Picramic acid CAS: 96-91-3
Dyeing and Pigments 2025-03-02
Chemical Name: Picramic Acid
Synonyms: 2-Amino-4,6-dinitrophenol
CAS No.: 96-91-3
Molecular Formula: C₆H₅N₃O₅
Molecular Weight: 199.12 g/mol
Appearance: Dark red crystals (wet product) / Red to brown moist powder
Quality Specifications
| Parameter | Specification |
|---|---|
| Color | Matches standard |
| Moisture Content | 35.26% |
| Water-Insoluble Matter | ≤0.043% |
| Amino Value (Dry Basis) | ≥85.6% |
| Acid/Alkali Insolubles | ≤0.025% |
Applications
- Dye Intermediate:
- Production of azo dyes and sulfur dyes
- Analytical Chemistry:
- pH indicator (color change at pH 1.3–3.2)
- Specialty Chemicals:
- Corrosion inhibitor in metal treatment
Packaging Options
| Form | Packaging | Net Weight |
|---|---|---|
| Dry Product | HDPE drum with liner | 25 kg/drum |
| Wet Product | HDPE drum (moisture-sealed) | 39 kg/drum |
Storage & Handling
- Storage Conditions:
- Dry, ventilated warehouse (<25°C)
- Relative humidity: <60%
- Safety Precautions:
- Explosive risk – keep away from heat/open flames
- Incompatibilities: Strong oxidizers, heavy metals
Safety Information
| Property | Value/Classification |
|---|---|
| GHS Classification | H201: Explosive; H311+H331: Toxic |
| Flash Point | Non-flammable (but explosive) |
| Recommended PPE | Explosion-proof equipment, chemical gloves |
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