Detailed Product Description Dear Sirs,We can supply caustic soda pearl as follow: APPEARANCEWHITE PEARLMETHODGB209-2006ITEMTESTMENTGOODSNaOH99% min99.1Na2CO30.5% max0.5NaCl0.03% max0.008Fe2O30.005% max0.0003Particle size: diameter 0.6--0.8mm. Packing: in 25kg woven bag. Jane Jing TIANJIN RUISTER INTERNATIONAL CO., LTD