Pyrogallic Acid is a white or nearly white needle-or leaf-shaped crystals or crystalline powder. It is mainly used in the production of developer, inhibitor and infrared photographic thermal sensitive agent, and is also used as an intermediate in medicine and dyes.
ITEMS | SPECIFICATIONS | ||
Industrial Grade | CP Grade (chemically pure) | AR Level (analytic pure) | |
Appearance | white powder | white powder | white powder |
content | ≥99.00% | ≥99.50% | ≥99.80% |
Water Solubility | clear and transparent | clear and transparent | clear and transparent |
Melting Point | 131-135℃ | 132-135℃ | 132-135℃ |
Residue on Ignition | ≤0.025% | ≤0.02% | ≤0.02% |
Chloride | ≤0.002% | ≤0.001% | ≤0.001% |
Sulfate | ≤0.005% | ≤0.005% | ≤0.005% |
Heavy metal | ≤5.0 ppm | ≤5.0 ppm | ≤5.0 ppm |
Packaging and storage:
1. Packed in cardboard drums, net weight 25 kg per drum.
2. Avoid moisture and light, sealed tightly, no contact with metal.
Application:
Pyrogallic Acid is widely used in chemical reagents and chemicals, pharmaceutical intermediates, fine chemicals, new photosensitive materials, food preservation, textile printing and dyeing, light industrial daily chemicals, color printing and plate making, microelectronics industry, rare metal analysis, gas analysis, photo development.
It can also be used for the analysis and determination of oxygen, antimony, bismuth, cerium, iron, molybdenum, tantalum and niobium.