It is mainly used as dyeing aid for wool and nylon, as well as electroplating, adhesive and metal washing.
Indication | Index | |||||
Liquid | Solid | |||||
Qualified | Superior | Qualified | Superior | |||
Content% ≥ | 70.0 | 70.0 | 99.0 | 99.5 | ||
Free acid% ≥ | 62.0 | 62.0 | ---- | ---- | ||
Water insoluble matter% ≤ | 0.01 | 0.01 | 0.01 | 0.01 | ||
Cl% ≤ | 1.0 | 0.001 | 0.001 | 0.0005 | ||
SO4% ≤ | 0.08 | 0.01 | 0.01 | 0.005 | ||
Burning residue% ≤ | ---- | 0.1 | 0.1 | 0.1 | ||
Fe% ≤ | 0.001 | 0.001 | 0.001 | 0.001 | ||
Pt% ≤ | 0.001 | 0.001 | 0.001 | 0.001 | ||
Chroma (platinum cobalt) black ≤ | 20 | 20 | ---- | ---- |