. Environmental & Health Impact

Ecotoxicity:
- Toxic to aquatic organisms in high concentrations
Persistence in Environment:
- May undergo slow degradation
Carcinogenicity/Mutagenicity:
- Not classified, but aniline (parent compound) is a suspected carcinogen
Biodegradability:
- Slowly biodegradable

SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS

Personal Protective Equipment (PPE):
- Wear a lab coat, chemical-resistant gloves (nitrile or neoprene), and safety goggles.
- Use in a fume hood to prevent inhalation of vapors or dust.
Handling:
- Avoid inhalation, ingestion, and contact with skin or eyes.
- Prevent formation of dust and avoid exposure to heat, light, and strong oxidizers.
- Ensure containers are kept tightly closed and handled with non-sparking tools.
Storage:
- Store in a cool, dry, and well-ventilated area.
- Keep container tightly sealed and protected from light and moisture.
- Store away from oxidizing agents, acids, and strong bases.
Hygiene Measures:
- Wash hands thoroughly after handling.
- Do not eat, drink, or smoke in the lab.
- Decontaminate equipment and surfaces after use.

FIRST AID MEASURES

Inhalation:
- Move person to fresh air immediately.
- If breathing is difficult, administer oxygen.
- Seek immediate medical attention—may cause respiratory tract irritation or CNS effects (like dizziness or headache).
Skin Contact:
- Rinse skin with plenty of soap and water.
- Remove contaminated clothing and wash before reuse.
- Seek medical advice—aniline derivatives can be absorbed through skin and affect blood oxygenation.
Eye Contact:
- Rinse cautiously with plenty of water for at least 15 minutes.
- Hold eyelids apart and remove contact lenses if present.
- Seek immediate medical attention—may cause corneal irritation.
Ingestion:
- Rinse mouth thoroughly.
- Do not induce vomiting.
- Give water to dilute if the person is conscious.
- Seek immediate medical attention—anilinium compounds can cause methemoglobinemia, leading to oxygen transport issues.

FIRE FIGHTING MEASURES

Suitable Extinguishing Media:
- Use dry chemicals, CO₂, alcohol-resistant foam, or water spray.
Specific Hazards:
- Not highly flammable, but upon heating or fire may release:
  - Toxic fumes of nitrogen oxides (NOₓ)
  - Hydrogen chloride (HCl)
  - Aniline vapors
Protective Equipment for Firefighters:
- Wear self-contained breathing apparatus (SCBA) and full protective gear.
Firefighting Instructions:
- Use water spray to cool exposed containers.
- Avoid breathing vapors or decomposition products.
- Prevent firefighting runoff from entering drains or watercourses.