... soap, viscose fiber, rayon and others. Product Spec: 96%,99% Using: Widely used in papermaking, synthetic washing and soap, ... etc textile industry, pesticide, dye, rubber and chemical industry. Caustic Soda99% Specification :Name ParameterIndex Classy article first-rate product qualification ... tastes NaOH≥ 99.0 98.5 98.0 NaCO3≤ 0.5 0.8 ...