Terephthalic acid Typical Properties
Item
Top grades
First grade
Appearance
White powder
White powder
Acid value /(mgKOH/g)
675±2
675±2
P-Carboxybenzaldehyde/(mg/Kg)
≤25
≤25
p-methylbenzaldehyde /(mg/Kg)
≤150
≤180
Ignition residue/(mg/Kg)
≤6
≤10
Total heavy metal (Mo,Cr, Ni, Co, Mn,Fe )/(mg/Kg)
≤3
≤5
Fe/(mg/Kg)
≤1
≤2
moisture W/%
≤0.2
≤0.2
DMF tinct(5g/100ml)/Hazen unit
≤10
≤10
(Platinum cobalt color number)
b*value
≤1.4
≤1.5
Terephthalic acid Usage
Leather Tanning Industry
Terephthalic acid Packaging and Shipping
25KG/bag
According to customer’s request
Terephthalic acid Storage
Store at room temperature and away from light
