Aluminium Ammonium Sulphate Ar, Purity : 99.5%

We are offering aluminium ammonium sulphate ar (ammonium alum) alnh4(so4)2.12h2o m.w. 453.32 minimum assay 99.5% maximum limits of impurities: insoluble matter 0.005% reaction not less than ph 3.0 chloride(cl) 0.002% nitrate(no3) 0.001% phosphate(po4) 0.0025% silicate(sio3) 0.002% arsenic(as) 0.00005% copper(cu) 0.0005% iron(fe) 0.0005% lead(pb) 0.0005% potassium(k) 0.05% sodium(na) 0.005% cas no. 7784 - 26 - 1 un no. Nr hs code : 2833 30 10 s : 22 - 24 25 f :