CAUSTIC SODA FLAKENo.PARAMETERSRESULT01NaOH99.23%02Na2CO30.58%03NaCl0.024%04SiO20.0011%05Na2SO40.0036%06Al2O316 mg/Kg07Fe20 mg/Kg08Heavy Metals0.5 mg/Kg09Insoluble in water0%