Bright---Black flake or crystals;
2.PRODUCT SPECIFICATION:
Appearance : Bright --- Black or crystals Hue : Approximate to that of the standard sample Strength : 200% Shade : Bluish Moisture, % : =0.6 Insoluble matters when in the solution of sodium sulfide, % : =0.5 Free sulfur content, % : =0.5 3.
Kg kraft paper bagThe product must be stored in shade, dry & well-ventilated warehouse.
Avoid to be contacted with oxidizing chemicals and combustible organic substances.
Keep it away from direct sunlight, heat, sparks and open flames.
Carefully handle the product and avoid damaging the package.