Appearance White or off-white crystal Assay 98.5%min Free ammonium and salt 2.0% max Water 0.5% max Ash 0.5% max

Appearance Orange powder Strenth 100% Water content ---- Insoluble matterials Through 3# intered glass filter Particle size 80um sive

Appearance Yellow crystalline powder Assay 97%-103% Sulphated ash 0.1% max Loss on drying 0.5% max Acidity 4.5-7.0 Nitrofurfural diacetate 1.0% max

Appearance Colorless, clear liquid Boiling range 124.5-126.5℃ Density 0.702-0.705 Refractive index 1.3966-1.3986 Unsaturated hydrocarbons 0.03% max

Appearance Colorless transparent liquid Assay 99%min Water Pass Unsaturated compound(as Br) 0.03% max Sulfuric acid test Pass Non-volatile matter 0.005% max

Appearance Red brown crystalline powder Assay 99%min Water insoluble 0.005% max Chloride 0.005% max Sulphate 0.005% max