Specifications

1.white or off-white color
2.powder, crystal or granular form
3.less absorb moisture
4.mainly use in agriculture fertilizer

Properties:

White color, easily soluble in water. Aqueous solution appears acid. Insoluble in alcohol, acetone and ammonia. Easily deliquescent in the air.

Application:

1. Mainly use in fertilizer, its advantage is less absorb moisture compared to other fertilizer

 2. also use in industry ,pharmaceuticals, textiles,welding industry,dyeing auxilizries of acid dyes,deliming agent of leather,beer making,chemical agent,

3. making compound fertilizer

Storage:

 Kept in dry and ventilating place, avoid moisture, water, rain and fire. Avoid shipment with acid, alkali class, edible orange mix of chemicals. Common transportation tools.

 Specification: 

Index	Premium grade	First grade	Conforming product
Appearance	White or off-white granule crystal
N content (dry basis)% ≥	21.0	21.0	20.5
Water(H2O)content%≤	0.2	0.3	1.0
Free acid(H2SO4)%≤	0.03	0.05	0.20
(Iron Fe)content%≤	0.007	--	--
Arsenic As)content%≤	0.00005	--	--
Heavy metal(pb)% ≤	0.005	--	--
Insoluble substance in water %≤	0.01	--	--