Appearance:Yellow and light brown
Odor:Sightly smell as acetic acid
Molecular weight: less than 1500,less than 3000,less than5000
Degree of polymerization (DP):2-10
Particle size:≥100 mesh
Residue on ignition：≤1%
Since 2001, Qingdao Longyuntong Corporation has developed to be a leading manufacturer of Azoic Dyes (Naphthol AS series and Bases) with annual output over 8000 MTs. It is the qualified supplier for global pigment manufacturers. It is also a main supplier of other pigment-related intermediates such as Acetoacet Anilide and Phenyl Methyl Pyrazolone series from China.
It provides high-performance organic and inorganic pigments to meet the high demand of industrial and architectural coatings, for the agricultures industry, for the plastics industry, for special applications as well as colorants used in different printing inks.