- Appearance: Yellow crystalline powder
- Purity (HPLC): ≥97.0%
- Melting Point: 134–139 °C
- Moisture (K.F.): ≤0.5%
- Residue on Ignition: ≤0.1%
- Single Impurity (HPLC): ≤1.0%
- Heavy Metals (Pb): ≤10 ppm
Applications
CAS 2069-71-8 is a key aromatic amine intermediate widely used in dyestuffs, pigments, organic synthesis, and electronic materials. As a dye intermediate, it undergoes diazotization and coupling reactions to synthesize azo dyes, acid dyes, and reactive dyes for textiles, printing inks, and leather, offering bright yellow-to-red shades with excellent light fastness and thermal stability. In organic synthesis, it serves as a building block for pharmaceuticals, agrochemicals, and functional materials, leveraging its reactive amino and nitro groups for derivatization. In electronic materials, it is used in organic semiconductors, piezoelectric materials, and optical filters due to its strong visible-light absorption and charge-transport properties. It also acts as a colorant additive in plastics, coatings, and paper, providing high tinting strength and weather resistance.
Safety Information
Classified as GHS07 (Xi, Irritant); hazard statements H315, H319, H335.
- Inhalation: Dust irritates respiratory tract (cough, sore throat); use local exhaust and dust mask.
- Skin Contact: Causes irritation (redness, itching); wear nitrile gloves, wash skin with soap and water.
- Eye Contact: Causes severe irritation (stinging, tearing); wear safety goggles, rinse eyes with water for ≥15 minutes.
- Ingestion: May cause nausea/vomiting; do not induce vomiting, seek medical aid.
- Chemical Hazards: Stable under normal conditions; avoid strong oxidants, strong acids, and high temperatures (>200 °C), which may trigger decomposition or toxic fume release.
- Storage: Keep in cool, dry, well-ventilated area in tightly sealed containers; separate from incompatible substances.
- Disposal: Dispose of waste per local hazardous waste regulations; avoid environmental release.
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