1-Amino-2-Naphthol-4-Sulphonic Acid AR -100g

Uses:

• Colorimetric and spectrophotometric analysis

• Diazo coupling reactions

• Analytical chemistry reagents

• Research and teaching laboratories

Key Features

• Analytical Reagent (AR) grade for high accuracy and reproducibility

• Suitable for sensitive colorimetric determinations

• Consistent particle quality and chemical purity

• Reliable performance in diazo and coupling reactions

• Ideal for laboratory and research applications

1. Identification:

• Product Name: 1-Amino-2-Naphthol-4-Sulphonic Acid AR
• Synonyms: Tobias acid, 2-Naphthylamine-4-sulfonic acid
• Chemical Formula: C₁₀H₉NO₄S
• CAS Number: 81-16-3
• Intended Use: Laboratory chemicals, research and development

2. Hazard Identification:

• GHS Classification:
  • Acute toxicity, Oral (Category 4)
  • Skin irritation (Category 2)
  • Eye irritation (Category 2A)
• GHS Label Elements:
  • Signal Word: Warning
  • Hazard Statements:
    • H302: Harmful if swallowed.
    • H315: Causes skin irritation.
    • H319: Causes serious eye irritation.
• Precautionary Statements:
  • P264: Wash hands thoroughly after handling.
  • P280: Wear protective gloves/protective clothing/eye protection/face protection.
  • P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
  • P302+P352: IF ON SKIN: Wash with plenty of soap and water.
  • P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.

3. Composition/Information on Ingredients:

• Chemical Name: 1-Amino-2-Naphthol-4-Sulphonic Acid
  • CAS Number: 81-16-3
  • Content: ≥98% (AR grade)

4. First-Aid Measures:

• Inhalation: Move the person to fresh air. If not breathing, give artificial respiration. Get medical attention.
• Skin Contact: Wash off with soap and plenty of water. Get medical attention if irritation develops and persists.
• Eye Contact: Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
• Ingestion: Rinse mouth with water. Seek medical advice immediately.

5. Fire-Fighting Measures:

• Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide.
• Special Protective Equipment: Wear self-contained breathing apparatus for firefighting if necessary.
• Hazards from Combustion Products: Carbon oxides, Nitrogen oxides (NOx), Sulfur oxides

6. Accidental Release Measures:

• Personal Precautions: Use personal protective equipment. Avoid breathing dust. Ensure adequate ventilation.
• Environmental Precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
• Methods for Clean-up: Sweep up and shovel. Keep in suitable, closed containers for disposal.

7. Handling and Storage:

• Handling: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use in a well-ventilated area.
• Storage: Store in a cool, dry, and well-ventilated place. Keep container tightly closed.

8. Exposure Controls/Personal Protection:

• Engineering Controls: Use fume hood or other means of local exhaust ventilation.
• Personal Protective Equipment (PPE):
  • Eye Protection: Safety glasses with side-shields
  • Skin Protection: Gloves (nitrile or neoprene recommended)
  • Respiratory Protection: If necessary, use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) cartridges as a backup to engineering controls.
  • Hygiene Measures: Handle in accordance with good industrial hygiene and safety practice

Stability and Reactivity:

• Chemical Stability: Stable under recommended storage conditions.
• Possibility of Hazardous Reactions: No data available.
• Conditions to Avoid: Heat, flames, sparks
• Incompatible Materials: Strong oxidizing agents
• Hazardous Decomposition Products: Carbon oxides, Nitrogen oxides (NOx), Sulfur oxides