Description

  Product Description Product name: Sodium hydrosulfite (rongalite) 
Molecular Formula: Na2S2O4 
Quality standard: HG******1 JISK********5 
Exterior /Appearance: White free flowing crystal powder. 
Smell: Flavourless or smell of sulfur dioxide 
Usage: It can be used in the pulp industry, printing and dyeing industry, spinning and weaving industry, and so on. 
Package: Inner line PE/nylon/PE three-layer composite plastic bag, outside bag is composite plastic weaving bag, net weight *5KG. Or up to customer's requirement 
HS Code: *******0 
Specifications: 
Guidelines     *0%         *8%        *5% 
Na2S2O4       ≥*0%       ≥*8%       ≥*5% 
Fe            ≤*0ppm     ≤*0ppm     ≤*0ppm 
Zinc (Zn)     ≤1ppm      ≤1ppm      ≤1ppm 
Other heavy metal 
(With Pb to calculate)≤1ppm      ≤1ppm      ≤1ppm 
Matter which does not dissolve in water ≤0.*5%     ≤0.*5%     ≤0.*5% 
Storage time limit(month) *2      *2         *2