Items | Standards |
Characters | White crystal or crystalline Powder/white powder |
Identification:IR-Spectrum | Complies |
Melting point of Salicylic acid | 158.0 -161.0℃ |
Loss on drying | 0.50%max |
Residue on ignition | 0.05%max |
Chloride | 0.01%max |
Sulfate | 0.02%max |
Heavy metals | 20ppm max |
phenol | 0.02%max |
4-Hydroxyisophthalic acid | 0.05%max |
4-Hydroxybenzoic acid | 0.10%max |
Other impurities | 0.05%max |
Total impurities | 0.20%max |
purity | 99.5-101.0% |
Particel size distribution | 90% min. pass 80 mesh 10% max. is less than 80 mesh |